MIUI 判断悬浮窗权限

灰太狼 2022-08-18 10:53 227阅读 0赞

/**
    * Created by chenzy on 2015/3/31.
    *
    * MIUI 悬浮窗判断工具类
    */
    public class AlterWindowUtil {
        public static final String TAG ="AlterWindowUtil";
    
        /**
         * 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
         */
        @TargetApi(Build.VERSION_CODES.KITKAT)
        public static boolean isFloatWindowOpAllowed(Context context) {
            final int version = Build.VERSION.SDK_INT;
    
            if(!DeviceUtil.isFlyme4() && !DeviceUtil.isMiui(context)){
                return true;
            }
    
            if (version >= 19) {
                return checkOp(context, 24);  //自己写就是24 为什么是24?看AppOpsManager //AppOpsManager.OP_SYSTEM_ALERT_WINDOW
            } else {
                if(DeviceUtil.isMiui(context)){
                    if ((context.getApplicationInfo().flags & 1 << 27) == 1 <<27 ) {
                        return true;
                    } else {
                        return false;
                    }
                }else{
                    return true;
                }
            }
    
        }
    
        @TargetApi(Build.VERSION_CODES.KITKAT)
        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 managerClass = manager.getClass();
                    Method method = managerClass.getDeclaredMethod("checkOp", int.class, int.class, String.class);
                    int isAllowNum = (Integer) method.invoke(manager, op, Binder.getCallingUid(), context.getPackageName());
    
                    if (AppOpsManager.MODE_ALLOWED == isAllowNum) {
                        return true;
                    } else {
                        return false;
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
            return false;
        }
    
    }