Question

我尝试在我的应用上测试我的GPS权限。

我已经建立了权限管理器并在清单中添加了GPS权限，因为GPS是一种危险的权限。但是，当我运行我的应用程序时，我看不到此权限的任何对话框，因为该应用程序向我敬酒，即使我从未有机会在对话框中允许或阻止此权限，但我还未获得此许可。

感谢任何帮助，这些都是我的课程：

明确许可

    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

MainActiviey

public class MainActivity extends AppCompatActivity {

public static final int GPS=1;
public static final String gpsFinePermission="Manifest.permission.ACCESS_FINE_LOCATION";

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    PermissionManager.check(MainActivity.this, gpsFinePermission, GPS);
    System.out.println("1");
}


@Override
protected void onStart() {
    //startService(new Intent(this,CurrentLocation.class));
    super.onStart();
    System.out.println("2");
}

@Override//when user allowed OR denied a permission
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    System.out.println("3");
    if(grantResults[0] == PackageManager.PERMISSION_GRANTED && requestCode == GPS){//Allowed
        Toast.makeText(MainActivity.this, "GPS permission granted", Toast.LENGTH_LONG).show();
        System.out.println("4");
    }else
        Toast.makeText(MainActivity.this, "GPS permission is IMPORTANT for this app", Toast.LENGTH_LONG).show();
    }
}

权限管理员

public class PermissionManager {
//A method that can be called from any Activity, to check for specific permission
public static void check(Activity activity, String permission, int requestCode){
    System.out.println("5");
    //If requested permission isn't Granted yet
    if (ActivityCompat.checkSelfPermission(activity, permission) != PackageManager.PERMISSION_GRANTED) {
        System.out.println("6");
        //Request permission from user
        ActivityCompat.requestPermissions(activity,new String[]{permission},requestCode);
    }
} 
}

Answer 1

你应该从Manifest.permission类中获取一个字符串。但是你将Manifest.permission.ACCESS_FINE_LOCATION作为String传递。你不应该使用它。

public static final String gpsFinePermission="Manifest.permission.ACCESS_FINE_LOCATION";

使用此功能。

public static final String gpsFinePermission= Manifest.permission.ACCESS_FINE_LOCATION;

无法动态查看危险权限的对话框

1 个答案: