/**
* 判断是有悬浮框权限
* @return
*/
public static boolean canDrawOverlays(Context context) {
try {
return Settings.canDrawOverlays(context);
} catch (NoSuchMethodError e) {
}
}
/**
* 判断是否缺少权限
* @param permission
* @return
*/
public static boolean checkSelfPermission(String permission) {
return ContextCompat.checkSelfPermission(ApplicationContext.getInstance(), "android.permission.SYSTEM_ALERT_WINDOW") ==
PackageManager.PERMISSION_GRANTED;
}
public static boolean checkPermission(String permission) {
return (PackageManager.PERMISSION_GRANTED ==
ApplicationContext.getInstance().getPackageManager().checkPermission("android.permission.SYSTEM_ALERT_WINDOW", ApplicationContext.getInstance().getPackageName()));
}
/**
* 4.4 以上可以直接判断准确
*
* 4.4 以下非MIUI直接返回true
*
* 4.4 以下MIUI 可 判断 上一次打开app 时 是否开启了悬浮窗权限
*
* @param context
* @return
*/
//OP_SYSTEM_ALERT_WINDOW=24   op = 24
public static boolean checkOp(Context context, int op) {
final int version = Build.VERSION.SDK_INT;
if (version >= 19) {
AppOpsManager manager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
try {
Class<?> spClazz = Class.forName(manager.getClass().getName());
Method method = manager.getClass().getDeclaredMethod("checkOp", int.class, int.class, String.class);
int property = (Integer) method.invoke(manager, op,
Binder.getCallingUid(), context.getPackageName());
if (AppOpsManager.MODE_ALLOWED == property) {
return true;
} else {
return false;
}
} catch (Exception e) {
}
} else {
}
return true;
}
/**
* 判断 悬浮窗口权限是否打开
*
* @param context
* @return true 允许  false禁止
*/
public static boolean getAppOps(Context context) {
try {
Object object = context.getSystemService("appops");
if (object == null) {
return false;
}
Class localClass = object.getClass();
Class[] arrayOfClass = new Class[3];
arrayOfClass[0] = Integer.TYPE;
arrayOfClass[1] = Integer.TYPE;
arrayOfClass[2] = String.class;
Method method = localClass.getMethod("checkOp", arrayOfClass);
if (method == null) {
return false;
}
Object[] arrayOfObject1 = new Object[3];
arrayOfObject1[0] = Integer.valueOf(24);
arrayOfObject1[1] = Integer.valueOf(Binder.getCallingUid());
arrayOfObject1[2] = context.getPackageName();
int m = ((Integer) method.invoke(object, arrayOfObject1)).intValue();
return m == AppOpsManager.MODE_ALLOWED;
} catch (Exception ex) {
}
return false;
}



作者: ​​一点点征服​​