Android 检查APP是否被设置禁止显示通知

即检测下图的「显示通知」有没有被打勾



代码来自爆栈，未测试

/**
* Created by desgraci on 5/7/15.
*/
public class NotificationsUtils {

private static final String CHECK_OP_NO_THROW = "checkOpNoThrow";
private static final String OP_POST_NOTIFICATION = "OP_POST_NOTIFICATION";

public static boolean isNotificationEnabled() {

AppOpsManager mAppOps = (AppOpsManager) GlobalContext.getContext().getSystemService(Context.APP_OPS_SERVICE);

ApplicationInfo appInfo = GlobalContext.getContext().getApplicationInfo();

String pkg = GlobalContext.getContext().getApplicationContext().getPackageName();

int uid = appInfo.uid;

Class appOpsClass = null; /* Context.APP_OPS_MANAGER */

try {

appOpsClass = Class.forName(AppOpsManager.class.getName());

Method checkOpNoThrowMethod = appOpsClass.getMethod(CHECK_OP_NO_THROW, Integer.TYPE, Integer.TYPE, String.class);

Field opPostNotificationValue = appOpsClass.getDeclaredField(OP_POST_NOTIFICATION);
int value = (int)opPostNotificationValue.get(Integer.class);

return ((int)checkOpNoThrowMethod.invoke(mAppOps,value, uid, pkg) == AppOpsManager.MODE_ALLOWED);

} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (NoSuchFieldException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
return false;
}
}