Android中6.0及以上悬浮窗申请权限

1.判断版本、权限

try{

    //判断当前系统版本    if(Build.VERSION.SDK_INT>=23) {

//判断权限是否已经申请过了（加上这个判断，则使用的悬浮窗的时候；如果权限已经申请则不再跳转到权限开启界面）        if (!Settings.canDrawOverlays(this)){

//申请权限            Intent  intent2=new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION);            startActivityForResult(intent2, 1);        }else{

//创建悬浮窗            Intent intent3 = new Intent(MainActivity.this, MenuService.class);            startService(intent3);        }    }else{        Intent intent3 = new Intent(MainActivity.this, MenuService.class);        startService(intent3);    }    System.out.println("Build.VERSION.SDK_INT::::"+Build.VERSION.SDK_INT);}catch (Exception e){    e.printStackTrace();}

2.回调结果

@RequiresApi(api = Build.VERSION_CODES.M)protected void onActivityResult(int requestCode, int resultCode, Intent data) {    if (requestCode == 1) {        if(Build.VERSION.SDK_INT>=23) {            if (!Settings.canDrawOverlays(this)) {                Toast.makeText(MainActivity.this, "权限授予失败，无法开启悬浮窗", Toast.LENGTH_SHORT).show();            } else {                Toast.makeText(MainActivity.this, "权限授予成功！", Toast.LENGTH_SHORT).show();                //创建悬浮窗                Intent intent = new Intent(MainActivity.this, MenuService.class);                startService(intent);            }        }    }}

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