Android判断桌面快捷方式是否存在！

来源：互联网发布：移动手机信号测试软件编辑：程序博客网时间：2024/05/19 03:44

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

Java代码
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：

Java代码

        <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>

        
        <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>

        
        <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：
Java代码

        <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>

        
        <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>

        
        <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

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

Java代码
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：

Java代码
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;
    }

这里需要注意下的是，在创建桌面快捷方式需要的权限下，再在AndroidManifest里面添加另外一个权限就是：<uses-permission android:name="com.android.launcher.permission.READ_SETTINGS" />或<uses-permission android:name="com.android.launcher.permission.WRITE_SETTINGS" />