问题

以下是您提供的代码的翻译部分：

public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
    Button getPermissions = (Button) getView().findViewById(R.id.get_permissions);
    TextView permissionsText = (TextView) getView().findViewById(R.id.permissions_text);

    getPermissions.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            if (checkPermission()) {
                permissionsText.setText("已授权");
                permissionsText.setTextColor(Color.GREEN);
            } else {
                requestPermission();
            }
        }
    });
}

private void requestPermission() {
    ActivityCompat.requestPermissions(getActivity(), new String[]
            {
                    ACCESS_FINE_LOCATION,
                    ACCESS_COARSE_LOCATION,
                    ACCESS_BACKGROUND_LOCATION,
                    CALL_PHONE,
                    INTERNET,
                    READ_EXTERNAL_STORAGE,
                    VIBRATE,
                    USE_FULL_SCREEN_INTENT
            }, RequestPermissionCode);
}

@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
    switch (requestCode) {

        case RequestPermissionCode:

            if (grantResults.length > 0) {

                boolean fineLocPermission = grantResults[0] == PackageManager.PERMISSION_GRANTED;
                boolean coarseLocPermission = grantResults[1] == PackageManager.PERMISSION_GRANTED;
                boolean backgroundLocPermission = grantResults[2] == PackageManager.PERMISSION_GRANTED;
                boolean phonePermission = grantResults[3] == PackageManager.PERMISSION_GRANTED;
                boolean internetPermission = grantResults[4] == PackageManager.PERMISSION_GRANTED;
                boolean readExternalStoragePermission = grantResults[5] == PackageManager.PERMISSION_GRANTED;
                boolean vibratePermission = grantResults[6] == PackageManager.PERMISSION_GRANTED;
                boolean fullScreenIntentPermission = grantResults[7] == PackageManager.PERMISSION_GRANTED;

                if (fineLocPermission && coarseLocPermission && backgroundLocPermission &&
                    phonePermission && internetPermission && readExternalStoragePermission &&
                    vibratePermission && fullScreenIntentPermission)
                {
                    Toast.makeText(getActivity(), "已授予权限", Toast.LENGTH_LONG).show();
                }
                else {
                    Toast.makeText(getActivity(), "权限已拒绝", Toast.LENGTH_LONG).show();
                }
            }
            break;
    }
}

public boolean checkPermission() {

    int FirstPermissionResult = ContextCompat.checkSelfPermission(getContext(), ACCESS_FINE_LOCATION);
    int SecondPermissionResult = ContextCompat.checkSelfPermission(getContext(), ACCESS_COARSE_LOCATION);
    int ThirdPermissionResult = ContextCompat.checkSelfPermission(getContext(), ACCESS_BACKGROUND_LOCATION);
    int FourthPermissionResult = ContextCompat.checkSelfPermission(getContext(), CALL_PHONE);
    int FifthPermissionResult = ContextCompat.checkSelfPermission(getContext(), INTERNET);
    int SixthPermissionResult = ContextCompat.checkSelfPermission(getContext(), READ_EXTERNAL_STORAGE);
    int SeventhPermissionResult = ContextCompat.checkSelfPermission(getContext(), VIBRATE);
    int EighthPermissionResult = ContextCompat.checkSelfPermission(getContext(), USE_FULL_SCREEN_INTENT);

    return FirstPermissionResult == PackageManager.PERMISSION_GRANTED &&
            SecondPermissionResult == PackageManager.PERMISSION_GRANTED &&
            ThirdPermissionResult == PackageManager.PERMISSION_GRANTED &&
            FourthPermissionResult == PackageManager.PERMISSION_GRANTED &&
            FifthPermissionResult == PackageManager.PERMISSION_GRANTED &&
            SixthPermissionResult == PackageManager.PERMISSION_GRANTED &&
            SeventhPermissionResult == PackageManager.PERMISSION_GRANTED &&
            EighthPermissionResult == PackageManager.PERMISSION_GRANTED;
}

请注意，以上是代码的翻译，其中的注释、变量名等未包含在内。

英文:

I am trying to give the user an option to grant permission in my code as per Google best practices. The code below is what I have tried. The first time I ran it on the emulator it asked for a permission. Nothing else was done. No toast showed up, no green "Granted" text, etc. Logcat is silent on the issue. Does anyone see what have I missed? (Note: This code is inside a fragment).

    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
Button getPermissions = (Button)getView().findViewById(R.id.get_permissions);
TextView permissionsText = (TextView)getView().findViewById(R.id.permissions_text);
getPermissions.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(checkPermission()){
permissionsText.setText(&quot;Granted&quot;);
permissionsText.setTextColor(Color.GREEN);
}
else {
requestPermission();
}
}
});
}
private void requestPermission() {
ActivityCompat.requestPermissions(getActivity(), new String[]
{
ACCESS_FINE_LOCATION,
ACCESS_COARSE_LOCATION,
ACCESS_BACKGROUND_LOCATION,
CALL_PHONE,
INTERNET,
READ_EXTERNAL_STORAGE,
VIBRATE,
USE_FULL_SCREEN_INTENT
}, RequestPermissionCode);
}
@Override
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
switch (requestCode) {
case RequestPermissionCode:
if (grantResults.length &gt; 0) {
boolean fineLocPermission = grantResults[0] == PackageManager.PERMISSION_GRANTED;
boolean coarseLocPermission = grantResults[1] == PackageManager.PERMISSION_GRANTED;
boolean backgroundLocPermission = grantResults[2] == PackageManager.PERMISSION_GRANTED;
boolean phonePermission = grantResults[3] == PackageManager.PERMISSION_GRANTED;
boolean internetPermission = grantResults[4] == PackageManager.PERMISSION_GRANTED;
boolean readExternalStoragePermission = grantResults[5] == PackageManager.PERMISSION_GRANTED;
boolean vibratePermission = grantResults[6] == PackageManager.PERMISSION_GRANTED;
boolean fullScreenIntentPermission = grantResults[7] == PackageManager.PERMISSION_GRANTED;
if (fineLocPermission &amp;&amp; coarseLocPermission &amp;&amp; backgroundLocPermission &amp;&amp; phonePermission &amp;&amp; internetPermission &amp;&amp; readExternalStoragePermission &amp;&amp; vibratePermission &amp;&amp; fullScreenIntentPermission)
{
Toast.makeText(getActivity(),&quot;Permission Granted&quot;,Toast.LENGTH_LONG).show();
}
else {
Toast.makeText(getActivity(),&quot;Permission Denied&quot;,Toast.LENGTH_LONG).show();
}
}
break;
}
}
public boolean checkPermission() {
int FirstPermissionResult = ContextCompat.checkSelfPermission(getContext(), ACCESS_FINE_LOCATION);
int SecondPermissionResult = ContextCompat.checkSelfPermission(getContext(), ACCESS_COARSE_LOCATION);
int ThirdPermissionResult = ContextCompat.checkSelfPermission(getContext(), ACCESS_BACKGROUND_LOCATION);
int FourthPermissionResult = ContextCompat.checkSelfPermission(getContext(), CALL_PHONE);
int FifthPermissionResult = ContextCompat.checkSelfPermission(getContext(), INTERNET);
int SixthPermissionResult = ContextCompat.checkSelfPermission(getContext(), READ_EXTERNAL_STORAGE);
int SeventhPermissionResult = ContextCompat.checkSelfPermission(getContext(), VIBRATE);
int EigthPermissionResult = ContextCompat.checkSelfPermission(getContext(), USE_FULL_SCREEN_INTENT);
return FirstPermissionResult == PackageManager.PERMISSION_GRANTED &amp;&amp;
SecondPermissionResult == PackageManager.PERMISSION_GRANTED &amp;&amp;
ThirdPermissionResult == PackageManager.PERMISSION_GRANTED &amp;&amp;
FourthPermissionResult == PackageManager.PERMISSION_GRANTED &amp;&amp;
FifthPermissionResult == PackageManager.PERMISSION_GRANTED &amp;&amp;
SixthPermissionResult == PackageManager.PERMISSION_GRANTED &amp;&amp;
SeventhPermissionResult == PackageManager.PERMISSION_GRANTED &amp;&amp;
EigthPermissionResult == PackageManager.PERMISSION_GRANTED;
}

答案1

得分: 1

在Fragment中使用requestPermissions(arrayOfPermissions, REQ_CODE)代替ActivityCompat.requestPermissions()：

一个Fragment有一个名为requestPermissions()的方法，我不是指你在代码中命名的方法。

然后，在Fragment中会正确地调用onRequestPermissionsResult。

示例代码：

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    requestPermissions(new String[] { Manifest.permission.ACCESS_FINE_LOCATION }, REQ_CODE_PERMISSION);
}

英文:

In a Fragment use requestPermissions(arrayOfPermissions, REQ_CODE) instead of ActivityCompat.requestPermissions():

A Fragment has a method named requestPermissions() and I don't mean the method you named it in your code.

onRequestPermissionsResult is then invoked correctly in the Fragment.

Sample Code:

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
requestPermissions(new String[] { Manifest.permission.ACCESS_FINE_LOCATION }, REQ_CODE_PERMISSION);
}

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