Android M权限关闭我的应用 [英] Android M permissions close my app

问题描述

我在登录"屏幕上检查了所需的权限.对话框显示询问我需要的4个权限.很好，但是当对话框出现时，背景变成黑色，我的应用程序关闭(不会崩溃，只是关闭).选择完权限后，我会再次打开该应用程序，并从停止处继续运行.显示权限对话框时，如何使应用程序继续运行?我使用一个检查权限的类，并在登录"活动中对其进行调用.

I check for the required permissions on my Log In screen. The dialog shows asking for the 4 permissions I need. All good, but when the dialog appears, the background becomes black and my app closes (doesn't crash, just closes). When I'm done with choosing the permissions I open the app again and it continues running from where it stopped. How can I make the app continue running while the permissions dialog is shown? I use a class which checks for permissions and call it in the Log In activity.

课程:

public abstract class RuntimePermissionsActivity extends AppCompatActivity {
private SparseIntArray mErrorString;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    mErrorString = new SparseIntArray();
}

@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults){
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    int permissionCheck = PackageManager.PERMISSION_GRANTED;
    for (int permission : grantResults){
        permissionCheck = permissionCheck + permission;
    }
    if ((grantResults.length>0) && permissionCheck == PackageManager.PERMISSION_GRANTED){
        onPermissionsGranted(requestCode);
    }
    else {

                Intent intent = new Intent();
                intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
                intent.addCategory(Intent.CATEGORY_DEFAULT);
                intent.setData(Uri.parse("package:" + getPackageName()));
                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
                intent.addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS);
                startActivity(intent);
    }
}

public void requestAppPermissions(final String[] requestedPermissions, final int requestCode){
    int stringId = 0;
    mErrorString.put(requestCode, stringId);
    int permissionCheck = PackageManager.PERMISSION_GRANTED;
    boolean shouldShowRequestPermissionRationale = false;
    for (String permission : requestedPermissions){
        permissionCheck = permissionCheck + ContextCompat.checkSelfPermission(this, permission);
        shouldShowRequestPermissionRationale = ActivityCompat.shouldShowRequestPermissionRationale(this, permission);
    }
    if(permissionCheck != PackageManager.PERMISSION_GRANTED){
        if(shouldShowRequestPermissionRationale){
                    ActivityCompat.requestPermissions(RuntimePermissionsActivity.this, requestedPermissions, requestCode);
        }
        else {
            ActivityCompat.requestPermissions(this, requestedPermissions, requestCode);
            Toast.makeText(RuntimePermissionsActivity.this, "Please relaunch the application in order for the changes to take effect!", Toast.LENGTH_LONG).show();
        }
    }
    else {
        onPermissionsGranted(requestCode);
    }

}
public abstract void onPermissionsGranted(int requestCode);
}

登录"活动调用:

LoginActivity.super.requestAppPermissions(new
            String[]{Manifest.permission.READ_CONTACTS, Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION,
            Manifest.permission.CAMERA, Manifest.permission.WRITE_EXTERNAL_STORAGE}, REQUEST_PERMISSIONS);

推荐答案

在任何Activity中实现权限的示例.

An example of implementing Permissions in any Activity.

SampleActivity.java

SampleActivity.java

public class SampleActivity extends AppCompatActivity{
    private final int PERMISSION_CODE = 1;
    Button button;
    @override
    onCreate(Bundle savedInstance){
        super.onCreate(savedInstance);
        setContentView(R.layout.your_layout);
        button = (Button)findViewById(R.id.button);
        button.setOnClickListener(new OnClickListener(){
            @override
            public void onClick(View view){
                requestPermissionAndContinue();
            }
        });
        //remaining code to continue using the app
        //your actual code should also be in this same class
    }

    private void requestPermissionAndContinue(){
        if(ContextCompat.checkSelfPermission(this, Manifest.permission.READ_CONTACTS) != PackageManager.PERMISSION_GRANTED){
            if(ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.READ_CONTACTS)){
                Log.e(TAG, "permission denied, show dialog");
            }else{
                ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.READ_CONTACTS}, PERMISSION_CODE);
            }
        }else{
            accessContacts();
        }
    }

    private void accessContacts(){
        //your code once you receive permission
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        if(grantResults.length > 0 && permissions[0]==PackageManager.PERMISSION_GRANTED){
            accessContacts();
        }else{
             //redirect to settings page or ask permission again
        }
    }
}

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