Android请求权限回拨 [英] Android Request Permission Callback

问题描述

我试图通过 https://developers.google.com/实现Android权限android / guides / permissions

几个问题：
1）回调函数onRequestPermissionResult - 其中的参数是String []权限和int [ ] grantResults从？
2）我一直为grantResults和String []权限获得空值
3）我已经将const REQUEST_LOCATION的值设置为0 - 这个const的值是多少？

  if（ActivityCompat.checkSelfPermission（this，Manifest.permission.ACCESS_FINE_LOCATION）
！= PackageManager.PERMISSION_GRANTED）{
 //立即检查权限
 ActivityCompat.requestPermissions（this，
 new String [] {Manifest.permission.ACCESS_FINE_LOCATION}，
 REQUEST_LOCATION）; 
} else {
 //已授予权限，照常继续
位置myLocation = 
 LocationServices.FusedLocationApi.getLastLocation（mGoogleApiClient）; 
} 
  

一个不相关的问题...获取Google地图API密钥时需要设置SHA-1的值或者是可选的，只是将键限制在android中。

谢谢。

  public void onRequestPermissionsResult（int requestCode，
 String [] permissions，
 int [] grantResults）
  

解决方案

public class RequestUserPermission {

 私人活动活动; 
 
 
 //存储权限
 private static final int REQUEST_PERMISSION = 1; 
 private static String [] PERMISSIONS = {
 Manifest.permission.READ_EXTERNAL_STORAGE，
 Manifest.permission.WRITE_EXTERNAL_STORAGE，
}; 
 
 public RequestUserPermission（Activity activity）{
 this.activity = activity; 
 
 $ b public boolean verifyStoragePermissions（）{
 //检查我们是否有写入权限
 int permissionWrite = ActivityCompat.checkSelfPermission（activity，Manifest.permission.WRITE_EXTERNAL_STORAGE） ; 
 int permissionRead = ActivityCompat.checkSelfPermission（activity，Manifest.permission.READ_EXTERNAL_STORAGE）; $（b）
 $ b if（（permissionWrite！= PackageManager.PERMISSION_GRANTED）|| 
（permissionRead！= PackageManager.PERMISSION_GRANTED））{
 //我们没有权限，所以提示用户
 ActivityCompat.requestPermissions（
 activity，
 PERMISSIONS，
 REQUEST_PERMISSION 
）; 
返回false; 
} else {
 return true; 
} 
} 
 
 public void providePermission（）{
 verifyStoragePermissions（）; 
 
 $ b public void forceFullOpenPermission（）{
 if（！verifyStoragePermissions（））{
 Intent intent = new Intent（Settings.ACTION_APPLICATION_DETAILS_SETTINGS）; 
 Uri uri = Uri.fromParts（package，activity.getPackageName（），null）; 
 intent.setData（uri）; 
 activity.startActivityForResult（intent，REQUEST_PERMISSION）; 
 
 
  

在您的活动中

  RequestUserPermission requestUserPermission = new 
 RequestUserPermission（DashBoard.this）; 
 requestUserPermission.verifyStoragePermissions（）; 
  

如果您想强制开放权限 b

  requestUserPermission.forceFullOpenPermission（）; 
  

I'm trying to implement Android permissions from https://developers.google.com/android/guides/permissions

A couple of ques: 1) The callback onRequestPermissionResult - where are the parameters String[] permissions and int[]grantResults from? 2) I keep getting null values for grantResults and String[] permissions 3) I have set the value of the const REQUEST_LOCATION to 0 - does it matter what the value of this const is?

if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)
                != PackageManager.PERMISSION_GRANTED) {
  // Check Permissions Now
  ActivityCompat.requestPermissions(this,
        new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
        REQUEST_LOCATION);
} else {
  // permission has been granted, continue as usual
  Location myLocation =
LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
}

One unrelated ques...when getting a google map API key is it required to set the SHA-1 value or is that optional and just limits the key to android.

Thanks.

public void onRequestPermissionsResult(int requestCode,
                                       String[] permissions,
                                       int[] grantResults) 

解决方案

public class RequestUserPermission {

private Activity activity;


// Storage Permissions
private static final int REQUEST_PERMISSION = 1;
private static String[] PERMISSIONS = {
        Manifest.permission.READ_EXTERNAL_STORAGE,
        Manifest.permission.WRITE_EXTERNAL_STORAGE,
};

public RequestUserPermission(Activity activity) {
    this.activity = activity;
}

public  boolean verifyStoragePermissions() {
    // Check if we have write permission
    int permissionWrite = ActivityCompat.checkSelfPermission(activity, Manifest.permission.WRITE_EXTERNAL_STORAGE);
    int permissionRead = ActivityCompat.checkSelfPermission(activity, Manifest.permission.READ_EXTERNAL_STORAGE);

    if ((permissionWrite != PackageManager.PERMISSION_GRANTED) ||
            (permissionRead != PackageManager.PERMISSION_GRANTED)) {
        // We don't have permission so prompt the user
        ActivityCompat.requestPermissions(
                activity,
                PERMISSIONS,
                REQUEST_PERMISSION
        );
        return false;
    }else{
        return true;
    }
}

public void providePermission(){
    verifyStoragePermissions();
}

public void forceFullOpenPermission(){
    if(!verifyStoragePermissions()){
        Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
        Uri uri = Uri.fromParts("package", activity.getPackageName(), null);
        intent.setData(uri);
        activity.startActivityForResult(intent, REQUEST_PERMISSION);
    }
}

In your Activity

RequestUserPermission requestUserPermission = new 
RequestUserPermission(DashBoard.this);
    requestUserPermission.verifyStoragePermissions();

If you want to forceful open permission

requestUserPermission.forceFullOpenPermission();

这篇关于Android请求权限回拨的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！