{"id":1181,"date":"2016-01-29T22:22:16","date_gmt":"2016-01-29T14:22:16","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=1181"},"modified":"2026-08-18T12:58:47","modified_gmt":"2026-08-18T04:58:47","slug":"android%e5%bc%80%e5%8f%91%e7%9a%84%e9%82%a3%e4%ba%9b%e5%9d%91%e5%92%8c%e5%b0%8f%e6%8a%80%e5%b7%a7","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=1181","title":{"rendered":"Android\u5f00\u53d1\u7684\u90a3\u4e9b\u5751\u548c\u5c0f\u6280\u5de7"},"content":{"rendered":"
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\n

Android \u65e5\u5e38\u5f00\u53d1\u91cc\u6709\u4e00\u6279\u53cd\u590d\u8e29\u7684\u5751\uff1aclipToPadding\u3001ListView \u7528 wrap_content\u3001ViewPager \u591a\u70b9\u89e6\u63a7\u3001item \u70b9\u4e0d\u4e2d\u3001getSupportFragmentManager \u548c getChildFragmentManager \u6df7\u7528\u3001ScrollView \u5d4c\u5957\u5217\u8868\u7b49\u3002\u4e0b\u6587\u6309\u6761\u76ee\u5217\u51fa\u95ee\u9898\u3001\u539f\u56e0\u548c\u53ef\u7528\u5199\u6cd5\uff0c\u793a\u4f8b\u4ee3\u7801\u5168\u90e8\u4fdd\u7559\u3002<\/p>\n<\/blockquote>\n

<\/p>\n

\n

1\u3001android:clipToPadding<\/span><\/h2>\n

\u610f\u601d\u662f\u63a7\u4ef6\u7684\u7ed8\u5236\u533a\u57df\u662f\u5426\u5728padding\u91cc\u9762\u3002\u9ed8\u8ba4\u4e3atrue\u3002\u5982\u679c\u4f60\u8bbe\u7f6e\u4e86\u6b64\u5c5e\u6027\u503c\u4e3afalse\uff0c\u5c31\u80fd\u5b9e\u73b0\u4e00\u4e2a\u5728\u5e03\u5c40\u4e0a\u4e8b\u534a\u529f\u966a\u7684\u6548\u679c\u3002\u5148\u770b\u4e00\u4e2a\u6548\u679c\u56fe\u3002<\/p>\n

\u4e0a\u56fe\u4e2d\u7684ListView\u9876\u90e8\u9ed8\u8ba4\u6709\u4e00\u4e2a\u95f4\u8ddd\uff0c\u5411\u4e0a\u6ed1\u52a8\u540e\uff0c\u95f4\u8ddd\u6d88\u5931\uff0c\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n

\u5982\u679c\u4f7f\u7528margin\u6216padding\uff0c\u90fd\u4e0d\u80fd\u5b9e\u73b0\u8fd9\u4e2a\u6548\u679c\u3002\u52a0\u4e00\u4e2aheaderView\u53c8\u663e\u5f97\u5927\u6750\u5c0f\u7528\uff0c\u800c\u4e14\u8fc7\u4e8e\u9ebb\u70e6\u3002\u6b64\u5904\u7684clipToPadding\u914d\u5408paddingTop\u6548\u679c\u5c31\u521a\u521a\u597d\u3002<\/p>\n

\u540c\u6837\uff0c\u8fd8\u6709\u53e6\u5916\u4e00\u4e2a\u5c5e\u6027\u4e5f\u5f88\u795e\u5947\uff1aandroid:clipChildren\uff0c\u5177\u4f53\u8bf7\u53c2\u8003\uff1a\u3010Android\u3011\u795e\u5947\u7684android:clipChildren\u5c5e\u6027<\/a><\/p>\n

\n

2\u3001match_parent\u548cwrap_content<\/span><\/h2>\n

\u6309\u7406\u8bf4\u8fd9\u4e24\u4e2a\u5c5e\u6027\u4e00\u76ee\u4e86\u7136\uff0c\u4e00\u4e2a\u662f\u586b\u5145\u5e03\u5c40\u7a7a\u95f4\u9002\u5e94\u7236\u63a7\u4ef6\uff0c\u4e00\u4e2a\u662f\u9002\u5e94\u81ea\u8eab\u5185\u5bb9\u5927\u5c0f\u3002\u4f46\u5982\u679c\u5728\u5217\u8868\u5982ListView\u4e2d\uff0c\u7528\u9519\u4e86\u95ee\u9898\u5c31\u5927\u4e86\u3002ListView\u4e2d\u7684getView\u65b9\u6cd5\u9700\u8981\u8ba1\u7b97\u5217\u8868\u6761\u76ee\uff0c\u90a3\u5c31\u5fc5\u7136\u9700\u8981\u786e\u5b9aListView\u7684\u9ad8\u5ea6\uff0conMesure\u624d\u80fd\u505a\u6d4b\u91cf\u3002\u5982\u679c\u6307\u5b9a\u4e86wrap_content\uff0c\u5c31\u7b49\u4e8e\u544a\u8bc9\u7cfb\u7edf\uff0c\u5982\u679c\u6211\u6709\u4e00\u4e07\u4e2a\u6761\u76ee\uff0c\u4f60\u90fd\u5e2e\u6211\u8ba1\u7b97\u663e\u793a\u51fa\u6765\uff0c\u7136\u540e\u7cfb\u7edf\u6309\u7167\u4f60\u7684\u8981\u6c42\u5c31new\u4e86\u4e00\u4e07\u4e2a\u5bf9\u8c61\u51fa\u6765\u3002\u90a3\u4f60\u4e0d\u60b2\u5267\u4e86\uff1f\u5148\u770b\u4e00\u4e2a\u56fe\u3002<\/p>\n

\u5047\u8bbe\u73b0\u5728ListView\u67098\u6761\u6570\u636e\uff0cmatch_parent\u9700\u8981new\u51fa7\u4e2a\u5bf9\u8c61\uff0c\u800cwrap_content\u5219\u9700\u89818\u4e2a\u3002\u8fd9\u91cc\u6d89\u53ca\u5230View\u7684\u91cd\u7528\uff0c\u5c31\u4e0d\u591a\u63a2\u8ba8\u4e86\u3002\u6240\u4ee5\u8fd9\u4e24\u4e2a\u5c5e\u6027\u7684\u8bbe\u7f6e\u5c06\u51b3\u5b9agetView\u7684\u8c03\u7528\u6b21\u6570\u3002<\/p>\n

\u7531\u6b64\u518d\u5ef6\u4f38\u51fa\u53e6\u5916\u4e00\u4e2a\u95ee\u9898\uff1agetView\u88ab\u591a\u6b21\u8c03\u7528<\/strong>\u3002<\/p>\n

\u4ec0\u4e48\u53eb\u591a\u6b21\u8c03\u7528\uff1f\u6bd4\u5982position=0\u5b83\u53ef\u80fd\u8c03\u7528\u4e86\u51e0\u6b21\u3002\u770b\u4f3c\u5f88\u8be1\u5f02\u5427\u3002GridView\u548cListView\u90fd\u6709\u53ef\u80fd\u51fa\u73b0\uff0c\u8bf4\u4e0d\u5b9a\u8fd9\u4e2a\u7978\u9996\u5c31\u662fwrap_content\u3002\u8bf4\u5230\u5e95\u662fView\u7684\u5e03\u5c40\u51fa\u73b0\u4e86\u95ee\u9898\u3002\u5982\u679c\u5d4c\u5957\u7684View\u8fc7\u4e8e\u590d\u6742\uff0c\u89e3\u51b3\u65b9\u6848\u53ef\u4ee5\u662f\u901a\u8fc7\u4ee3\u7801\u6d4b\u91cf\u5217\u8868\u6240\u9700\u8981\u7684\u9ad8\u5ea6\uff0c\u6216\u8005\u5728getView\u4e2d\u4f7f\u7528\u4e00\u4e2a\u5c0f\u6280\u5de7\uff1aparent.getChildCount == position<\/p>\n

@<\/span>Override<\/span><\/span>\npublic<\/span> View <\/span>getView<\/span>(<\/span>int<\/span> position<\/span>,<\/span> View <\/span>convertView<\/span>,<\/span> ViewGroup <\/span>parent<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>if<\/span> (<\/span>parent<\/span>.<\/span>getChildCount<\/span>(<\/span>)<\/span> ==<\/span> position<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/span>\/\/ does things here<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n<\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>return<\/span> convertView<\/span>;<\/span><\/span>\n\u00a0\u00a0 <\/span>}<\/span><\/span><\/code><\/pre>\n
\n
3\u3001IllegalArgumentException: pointerIndex out of range<\/span><\/h2>\n
\u51fa\u73b0\u8fd9\u4e2aBug\u7684\u573a\u666f\u8fd8\u662f\u5f88\u65e0\u8bed\u7684\u3002\u4e00\u5f00\u59cb\u6211\u7528ViewPager + PhotoView(\u4e00\u4e2a\u5f00\u6e90\u63a7\u4ef6)\u663e\u793a\u56fe\u7247\uff0c\u5728\u591a\u70b9\u89e6\u63a7\u653e\u5927\u7f29\u5c0f\u65f6\u5c31\u51fa\u73b0\u4e86\u8fd9\u4e2a\u95ee\u9898\u3002\u4e00\u5f00\u59cb\u6211\u6000\u7591\u662fPhotoView\u7684bug\uff0c\u627e\u4e86\u534a\u5929\u65e0\u679c\u3002\u8981\u547d\u7684\u662f\u4e0d\u77e5\u5982\u4f55try\uff0c\u8001\u662fcrash\u3002\u540e\u6765\u624d\u77e5\u9053\u662fandroid\u9057\u7559\u4e0b\u6765\u7684bug\uff0c\u6e90\u7801\u91cc\u6ca1\u5bf9pointer index\u505a\u68c0\u67e5\u3002\u6539\u6e90\u7801\u91cd\u65b0\u7f16\u8bd1\u4e0d\u592a\u53ef\u80fd\u5427\u3002\u660e\u77e5\u6709exception\uff0c\u53c8\u4e0d\u80fd\u4ece\u6839\u672c\u4e0a\u89e3\u51b3\uff0c\u5982\u679c\u4e0d\u8ba9\u5b83crash\uff0c\u90a3\u5c31\u53ea\u80fdtry-catch\u4e86\u3002\u89e3\u51b3\u529e\u6cd5\u662f\uff1a\u81ea\u5b9a\u4e49\u4e00\u4e2aViewPager\u5e76\u7ee7\u627fViewPager\u3002\u8bf7\u770b\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n
\/**<\/span><\/span>\n * \u81ea\u5b9a\u4e49\u5c01\u88c5android.support.v4.view.ViewPager\uff0c\u91cd\u5199onInterceptTouchEvent\u4e8b\u4ef6\uff0c\u6355\u83b7\u7cfb\u7edf\u7ea7\u522b\u5f02\u5e38<\/span><\/span>\n *\/<\/span><\/span>\npublic<\/span> class<\/span> CustomViewPager<\/span> extends<\/span> ViewPager<\/span> {<\/span><\/span>\n<\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>public<\/span> CustomViewPager<\/span>(<\/span>Context <\/span>context<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>this<\/span>(<\/span>context<\/span>,<\/span> null<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n<\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>public<\/span> CustomViewPager<\/span>(<\/span>Context <\/span>context<\/span>,<\/span> AttributeSet <\/span>attrs<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>super<\/span>(<\/span>context<\/span>,<\/span> attrs<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n<\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>@<\/span>Override<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>public<\/span> boolean<\/span> onInterceptTouchEvent<\/span>(<\/span>MotionEvent <\/span>ev<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>try<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>return<\/span> super<\/span>.<\/span>onInterceptTouchEvent<\/span>(<\/span>ev<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span> catch<\/span> (<\/span>IllegalArgumentException<\/span> e<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>LogUtil<\/span>.<\/span>e<\/span>(<\/span>e<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span> catch<\/span> (<\/span>ArrayIndexOutOfBoundsException<\/span> e<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>LogUtil<\/span>.<\/span>e<\/span>(<\/span>e<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>return<\/span> false<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n}<\/span><\/span><\/code><\/pre>\n
\u628a\u7528\u5230ViewPager\u7684\u5e03\u5c40\u6587\u4ef6\uff0c\u66ff\u6362\u6210CustomViewPager\u5c31OK\u4e86\u3002<\/p>\n
\n
4\u3001ListView\u4e2ditem\u70b9\u51fb\u4e8b\u4ef6\u65e0\u54cd\u5e94<\/span><\/h2>\n
listView\u7684Item\u70b9\u51fb\u4e8b\u4ef6\u7a81\u7136\u65e0\u54cd\u5e94\uff0c\u95ee\u9898\u4e00\u822c\u662f\u5728listView\u4e2d\u52a0\u5165\u4e86button\u3001checkbox\u7b49\u63a7\u4ef6\u540e\u51fa\u73b0\u7684\u3002\u8fd9\u4e2a\u95ee\u9898\u662f\u805a\u7126\u51b2\u7a81\u9020\u6210\u7684\u3002\u5728android\u91cc\u9762\uff0c\u70b9\u51fb\u5c4f\u5e55\u4e4b\u540e\uff0c\u70b9\u51fb\u4e8b\u4ef6\u4f1a\u6839\u636e\u4f60\u7684\u5e03\u5c40\u6765\u8fdb\u884c\u5206\u914d\u7684\uff0c\u5f53\u4f60\u7684listView\u91cc\u9762\u589e\u52a0\u4e86button\u4e4b\u540e\uff0c\u70b9\u51fb\u4e8b\u4ef6\u7b2c\u4e00\u4f18\u5148\u5206\u914d\u7ed9\u4f60listView\u91cc\u9762\u7684button\u3002\u6240\u4ee5\u4f60\u7684\u70b9\u51fbItem\u5c31\u5931\u6548\u4e86\uff0c\u8fd9\u4e2a\u65f6\u5019\u4f60\u5c31\u8981\u6839\u636e\u4f60\u7684\u9700\u6c42\uff0c\u662f\u7ed9\u4f60\u7684item\u7684\u6700\u5916\u5c42layout\u8bbe\u7f6e\u70b9\u51fb\u4e8b\u4ef6\uff0c\u8fd8\u662f\u7ed9\u4f60\u7684\u67d0\u4e2a\u5e03\u5c40\u5143\u7d20\u6dfb\u52a0\u70b9\u51fb\u4e8b\u4ef6\u4e86\u3002<\/p>\n
\u89e3\u51b3\u529e\u6cd5\uff1a\u5728ListView\u7684\u6839\u63a7\u4ef6\u4e2d\u8bbe\u7f6e\uff08\u82e5\u6839\u63a7\u4ef6\u662fLinearLayout, \u5219\u5728LinearLayout\u4e2d\u52a0\u5165\u4ee5\u4e0b\u5c5e\u6027\u8bbe\u7f6e\uff09descendantFocusability\u5c5e\u6027\u3002<\/p>\n
android<\/span>:<\/span>descendantFocusability<\/span>=<\/span>\"blocksDescendants\"<\/span><\/span><\/code><\/pre>\n
\u5b98\u65b9\u6587\u6863\u4e5f\u662f\u8fd9\u6837\u8bf4\u660e\u3002<\/p>\n
\n
5\u3001getSupportFragmentManager()\u548cgetChildFragmentManager()<\/span><\/h2>\n
\u6709\u4e00\u4e2a\u9700\u6c42\uff0cFragment\u9700\u8981\u5d4c\u59573\u4e2aFragment\u3002\u57fa\u672c\u4e0a\u53ef\u4ee5\u60f3\u5230\u7528ViewPager\u5b9e\u73b0\u3002\u5f00\u59cb\u4ee3\u7801\u662f\u8fd9\u6837\u5199\u7684\uff1a<\/p>\n
mViewPager<\/span>.<\/span>setAdapter<\/span>(<\/span>new<\/span> CustomizeFragmentPagerAdapter<\/span>(<\/span>getActivity<\/span>(<\/span>)<\/span>.<\/span>getSupportFragmentManager<\/span>(<\/span>)<\/span>,<\/span> subFragmentList<\/span>)<\/span>)<\/span>;<\/span><\/span><\/code><\/pre>\n
\u5bfc\u81f4\u7684\u95ee\u9898\u662f\u5d4c\u5957\u7684Fragment\u6709\u65f6\u4f1a\u83ab\u540d\u5176\u5999\u4e0d\u663e\u793a\u3002\u5f00\u59cb\u6839\u672c\u4e0d\u77e5\u9053\u95ee\u9898\u51fa\u73b0\u5728\u54ea\uff0c\u5f53\u4f60\u4e0d\u77e5\u9053\u95ee\u9898\u7684\u539f\u56e0\u65f6\uff0c\u53bb\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u663e\u7136\u6bd4\u8f83\u9ebb\u70e6\u3002\u7ecf\u8fc7\u4e00\u6b21\u53c8\u4e00\u6b21\u7684\u5bfb\u5bfb\u89c5\u89c5\uff0c\u7ec8\u4e8e\u5728stackoverflow\u4e0a\u770b\u5230\u4e86\u540c\u6837\u7684\u63d0\u95ee\u3002\u8bf4\u662f\u7528getChildFragmentManager()\u5c31\u53ef\u4ee5\u4e86\u3002\u771f\u662f\u8fd9\u4e48\u795e\u5947\uff01<\/p>\n
mViewPager<\/span>.<\/span>setAdapter<\/span>(<\/span>new<\/span> CustomizeFragmentPagerAdapter<\/span>(<\/span>getChildFragmentManager<\/span>,<\/span> subFragmentList<\/span>)<\/span>)<\/span>;<\/span><\/span><\/code><\/pre>\n
\u8ba9\u6211\u4eec\u770b\u4e00\u4e0b\u8fd9\u4e24\u4e2a\u6709\u4ec0\u4e48\u533a\u522b\u3002\u9996\u5148\u662fgetSupportFragmentManager\uff08\u6216\u8005getFragmentManager\uff09\u7684\u8bf4\u660e\uff1a<\/p>\n
Return<\/span> the <\/span>FragmentManager <\/span>for<\/span> interacting <\/span>with <\/span>fragments <\/span>associated <\/span>with <\/span>this<\/span> fragment<\/span>'s<\/span> activity<\/span>.<\/span><\/span><\/code><\/pre>\n
\u7136\u540e\u662fgetChildFragmentManager\uff1a<\/p>\n
Return<\/span> a<\/span> private<\/span> FragmentManager <\/span>for<\/span> placing <\/span>and<\/span> managing <\/span>Fragments <\/span>inside <\/span>of <\/span>this<\/span> Fragment<\/span>.<\/span><\/span><\/code><\/pre>\n
Basically, the difference is that Fragment\u2019s now have their own internal FragmentManager that can handle Fragments. The child FragmentManager is the one that handles Fragments contained within only the Fragment that it was added to. The other FragmentManager is contained within the entire Activity.<\/p>\n
\u5df2\u7ecf\u8bf4\u5f97\u6bd4\u8f83\u660e\u767d\u4e86\u3002<\/p>\n
\n
6\u3001ScrollView\u5d4c\u5957ListView<\/span><\/h2>\n
\u8fd9\u6837\u7684\u8bbe\u8ba1\u662f\u4e0d\u662f\u5f88\u5947\u602a\uff1f\u4e24\u4e2a\u540c\u6837\u4f1a\u6eda\u52a8\u7684View\u5c45\u7136\u653e\u5230\u4e86\u4e00\u8d77\uff0c\u800c\u4e14\u8fd8\u662f\u5d4c\u5957\u7684\u5173\u7cfb\u3002\u66fe\u7ecf\u6709\u4e00\u4e2a\u8fd9\u6837\u7684\u9700\u6c42\uff1a\u754c\u9762\u4e00\u5171\u67094\u4e2a\u533a\u57df\u90e8\u5206\uff0c\u5206\u522b\u662f\u516c\u53f8\u57fa\u672c\u4fe1\u606f\uff08logo\u3001\u540d\u79f0\u3001\u6cd5\u4eba\u3001\u5730\u5740\uff09\u3001\u516c\u53f8\u7b80\u4ecb\u3001\u516c\u53f8\u8363\u8a89\u3001\u516c\u53f8\u53e3\u7891\u5217\u8868\u3002\u6bcf\u90e8\u5206\u5185\u5bb9\u90fd\u9700\u8981\u6839\u636e\u5185\u5bb9\u81ea\u9002\u5e94\u9ad8\u5ea6\uff0c\u4e0d\u80fd\u5199\u6b7b\u3002\u9119\u4eba\u9996\u5148\u60f3\u5230\u7684\u4e5f\u662f\u5916\u90e8\u7528\u4e00\u4e2aScrollView\u5305\u56f4\u8d77\u6765\u3002\u7136\u540e\u628a\u8fd94\u90e8\u5206\u5206\u522b\u75284\u4e2a\u81ea\u5b9a\u4e49\u63a7\u4ef6\u5c01\u88c5\u8d77\u6765\u3002\u57fa\u672c\u4fe1\u606f\u548c\u516c\u53f8\u7b80\u4ecb\u6bd4\u8f83\u7b80\u5355\uff0c\u8363\u8a89\u9700\u8981\u7528\u5230RecyclerView\u548cTextView\u7684\u7ec4\u5408\uff0cRecyclerView\uff08\u5f53\u7136\uff0c\u7528GridView\u4e5f\u53ef\u4ee5\uff0c3\u5217\u591a\u884c\u7684\u663e\u793a\uff09\u5b58\u653e\u8363\u8a89\u56fe\u7247\uff0cTextView\u663e\u793a\u8363\u8a89\u540d\u79f0\u3002\u6700\u540e\u4e00\u90e8\u5206\u53e3\u7891\u5217\u8868\u5f53\u7136\u662fListView\u4e86\u3002\u8fd9\u65f6\u5019\uff0c\u95ee\u9898\u5c31\u51fa\u6765\u4e86\u3002\u9700\u8981\u89e3\u51b3ListView\u653e\u5230ScrollView\u4e2d\u7684\u6ed1\u52a8\u95ee\u9898\u548cRecyclerView\u7684\u663e\u793a\u95ee\u9898\uff08\u5982\u679cRecyclerView\u7684\u9ad8\u5ea6\u6ca1\u6cd5\u8ba1\u7b97\uff0c\u4f60\u662f\u770b\u4e0d\u5230\u5185\u5bb9\u7684\uff09\u3002<\/p>\n
\u5f53\u7136\uff0c\u7f51\u4e0a\u5df2\u7ecf\u6709\u7c7b\u4f3c\u7684\u63d0\u95ee\u548c\u89e3\u51b3\u65b9\u6848\u4e86\u3002<\/p>\n
\u7ed9\u4e00\u4e2a\u7f51\u5740\uff1a<\/p>\n
\u56db\u79cd\u65b9\u6848\u89e3\u51b3ScrollView\u5d4c\u5957ListView\u95ee\u9898<\/a><\/p>\n
ListView\u7684\u60c5\u51b5\u8fd8\u6bd4\u8f83\u597d\u89e3\u51b3\uff0c\u4f18\u96c5\u7684\u505a\u6cd5\u65e0\u975e\u5199\u4e00\u4e2a\u7c7b\u7ee7\u627fListView\uff0c\u7136\u540e\u91cd\u5199onMeasure\u65b9\u6cd5\u3002<\/p>\n
@<\/span>Override <\/span>protected<\/span> void<\/span> onMeasure<\/span>(<\/span>int<\/span> widthMeasureSpec<\/span>,<\/span> int<\/span> heightMeasureSpec<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>int<\/span> expandSpec<\/span> =<\/span> MeasureSpec<\/span>.<\/span>makeMeasureSpec<\/span>(<\/span>Integer<\/span>.<\/span>MAX_VALUE<\/span> >><\/span> 2<\/span>,<\/span> MeasureSpec<\/span>.<\/span>AT_MOST<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>super<\/span>.<\/span>onMeasure<\/span>(<\/span>widthMeasureSpec<\/span>,<\/span> expandSpec<\/span>)<\/span>;<\/span><\/span>\n}<\/span><\/span><\/code><\/pre>\n
ListView\u53ef\u4ee5\u91cd\u5199onMeasure\u89e3\u51b3\uff0cRecyclerView\u91cd\u5199\u8fd9\u4e2a\u65b9\u6cd5\u662f\u884c\u4e0d\u901a\u7684\u3002<\/p>\n
\u8bf4\u5230\u5e95\u5176\u5b9e\u8ba1\u7b97\u9ad8\u5ea6\u561b\u3002\u6709\u4e24\u79cd\u65b9\u5f0f\uff0c\u4e00\u79cd\u662f\u52a8\u6001\u8ba1\u7b97RecycleView\uff0c\u7136\u540e\u8bbe\u7f6esetLayoutParams\uff1b\u53e6\u5916\u4e00\u79cd\u8ddfListView\u7684\u89e3\u51b3\u65b9\u5f0f\u7c7b\u4f3c\uff0c\u5b9a\u4e49\u4e00\u4e2a\u7c7b\u7ee7\u627fLinearLayoutManager\u6216GridLayoutManager\uff08\u6ce8\u610f\uff1a\u53ef\u4e0d\u662f\u7ee7\u627fRecyclerView\uff09\uff0c\u91cd\u5199onMeasure\u65b9\u6cd5\uff08\u6b64\u65b9\u6cd5\u6bd4\u8f83\u9ebb\u70e6\uff0c\u6b64\u5904\u4e0d\u8868\uff0c\u4e0b\u6b21\u5199\u4e00\u7bc7\u6587\u7ae0\u518d\u4f5c\u4ecb\u7ecd\uff09\u3002<\/p>\n
\u52a8\u6001\u8ba1\u7b97\u9ad8\u5ea6\u5982\u4e0b\uff1a<\/p>\n
int<\/span> heightPx<\/span> =<\/span> DensityUtil<\/span>.<\/span>dip2px<\/span>(<\/span>getActivity<\/span>(<\/span>)<\/span>,<\/span> (<\/span>imageHeight<\/span> +<\/span> imageRowHeight<\/span>)<\/span> *<\/span> lines<\/span>)<\/span>;<\/span><\/span>\nMarginLayoutParams <\/span>mParams<\/span> =<\/span> new<\/span> MarginLayoutParams<\/span>(<\/span>LayoutParams<\/span>.<\/span>MATCH_PARENT<\/span>,<\/span> heightPx<\/span>)<\/span>;<\/span><\/span>\nmParams<\/span>.<\/span>setMargins<\/span>(<\/span>0<\/span>,<\/span> 0<\/span>,<\/span> 0<\/span>,<\/span> 0<\/span>)<\/span>;<\/span><\/span>\nLinearLayout<\/span>.<\/span>LayoutParams <\/span>lParams<\/span> =<\/span> new<\/span> LinearLayout<\/span>.<\/span>LayoutParams<\/span>(<\/span>mParams<\/span>)<\/span>;<\/span><\/span>\nhonorImageRecyclerView<\/span>.<\/span>setLayoutParams<\/span>(<\/span>lParams<\/span>)<\/span>;<\/span><\/span><\/code><\/pre>\n
\u601d\u8def\u662f\u8fd9\u6837\u7684\uff1a\u670d\u52a1\u7aef\u8fd4\u56de\u8363\u8a89\u56fe\u7247\u540e\uff0c\u7531\u4e8e\u662f3\u5217\u663e\u793a\u7684\u65b9\u5f0f\uff0c\u53ea\u9700\u8981\u8ba1\u7b97\u9700\u8981\u663e\u793a\u51e0\u884c\uff0c\u7136\u540e\u7ed9\u5b9a\u884c\u95f4\u8ddd\u548c\u56fe\u7247\u7684\u9ad8\u5ea6\uff0c\u518d\u8bbe\u7f6esetLayoutParams\u5c31\u884c\u4e86\u3002<\/p>\n
int<\/span> lines<\/span> =<\/span> (<\/span>int<\/span>)<\/span> Math<\/span>.<\/span>ceil<\/span>(<\/span>totalImages<\/span> \/<\/span> 3d<\/span>)<\/span>;<\/span><\/span><\/code><\/pre>\n
\u81f3\u6b64\uff0c\u8fd9\u4e2a\u5947\u602a\u7684\u9700\u6c42\u5f97\u5230\u4e86\u89e3\u51b3\u3002<\/p>\n
\u53ef\u662f\u5728\u6ed1\u52a8\u7684\u65f6\u5019\uff0c\u611f\u89c9\u51fa\u73b0\u5361\u987f\u7684\u73b0\u8c61\u3002\u806a\u660e\u7684\u4f60\u80af\u5b9a\u60f3\u5230\u662f\u6ed1\u52a8\u51b2\u7a81\u4e86\u3002\u5e94\u8be5\u662fScrollView\u7684\u6ed1\u52a8\u5e72\u6270\u5230\u4e86ListView\u7684\u6ed1\u52a8\u3002\u600e\u4e48\u529e\u5462\uff1f\u80fd\u4e0d\u80fd\u7981\u6389ScrollView\u7684\u6ed1\u52a8\uff1f<\/p>\n
\u767e\u5ea6\u4e00\u4e0b\uff0c\u4f60\u80af\u5b9a\u80fd\u641c\u7d22\u5230\u7b54\u6848\u7684\u3002\u5148\u4e0a\u4ee3\u7801\uff1a<\/p>\n
\/**<\/span><\/span>\n * @author Leo<\/span><\/span>\n * <\/span><\/span>\n *\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Created in 2015-9-12<\/span><\/span>\n *\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u62e6\u622aScrollView\u6ed1\u52a8\u4e8b\u4ef6<\/span><\/span>\n *\/<\/span><\/span>\npublic<\/span> class<\/span> CustomScrollView<\/span> extends<\/span> ScrollView<\/span> {<\/span><\/span>\n<\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>private<\/span> int<\/span> downY<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>private<\/span> int<\/span> touchSlop<\/span>;<\/span><\/span>\n<\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>public<\/span> CustomScrollView<\/span>(<\/span>Context <\/span>context<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>this<\/span>(<\/span>context<\/span>,<\/span> null<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n<\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>public<\/span> CustomScrollView<\/span>(<\/span>Context <\/span>context<\/span>,<\/span> AttributeSet <\/span>attrs<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>this<\/span>(<\/span>context<\/span>,<\/span> attrs<\/span>,<\/span> 0<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n<\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>public<\/span> CustomScrollView<\/span>(<\/span>Context <\/span>context<\/span>,<\/span> AttributeSet <\/span>attrs<\/span>,<\/span> int<\/span> defStyleAttr<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>super<\/span>(<\/span>context<\/span>,<\/span> attrs<\/span>,<\/span> defStyleAttr<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>touchSlop<\/span> =<\/span> ViewConfiguration<\/span>.<\/span>get<\/span>(<\/span>context<\/span>)<\/span>.<\/span>getScaledTouchSlop<\/span>(<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n<\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>@<\/span>Override<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>public<\/span> boolean<\/span> onInterceptTouchEvent<\/span>(<\/span>MotionEvent<\/span> e<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>int<\/span> action<\/span> =<\/span> e<\/span>.<\/span>getAction<\/span>(<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>switch<\/span> (<\/span>action<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>case<\/span> MotionEvent<\/span>.<\/span>ACTION_DOWN<\/span>:<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>downY<\/span> =<\/span> (<\/span>int<\/span>)<\/span> e<\/span>.<\/span>getRawY<\/span>(<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>break<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>case<\/span> MotionEvent<\/span>.<\/span>ACTION_MOVE<\/span>:<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>int<\/span> moveY<\/span> =<\/span> (<\/span>int<\/span>)<\/span> e<\/span>.<\/span>getRawY<\/span>(<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>if<\/span> (<\/span>Math<\/span>.<\/span>abs<\/span>(<\/span>moveY<\/span> -<\/span> downY<\/span>)<\/span> ><\/span> touchSlop<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>return<\/span> true<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>return<\/span> super<\/span>.<\/span>onInterceptTouchEvent<\/span>(<\/span>e<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n}<\/span><\/span><\/code><\/pre>\n
\u53ea\u8981\u7406\u89e3\u4e86getScaledTouchSlop()\u8fd9\u4e2a\u65b9\u6cd5\u5c31\u597d\u529e\u4e86\u3002\u8fd9\u4e2a\u65b9\u6cd5\u7684\u6ce8\u91ca\u662f\uff1aDistance in pixels a touch can wander before we think the user is scrolling\u3002\u8bf4\u8fd9\u662f\u4e00\u4e2a\u8ddd\u79bb\uff0c\u8868\u793a\u6ed1\u52a8\u7684\u65f6\u5019\uff0c\u624b\u7684\u79fb\u52a8\u8981\u5927\u4e8e\u8fd9\u4e2a\u8ddd\u79bb\u624d\u5f00\u59cb\u79fb\u52a8\u63a7\u4ef6\uff0c\u5982\u679c\u5c0f\u4e8e\u6b64\u8ddd\u79bb\u5c31\u4e0d\u89e6\u53d1\u79fb\u52a8\u3002<\/p>\n
\u770b\u4f3c\u5f88\u5b8c\u7f8e\u4e86\u3002<\/p>\n
\u4f46\u662f\u8fd8\u6709\u53e6\u5916\u4e00\u4e2a\u95ee\u9898\uff1a\u6211\u6bcf\u6b21\u52a0\u8f7d\u8fd9\u4e2a\u754c\u9762\u82b1\u7684\u65f6\u95f4\u592a\u957f\u4e86\uff0c\u6bcf\u6b21\u7531\u5176\u5b83\u754c\u9762\u542f\u52a8\u8fd9\u4e2a\u754c\u9762\u65f6\uff0c\u90fd\u8981\u5361\u4e0a1~2\u79d2\uff0c\u800c\u4e14\u56e0\u624b\u673a\u6027\u80fd\u65f6\u95f4\u4e0d\u7b49\u3002\u5e76\u4e0d\u662f\u7531\u4e8e\u7f51\u7edc\u8bf7\u6c42\uff0c\u53d6\u6570\u636e\u7531\u5b50\u7ebf\u7a0b\u505a\uff0c\u8ddfUI\u7ebf\u7a0b\u6beb\u65e0\u5173\u7cfb\u3002\u8fd9\u6837\u7684\u4f53\u9a8c\u81ea\u5df1\u770b\u4e86\u90fd\u5f88\u4e0d\u723d\u3002<\/p>\n
\u51e0\u5929\u8fc7\u53bb\u4e86\uff0c\u8fd8\u662f\u90a3\u6837\u3002\u9a6c\u4e0a\u8981\u7ed9\u8001\u677f\u6f14\u793a\u4e86\u3002\u8fd9\u6837\u7684\u4f53\u9a8c\u8981\u88ab\u9a82\u5341\u6b21\u5440\u3002<\/p>\n
\u96be\u9053\u8ddfScrollView\u7684\u5d4c\u5957\u6709\u5173\uff1f<\/p>\n
\u597d\u5427\uff0c\u90a3\u6211\u91cd\u6784\u4ee3\u7801\u3002\u4e0d\u7528ScrollView\u4e86\u3002\u76f4\u63a5\u7528\u4e00\u4e2aListView\uff0c\u7136\u540eadd\u4e00\u4e2aheaderView\u5b58\u653e\u5176\u5b83\u5185\u5bb9\u3002\u56e0\u4e3a\u63a7\u4ef6\u5c01\u88c5\u5f97\u8fd8\u7b97\u597d\uff0c\u6ca1\u6539\u591a\u5c11\u5e03\u5c40\u5c31OK\u4e86\uff0c\u4e00\u8fd0\u884c\uff0c\u6d41\u7545\u987a\u6ed1\uff0c\u4e00\u5207\u8fce\u5203\u800c\u89e3\uff01<\/p>\n
\u672c\u6765\u5c31\u662f\u8fd9\u4e48\u7b80\u5355\u7684\u95ee\u9898\uff0c\u4e3a\u4ec0\u4e48\u975e\u5f97\u7528ScrollView\u5d4c\u5957\u5462\uff1f<\/p>\n
stackoverflow\u65e9\u5c31\u544a\u8bc9\u4f60\u4e86\uff0c\u4e0d\u8981\u8fd9\u6837\u5d4c\u5957\uff01\u4e0d\u8981\u8fd9\u6837\u5d4c\u5957\uff01\u4e0d\u8981\u8fd9\u6837\u5d4c\u5957\uff01\u91cd\u8981\u7684\u4e8b\u60c5\u8bf4\u4e09\u904d\u3002<\/p>\n
\u5f53\u7136\uff0c\u4eceandroid 5.0 Lollipop\u5f00\u59cb\u63d0\u4f9b\u4e86\u4e00\u79cd\u65b0\u7684API\u652f\u6301\u5d4c\u5165\u6ed1\u52a8\uff0c\u6b64\u65f6\uff0c\u8ba9\u50cf\u8fd9\u6837\u7684\u9700\u6c42\u4e5f\u80fd\u5f88\u597d\u5b9e\u73b0\u3002<\/p>\n
\u6b64\u5904\u7ed9\u4e00\u4e2a\u7f51\u5740\uff0c\u5927\u5bb6\u6709\u5174\u8da3\u81ea\u884c\u4e86\u89e3\uff0c\u6b64\u5904\u4e0d\u518d\u8ba8\u8bba\u3002<\/p>\n
Android NestedScrolling \u5b9e\u6218<\/a><\/p>\n
\n
7\u3001EmojiconTextView\u7684setText(null)<\/span><\/h2>\n
\u8fd9\u662f\u5f00\u6e90\u8868\u60c5\u5e93com.rockerhieu.emojicon\u4e2d\u7684TextView\u52a0\u5f3a\u7248\u3002\u76f8\u4fe1\u5f88\u591a\u4eba\u7528\u5230\u8fc7\u8fd9\u4e2a\u5f00\u6e90\u5de5\u5177\u5305\u3002TextView\u7528setText(null)\u5b8c\u5168\u6ca1\u95ee\u9898\u3002\u4f46EmojiconTextView setText(null)\u540e\u5c31\u60b2\u5267\u4e86\uff0c\u76f4\u63a5crash\uff0c\u663e\u793a\u7684\u662fnull pointer\u3002\u5f00\u59cb\u6211\u6000\u7591\u65f6\u8fd9\u4e2aview\u6ca1\u521d\u59cb\u5316\uff0c\u4f46\u5e76\u4e0d\u662f\u3002\u90a3\u5c31\u8c03\u8bd5\u4e00\u4e0b\u5457\u3002<\/p>\n
@<\/span>Override<\/span><\/span>\npublic<\/span> void<\/span> setText<\/span>(<\/span>CharSequence <\/span>text<\/span>,<\/span> BufferType <\/span>type<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>SpannableStringBuilder <\/span>builder<\/span> =<\/span> new<\/span> SpannableStringBuilder<\/span>(<\/span>text<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>EmojiconHandler<\/span>.<\/span>addEmojis<\/span>(<\/span>getContext<\/span>(<\/span>)<\/span>,<\/span> builder<\/span>,<\/span> mEmojiconSize<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>super<\/span>.<\/span>setText<\/span>(<\/span>builder<\/span>,<\/span> type<\/span>)<\/span>;<\/span><\/span>\n}<\/span><\/span><\/code><\/pre>\n
EmojiconTextView\u4e2d\u7684setText\u770b\u6765\u6ca1\u4ec0\u4e48\u95ee\u9898\u3002\u70b9SpannableStringBuilder\u8fdb\u53bb\u770b\u770b\uff0c\u6e90\u7801\u539f\u6765\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n
\/**<\/span><\/span>\n * Create a new SpannableStringBuilder containing a copy of the<\/span><\/span>\n * specified text, including its spans if any.<\/span><\/span>\n *\/<\/span><\/span>\npublic<\/span> SpannableStringBuilder<\/span>(<\/span>CharSequence <\/span>text<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>this<\/span>(<\/span>text<\/span>,<\/span> 0<\/span>,<\/span> text<\/span>.<\/span>length<\/span>(<\/span>)<\/span>)<\/span>;<\/span><\/span>\n}<\/span><\/span><\/code><\/pre>\n
\u597d\u5427\u3002\u95ee\u9898\u5df2\u7ecf\u627e\u5230\u4e86\uff0ctext.length()\uff0c\u4e0d\u7a7a\u6307\u9488\u624d\u602a\u3002<\/p>\n
text<\/span> =<\/span> text<\/span> ==<\/span> null<\/span> ?<\/span> \"\"<\/span> :<\/span> text<\/span>;<\/span><\/span>\nSpannableStringBuilder <\/span>builder<\/span> =<\/span> new<\/span> SpannableStringBuilder<\/span>(<\/span>text<\/span>)<\/span>;<\/span><\/span><\/code><\/pre>\n
\u52a0\u4e00\u884c\u5224\u65ad\u5c31\u884c\u4e86\u3002<\/p>\n
\n
8\u3001cursor.close()<\/span><\/h2>\n
\u4e00\u822c\u6765\u8bf4\uff0cdatabase\u7684\u5f00\u548c\u5173\u4e0d\u592a\u4f1a\u5fd8\u8bb0\uff0c\u4f46\u6e38\u6807\u7684\u4f7f\u7528\u53ef\u80fd\u5e76\u4e0d\u4f1a\u5f15\u8d77\u592a\u591a\u91cd\u89c6\uff0c\u5c24\u5176\u662f\u6e38\u6807\u7684\u968f\u610f\u4f7f\u7528\u3002\u6bd4\u5982\u7528ContentResolver\u7ed3\u5408Cursor\u67e5\u8be2SD\u5361\u4e2d\u56fe\u7247\uff0c\u5f88\u5bb9\u6613\u5199\u51fa\u4ee5\u4e0b\u7684\u4ee3\u7801\uff1a<\/p>\n
Cursor <\/span>cursor<\/span> =<\/span> contentResolver<\/span>.<\/span>query<\/span>(<\/span>uri<\/span>,<\/span> null<\/span>,<\/span> MediaStore<\/span>.<\/span>Images<\/span>.<\/span>Media<\/span>.<\/span>MIME_TYPE<\/span> +<\/span> \"=? or \"<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>+<\/span> MediaStore<\/span>.<\/span>Images<\/span>.<\/span>Media<\/span>.<\/span>MIME_TYPE<\/span> +<\/span> \"=?\"<\/span>,<\/span> new<\/span> String<\/span>[<\/span>]<\/span> {<\/span> \"image\/jpeg\"<\/span>,<\/span> \"image\/png\"<\/span> }<\/span>,<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>MediaStore<\/span>.<\/span>Images<\/span>.<\/span>Media<\/span>.<\/span>DATE_MODIFIED<\/span>)<\/span>;<\/span><\/span>\nwhile<\/span> (<\/span>cursor<\/span>.<\/span>moveToNext<\/span>(<\/span>)<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>\/\/ TODO\u00a0\u00a0\u00a0\u00a0 <\/span><\/span>\n}<\/span><\/span><\/code><\/pre>\n
cursor\u90fd\u4e0d\u505a\u975e\u7a7a\u5224\u65ad\uff0c\u800c\u4e14\u5f80\u5f80\u5728\u5173\u95ed\u6e38\u6807\u7684\u65f6\u5019\u4e0d\u6ce8\u610f\u6709\u53ef\u80fd\u5f02\u5e38\u629b\u51fa\u3002<\/p>\n
\u4ee5\u524d\u5728\u9879\u76ee\u4e2d\uff0c\u7ecf\u5e38\u51fa\u73b0\u7531\u4e8e\u6e38\u6807\u6ca1\u53ca\u65f6\u5173\u95ed\u6216\u5173\u95ed\u51fa\u5f02\u5e38\u6ca1\u5904\u7406\u597d\u5bfc\u81f4\u5176\u5b83\u7684\u95ee\u9898\u4ea7\u751f\uff0c\u800c\u4e14\u95ee\u9898\u770b\u8d77\u6765\u975e\u5e38\u7684\u8be1\u5f02\uff0c\u4e0d\u597d\u89e3\u51b3\u3002\u540e\u6765\uff0c\u6211\u628a\u6574\u4e2a\u9879\u76ee\u4e2d\u6709\u5173\u6e38\u6807\u7684\u4f7f\u7528\u91cd\u6784\u4e00\u904d\uff0c\u540e\u6765\u5c31\u518d\u6ca1\u53d1\u751f\u8fc7\u7c7b\u4f3c\u7684\u95ee\u9898\u3002<\/p>\n
\u539f\u5219\u5f88\u7b80\u5355\uff0c\u6240\u6709Cursor\u7684\u58f0\u660e\u4e3a\uff1a<\/p>\n
Cursor <\/span>cursor<\/span> =<\/span> null<\/span>;<\/span><\/span><\/code><\/pre>\n
\u4e14\u653e\u5728try-catch\u5916\u9762\uff1b\u9700\u8981\u7528\u5230cursor\uff0c\u5148\u505a\u975e\u7a7a\u5224\u65ad\u3002\u7136\u540e\u5728\u65b9\u6cd5\u7684\u6700\u540e\u7528\u4e00\u4e2a\u5de5\u5177\u7c7b\u5904\u7406\u6e38\u6807\u7684\u5173\u95ed\u3002<\/p>\n
\/**<\/span><\/span>\n * @author Leo<\/span><\/span>\n * <\/span><\/span>\n *\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Created in 2015-9-15<\/span><\/span>\n *\/<\/span><\/span>\npublic<\/span> class<\/span> IOUtil<\/span> {<\/span><\/span>\n<\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>private<\/span> IOUtil<\/span>(<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n<\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>public<\/span> static<\/span> void<\/span> closeQuietly<\/span>(<\/span>Closeable <\/span>closeable<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>if<\/span> (<\/span>closeable<\/span> !=<\/span> null<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>try<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>closeable<\/span>.<\/span>close<\/span>(<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span> catch<\/span> (<\/span>Throwable<\/span> e<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n<\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>public<\/span> static<\/span> void<\/span> closeQuietly<\/span>(<\/span>Cursor <\/span>cursor<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>if<\/span> (<\/span>cursor<\/span> !=<\/span> null<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>try<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>cursor<\/span>.<\/span>close<\/span>(<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span> catch<\/span> (<\/span>Throwable<\/span> e<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n}<\/span><\/span><\/code><\/pre>\n
\u6211\u60f3\uff0c\u8fd9\u6837\u5c31\u6ca1\u5fc5\u8981\u5728\u6bcf\u4e2a\u5730\u65b9\u90fdtry-catch-finally\u4e86\u3002<\/p>\n
\n
9\u3001java.lang.String cannot be converted to JSONObject<\/span><\/h2>\n
\u89e3\u6790\u670d\u52a1\u7aef\u8fd4\u56de\u7684JSON\u5b57\u7b26\u4e32\u65f6\uff0c\u5c45\u7136\u629b\u51fa\u4e86\u8fd9\u4e2a\u5f02\u5e38\u3002\u8c03\u8bd5\u6ca1\u53d1\u73b0\u4efb\u4f55\u95ee\u9898\uff0c\u770b\u8d77\u6765\u662f\u6b63\u5e38\u7684JSON\u683c\u5f0f\u3002\u540e\u6765\u53d1\u73b0\u5c45\u7136\u662fJSON\u4e32\u591a\u4e86BOM\uff08Byte Order Mark\uff09\u3002\u670d\u52a1\u7aef\u7684\u4ee3\u7801\u7531PHP\u5b9e\u73b0\uff0c\u6709\u65f6\u5f00\u53d1\u4e3a\u4e86\u4fee\u6539\u65b9\u4fbf\uff0c\u76f4\u63a5\u7528windows\u8bb0\u4e8b\u672c\u6253\u5f00\u4fdd\u5b58\uff0c\u5f15\u5165\u4e86\u4eba\u773c\u770b\u4e0d\u5230\u7684\u95ee\u9898\u3002\u5176\u5b9e\u5c31\u662f\u591a\u4e86\u201dufeff\u201d\u8fd9\u4e2a\u73a9\u610f\uff0c\u5ba2\u6237\u7aef\u4ee3\u7801\u8fc7\u6ee4\u4e00\u4e0b\u5c31\u884c\u4e86\u3002<\/p>\n
\/\/ in case: Value of type java.lang.String cannot be converted to JSONObject<\/span><\/span>\n\/\/ Remove the BOM header<\/span><\/span>\nif<\/span> (<\/span>jsonStr<\/span> !=<\/span> null<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>jsonStr<\/span> =<\/span> jsonStr<\/span>.<\/span>trim<\/span>(<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>if<\/span> (<\/span>jsonStr<\/span>.<\/span>startsWith<\/span>(<\/span>\"ufeff\"<\/span>)<\/span>)<\/span> {<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/span>jsonStr<\/span> =<\/span> jsonStr<\/span>.<\/span>substring<\/span>(<\/span>1<\/span>)<\/span>;<\/span><\/span>\n\u00a0\u00a0\u00a0\u00a0<\/span>}<\/span><\/span>\n}<\/span><\/span><\/code><\/pre>\n
\n
10\u3001Shape round rect too large to be rendered into a texture<\/span><\/h2>\n
\u5706\u5f62\u77e9\u5f62\u592a\u5927\uff1f<\/p>\n
\u4e00\u5f00\u59cb\u6211\u53d1\u73b0\u4e00\u4e2aacitivity\u4e2d\u7684scrollView\u6ed1\u52a8\u4e00\u987f\u4e00\u987f\u7684\uff0c\u800c\u5b9e\u9645\u4e0a\u6ca1\u6709\u5d4c\u5957\u4efb\u4f55\u7684\u5217\u8868\u63a7\u4ef6\u5982ListView\u3001GridView\uff0c\u5305\u542b\u7684\u65e0\u975e\u662f\u4e00\u4e9bTextView\u3001ImagView\u7b49\u3002\u770b\u4e86\u4e0bEclipse\u4e2dlog\u8f93\u51fa\uff0c\u53d1\u73b0\u51fa\u73b0\u4e86\u8fd9\u4e2awarn\u7ea7\u522b\u7684\u63d0\u793a\u3002\u96be\u9053\u662f\u6211\u5728\u5916\u5c42\u5d4c\u5957\u4e86\u8fd9\u4e2a\u5706\u5f62\u77e9\u5f62\uff1f\u6211\u5728\u5f88\u591a\u5730\u65b9\u90fd\u7528\u4e86\u5440\uff0c\u4e3a\u4f55\u5c31\u8fd9\u4e2a\u754c\u9762\u51fa\u73b0\u95ee\u9898\u4e86\uff1f<\/p>\n
\u540e\u6765\u624d\u53d1\u73b0\uff0c\u8fd9\u4e2a\u5706\u5f62\u77e9\u5f62\u5305\u542b\u7684\u5185\u5bb9\u592a\u591a\u4e86\uff0c\u5df2\u7ecf\u8d85\u51fa\u4e86\u624b\u673a\u7684\u9ad8\u5ea6\uff0c\u800c\u4e14\u53ef\u4ee5\u6ed1\u597d\u51e0\u9875\u3002<\/p>\n
StackOverFlow\u4e0a\u6709\u4eba\u8bf4\uff1aThe easiest solution is to get rid of the rounded corners. If you remove the rounded corners and use a simple rectangle, the hardware renderer will no longer create a single large texture for the background layer, and won\u2019t run into the texture size limit any more.<\/p>\n
\u4e5f\u6709\u5efa\u8bae\uff1ato draw onto the canvas.<\/p>\n
\u5177\u4f53\u94fe\u63a5\uff1aHow Do Solve Shape round rect too large to be rendered into a texture<\/a><\/p>\n
\u6211\u8bd5\u4e86\u4e0b\u81ea\u5b9a\u4e49\u63a7\u4ef6LinearLayout\uff0c\u901a\u8fc7canvas\u8fdb\u884cdraw\uff0c\u6ca1\u80fd\u89e3\u51b3\u3002\u53bb\u6389radius\u5c5e\u6027\u786e\u5b9e\u53ef\u884c\uff0c\u53ef\u6211\u60f3\u4fdd\u7559\u600e\u4e48\u529e\uff1f<\/p>\n
\u8fd8\u6709\u4e00\u4e2a\u89e3\u51b3\u529e\u6cd5\uff0c\u901a\u8fc7\u5728androidManifest.xml\u4e2d\u7981\u7528\u786c\u4ef6\u52a0\u901f\uff0c\u4e3a\u4e86\u63a7\u5236\u7c92\u5ea6\uff0c\u6211\u53ea\u5728\u6b64activity\u4e2d\u7981\u7528\u6b64\u529f\u80fd\u3002<\/p>\n
<<\/span>activity <\/span>android<\/span>:<\/span>hardwareaccelerated<\/span>=<\/span>\"false\"<\/span>\/<\/span>><\/span><\/span><\/code><\/pre>\n
\u5148\u60f3\u5230\u8fd9\u4e48\u591a\uff0c\u4ee5\u540e\u518d\u8865\u5145\u3002<\/p>\n
\u53c2\u8003\uff1a<\/p>\n
HowTo: ListView, Adapter, getView and different list items\u2019 layouts in one ListView<\/a><\/p>\n
android ListView \u5728\u521d\u59cb\u5316\u65f6\u591a\u6b21\u8c03\u7528getView()\u539f\u56e0\u5206\u6790<\/a><\/p>\n
java.lang.IllegalArgumentException: pointerIndex out of range Exception \u2013 dispatchTouchEvent<\/a><\/p>\n
What is difference between getSupportFragmentManager() and getChildFragmentManager()?<\/a><\/p>\n
\u539f\u6587\u51fa\u5904\uff1a LeoLiang<\/a><\/p>\n
\n
\u4e00\u53e5\u8bdd\u603b\u7ed3\uff1a\u5e03\u5c40\u5c5e\u6027\u548c\u5217\u8868\u590d\u7528\u5148\u5bf9\u9f50\uff0c\u518d\u5904\u7406\u89e6\u6478\u3001Fragment \u5c42\u7ea7\u548c\u5d4c\u5957\u6eda\u52a8\uff1b\u786c\u4ef6\u52a0\u901f\u3001Cursor \u548c JSON \u89e3\u6790\u8fd9\u4e9b\u8fb9\u89d2\u4e5f\u8981\u5355\u72ec\u515c\u4f4f\u3002<\/strong><\/p>\n<\/blockquote>\n<\/section>\n","protected":false},"excerpt":{"rendered":"
Android \u65e5\u5e38\u5f00\u53d1\u91cc\u6709\u4e00\u6279\u53cd\u590d\u8e29\u7684\u5751\uff1aclipToPadding\u3001ListView \u7528 wrap_con […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[45],"tags":[],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1181"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1181"}],"version-history":[{"count":3,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1181\/revisions"}],"predecessor-version":[{"id":2157,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/1181\/revisions\/2157"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
android:clipToPadding\u548candroid:clipChildren<\/a><\/p>\n
ListView inside ScrollView is not scrolling on Android<\/a><\/p>\n