{"id":985,"date":"2015-08-18T17:40:56","date_gmt":"2015-08-18T09:40:56","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=985"},"modified":"2026-08-18T12:58:44","modified_gmt":"2026-08-18T04:58:44","slug":"fragment%e6%a0%88","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=985","title":{"rendered":"Fragment\u6808"},"content":{"rendered":"
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Activity \u6709\u4efb\u52a1\u6808\uff0cFragment \u4e5f\u6709\u56de\u9000\u6808\u3002\u628a Fragment addToBackStack<\/code> \u4e4b\u540e\u70b9\u8fd4\u56de\uff0c\u5c31\u80fd\u56de\u5230\u4e0a\u4e00\u4e2a Fragment\u3002\u4e0b\u9762\u5bf9\u7167 APIDemo \u7684 FragmentStack\u3002<\/p>\n<\/blockquote>\n

<\/p>\n

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\u4e00\u3001\u6548\u679c\u4e0e\u5e03\u5c40<\/span><\/h2>\n

Push \u538b\u6808\u3001Pop \u5f39\u6808\uff0c\u4e2d\u95f4 FrameLayout \u627f\u8f7d\u5f53\u524d Fragment\uff1a<\/p>\n

\"fragment_stack\"<\/a><\/p>\n

\u5e03\u5c40 fragment_stack.xml<\/code>\uff1a<\/p>\n

<LinearLayout xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"\n    android:layout_width=\"match_parent\"\n    android:layout_height=\"match_parent\"\n    android:gravity=\"center_horizontal\"\n    android:orientation=\"vertical\"\n    android:padding=\"4dip\" >\n    <LinearLayout\n        android:layout_width=\"wrap_content\"\n        android:layout_height=\"wrap_content\"\n        android:layout_weight=\"0\"\n        android:gravity=\"center_horizontal\"\n        android:measureWithLargestChild=\"true\"\n        android:orientation=\"horizontal\"\n        android:padding=\"4dip\" >\n        <Button\n            android:id=\"@+id\/new_fragment\"\n            android:layout_width=\"wrap_content\"\n            android:layout_height=\"wrap_content\"\n            android:text=\"Push\" >\n            <requestFocus \/>\n        <\/Button>\n        <Button\n            android:id=\"@+id\/delete_fragment\"\n            android:layout_width=\"wrap_content\"\n            android:layout_height=\"wrap_content\"\n            android:layout_weight=\"0\"\n            android:text=\"Pop\" \/>\n    <\/LinearLayout>\n    <FrameLayout\n        android:id=\"@+id\/simple_fragment\"\n        android:layout_width=\"match_parent\"\n        android:layout_height=\"0px\"\n        android:layout_weight=\"1\" \/>\n<\/LinearLayout><\/code><\/pre>\n
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\u4e8c\u3001\u538b\u6808\u4e0e\u5f39\u6808<\/span><\/h2>\n
Push\uff1amStackLevel++<\/code> \u540e replace<\/code> + addToBackStack(null)<\/code>\u3002Pop\uff1amStackLevel--<\/code> \u518d popBackStack()<\/code>\u3002CountingFragment \u7528 arguments \u4f20\u5165\u5e8f\u53f7\uff0c\u80cc\u666f\u8272\u6309 mNum % 3<\/code> \u8f6e\u6362\u84dd\u7eff\u6a59\uff08\u6570\u7ec4\u91cc\u8fd8\u6709\u7ea2\u8272\u672a\u7528\u5230\uff09\u3002<\/p>\n
public class FragmentStack extends Activity {\n    int mStackLevel = 0;\n\n    @Override\n    protected void onCreate(Bundle savedInstanceState) {\n        super.onCreate(savedInstanceState);\n        setContentView(R.layout.fragment_stack);\n        Button button = (Button) findViewById(R.id.new_fragment);\n        button.setOnClickListener(new OnClickListener() {\n            public void onClick(View v) {\n                mStackLevel++;\n                addFragmentToStack();\n            }\n        });\n        button = (Button) findViewById(R.id.delete_fragment);\n        button.setOnClickListener(new OnClickListener() {\n            public void onClick(View v) {\n                mStackLevel--;\n                getFragmentManager().popBackStack();\n            }\n        });\n    }\n\n    void addFragmentToStack() {\n        Fragment newFragment = CountingFragment.newInstance(mStackLevel);\n        FragmentTransaction ft = getFragmentManager().beginTransaction();\n        ft.replace(R.id.simple_fragment, newFragment);\n        ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);\n        ft.addToBackStack(null);\n        ft.commit();\n    }\n\n    public static class CountingFragment extends Fragment {\n        int mNum;\n        private static int[] sColorValue = new int[] {\n                android.R.color.holo_blue_light,\n                android.R.color.holo_green_light,\n                android.R.color.holo_orange_light,\n                android.R.color.holo_red_light };\n\n        static CountingFragment newInstance(int num) {\n            CountingFragment f = new CountingFragment();\n            Bundle args = new Bundle();\n            args.putInt(\"num\", num);\n            f.setArguments(args);\n            return f;\n        }\n\n        @Override\n        public void onCreate(Bundle savedInstanceState) {\n            super.onCreate(savedInstanceState);\n            mNum = getArguments() != null ? getArguments().getInt(\"num\") : 1;\n        }\n\n        @Override\n        public View onCreateView(LayoutInflater inflater, ViewGroup container,\n                Bundle savedInstanceState) {\n            View v = inflater.inflate(R.layout.fragment_stack_layout, container, false);\n            View tv = v.findViewById(R.id.text);\n            ((TextView) tv).setText(\"Fragment #\" + mNum);\n            tv.setBackgroundDrawable(getResources().getDrawable(android.R.drawable.gallery_thumb));\n            Log.v(\"TAG\", \"mNum % 3 \" + mNum % 3);\n            tv.setBackgroundColor(getActivity().getResources().getColor(sColorValue[mNum % 3]));\n            return v;\n        }\n    }\n}<\/code><\/pre>\n\n\n\n\n\n\n
\u64cd\u4f5c<\/th>\n\u4ee3\u7801<\/th>\n<\/tr>\n<\/thead>\n
\u538b\u6808<\/td>\nreplace \u540e ft.addToBackStack(null)<\/td>\n<\/tr>\n
\u5f39\u6808<\/td>\ngetFragmentManager().popBackStack()<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
FragmentTransaction ft = getFragmentManager().beginTransaction();\nft.addToBackStack(null);\n\ngetFragmentManager().popBackStack();<\/code><\/pre>\n
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\u4e00\u53e5\u8bdd\u603b\u7ed3\uff1areplace \u4e4b\u540e\u5fc5\u987b addToBackStack\uff0c\u8fd4\u56de\u952e \/ popBackStack \u624d\u80fd\u56de\u5230\u4e0a\u4e00\u4e2a Fragment\u3002<\/strong><\/p>\n<\/blockquote>\n<\/section>\n","protected":false},"excerpt":{"rendered":"
Activity \u6709\u4efb\u52a1\u6808\uff0cFragment \u4e5f\u6709\u56de\u9000\u6808\u3002\u628a Fragment addToBackStack  […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[67],"tags":[68],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/985"}],"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=985"}],"version-history":[{"count":3,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/985\/revisions"}],"predecessor-version":[{"id":989,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/985\/revisions\/989"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=985"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}