Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import android.annotation.TargetApi;
import android.app.AppOpsManager;

import android.content.Context;

import android.os.Binder;
import android.os.Build;

import android.util.Log;

import java.lang.reflect.Method;

public class Main {
    private static final String TAG = "HuaweiUtils";

    public static boolean checkFloatWindowPermission(Context context) {
        final int version = Build.VERSION.SDK_INT;
        if (version >= 19) {
            return checkOp(context, 24); //OP_SYSTEM_ALERT_WINDOW = 24;
        }
        return true;
    }

    @TargetApi(Build.VERSION_CODES.KITKAT)
    private 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 clazz = AppOpsManager.class;
                Method method = clazz.getDeclaredMethod("checkOp", int.class, int.class, String.class);
                return AppOpsManager.MODE_ALLOWED == (int) method.invoke(manager, op, Binder.getCallingUid(),
                        context.getPackageName());
            } catch (Exception e) {
                Log.e(TAG, Log.getStackTraceString(e));
            }
        } else {
            Log.e(TAG, "Below API 19 cannot invoke!");
        }
        return false;
    }
}