2011.09.15 ——— android 桌面添加快捷方式之判断是否存在无效

2011.09.15 ——— android 桌面添加快捷方式之判断是否存在无效

参考：http://maxuefeng.blog.51cto.com/1876326/528645
http://blog.163.com/ethan_518/blog/static/177959139201161934629363/

前面写了如何创建删除和判断快捷方式的方法但是后来发现判断快捷方式的方法不是总是很有效上网查了下发现大家的为问题都是2.2版本之后的就判断不正确了

在此将原来的判断方法贴一下

private boolean hasShortCut() {        ContentResolver resolver = getContentResolver();        Cursor cursor = resolver.query(Uri.parse("content://com.android.launcher.settings/favorites?notify=true"), null, "title=?",                        new String[] {getString(R.string.app_name)}, null);        if (cursor != null && cursor.moveToFirst()) {                cursor.close();                return true;        }        return false;}

后来我看了一下2.2版本和1.5版本的launcher中的清单文件

1.5的如下：

<!-- Intent received used to install shortcuts from other applications -->        <receiver            android:name=".InstallShortcutReceiver"            android:permission="com.lp.launcher.permission.INSTALL_SHORTCUT">            <intent-filter>                <action android:name="com.lp.launcher.action.INSTALL_SHORTCUT" />            </intent-filter>        </receiver>        <!-- Intent received used to uninstall shortcuts from other applications -->        <receiver            android:name=".UninstallShortcutReceiver"            android:permission="com.lp.launcher.permission.UNINSTALL_SHORTCUT">            <intent-filter>                <action android:name="com.lp.launcher.action.UNINSTALL_SHORTCUT" />            </intent-filter>        </receiver>        <!-- The settings provider contains Home's data, like the workspace favorites -->        <provider            android:name="LauncherProvider"            android:authorities="com.lp.launcher.settings"            android:writePermission="com.lp.launcher.permission.WRITE_SETTINGS"            android:readPermission="com.lp.launcher.permission.READ_SETTINGS" />

2.2的如下：

<!-- Intent received used to install shortcuts from other applications -->        <receiver            android:name="com.android.launcher2.InstallShortcutReceiver"            android:permission="com.android.launcher.permission.INSTALL_SHORTCUT">            <intent-filter>                <action android:name="com.android.launcher.action.INSTALL_SHORTCUT" />            </intent-filter>        </receiver>        <!-- Intent received used to uninstall shortcuts from other applications -->        <receiver            android:name="com.android.launcher2.UninstallShortcutReceiver"            android:permission="com.android.launcher.permission.UNINSTALL_SHORTCUT">            <intent-filter>                <action android:name="com.android.launcher.action.UNINSTALL_SHORTCUT" />            </intent-filter>        </receiver>        <!-- The settings provider contains Home's data, like the workspace favorites -->        <provider            android:name="com.android.launcher2.LauncherProvider"            android:authorities="com.android.launcher2.settings"            android:writePermission="com.android.launcher.permission.WRITE_SETTINGS"            android:readPermission="com.android.launcher.permission.READ_SETTINGS" />

可以看出来创建和删除快捷方式的receiver没什么变化
但是查询的provider有了变化

android:authorities="com.android.launcher.settings"

android:authorities="com.android.launcher2.settings"

所以说我们的方法用在2.2之后的版本是无效的

现修改代码如下：

public static boolean hasShortCut(Context context) {String url = "";System.out.println(getSystemVersion());if(getSystemVersion() < 8){url = "content://com.android.launcher.settings/favorites?notify=true";}else{url = "content://com.android.launcher2.settings/favorites?notify=true";}        ContentResolver resolver = context.getContentResolver();        Cursor cursor = resolver.query(Uri.parse(url), null, "title=?",                        new String[] {context.getString(R.string.app_name)}, null);        if (cursor != null && cursor.moveToFirst()) {                cursor.close();                return true;        }        return false;}private static int getSystemVersion(){return android.os.Build.VERSION.SDK_INT;}

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