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android桌面添加快捷方式之判断是否存在无效

2011-09-15

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 bo...

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
<!-- 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&#39;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:
Java代码
<!-- 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&#39;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

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;
}

作者“TryLoveCatch”

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