Android：在请求权限方面出现了问题。代码如下：

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英文:

Android: Issues with my asking for permissions. Code inside

问题

以下是您提供的代码的翻译部分：

  1. public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
  2.     Button getPermissions = (Button) getView().findViewById(R.id.get_permissions);
  3.     TextView permissionsText = (TextView) getView().findViewById(R.id.permissions_text);
  5.     getPermissions.setOnClickListener(new View.OnClickListener() {
  6.         @Override
  7.         public void onClick(View view) {
  8.             if (checkPermission()) {
  9.                 permissionsText.setText("已授权");
  10.                 permissionsText.setTextColor(Color.GREEN);
  11.             } else {
  12.                 requestPermission();
  13.             }
  14.         }
  15.     });
  16. }
  18. private void requestPermission() {
  19.     ActivityCompat.requestPermissions(getActivity(), new String[]
  20.             {
  21.                     ACCESS_FINE_LOCATION,
  22.                     ACCESS_COARSE_LOCATION,
  23.                     ACCESS_BACKGROUND_LOCATION,
  24.                     CALL_PHONE,
  25.                     INTERNET,
  26.                     READ_EXTERNAL_STORAGE,
  27.                     VIBRATE,
  28.                     USE_FULL_SCREEN_INTENT
  29.             }, RequestPermissionCode);
  30. }
  32. @Override
  33. public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
  34.     switch (requestCode) {
  36.         case RequestPermissionCode:
  38.             if (grantResults.length > 0) {
  40.                 boolean fineLocPermission = grantResults[0] == PackageManager.PERMISSION_GRANTED;
  41.                 boolean coarseLocPermission = grantResults[1] == PackageManager.PERMISSION_GRANTED;
  42.                 boolean backgroundLocPermission = grantResults[2] == PackageManager.PERMISSION_GRANTED;
  43.                 boolean phonePermission = grantResults[3] == PackageManager.PERMISSION_GRANTED;
  44.                 boolean internetPermission = grantResults[4] == PackageManager.PERMISSION_GRANTED;
  45.                 boolean readExternalStoragePermission = grantResults[5] == PackageManager.PERMISSION_GRANTED;
  46.                 boolean vibratePermission = grantResults[6] == PackageManager.PERMISSION_GRANTED;
  47.                 boolean fullScreenIntentPermission = grantResults[7] == PackageManager.PERMISSION_GRANTED;
  49.                 if (fineLocPermission && coarseLocPermission && backgroundLocPermission &&
  50.                     phonePermission && internetPermission && readExternalStoragePermission &&
  51.                     vibratePermission && fullScreenIntentPermission)
  52.                 {
  53.                     Toast.makeText(getActivity(), "已授予权限", Toast.LENGTH_LONG).show();
  54.                 }
  55.                 else {
  56.                     Toast.makeText(getActivity(), "权限已拒绝", Toast.LENGTH_LONG).show();
  57.                 }
  58.             }
  59.             break;
  60.     }
  61. }
  63. public boolean checkPermission() {
  65.     int FirstPermissionResult = ContextCompat.checkSelfPermission(getContext(), ACCESS_FINE_LOCATION);
  66.     int SecondPermissionResult = ContextCompat.checkSelfPermission(getContext(), ACCESS_COARSE_LOCATION);
  67.     int ThirdPermissionResult = ContextCompat.checkSelfPermission(getContext(), ACCESS_BACKGROUND_LOCATION);
  68.     int FourthPermissionResult = ContextCompat.checkSelfPermission(getContext(), CALL_PHONE);
  69.     int FifthPermissionResult = ContextCompat.checkSelfPermission(getContext(), INTERNET);
  70.     int SixthPermissionResult = ContextCompat.checkSelfPermission(getContext(), READ_EXTERNAL_STORAGE);
  71.     int SeventhPermissionResult = ContextCompat.checkSelfPermission(getContext(), VIBRATE);
  72.     int EighthPermissionResult = ContextCompat.checkSelfPermission(getContext(), USE_FULL_SCREEN_INTENT);
  74.     return FirstPermissionResult == PackageManager.PERMISSION_GRANTED &&
  75.             SecondPermissionResult == PackageManager.PERMISSION_GRANTED &&
  76.             ThirdPermissionResult == PackageManager.PERMISSION_GRANTED &&
  77.             FourthPermissionResult == PackageManager.PERMISSION_GRANTED &&
  78.             FifthPermissionResult == PackageManager.PERMISSION_GRANTED &&
  79.             SixthPermissionResult == PackageManager.PERMISSION_GRANTED &&
  80.             SeventhPermissionResult == PackageManager.PERMISSION_GRANTED &&
  81.             EighthPermissionResult == PackageManager.PERMISSION_GRANTED;
  82. }

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).

  1.     public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
  2. Button getPermissions = (Button)getView().findViewById(R.id.get_permissions);
  3. TextView permissionsText = (TextView)getView().findViewById(R.id.permissions_text);
  4. getPermissions.setOnClickListener(new View.OnClickListener() {
  5. @Override
  6. public void onClick(View view) {
  7. if(checkPermission()){
  8. permissionsText.setText("Granted");
  9. permissionsText.setTextColor(Color.GREEN);
  10. }
  11. else {
  12. requestPermission();
  13. }
  14. }
  15. });
  16. }
  17. private void requestPermission() {
  18. ActivityCompat.requestPermissions(getActivity(), new String[]
  19. {
  20. ACCESS_FINE_LOCATION,
  21. ACCESS_COARSE_LOCATION,
  22. ACCESS_BACKGROUND_LOCATION,
  23. CALL_PHONE,
  24. INTERNET,
  25. READ_EXTERNAL_STORAGE,
  26. VIBRATE,
  27. USE_FULL_SCREEN_INTENT
  28. }, RequestPermissionCode);
  29. }
  30. @Override
  31. public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
  32. switch (requestCode) {
  33. case RequestPermissionCode:
  34. if (grantResults.length > 0) {
  35. boolean fineLocPermission = grantResults[0] == PackageManager.PERMISSION_GRANTED;
  36. boolean coarseLocPermission = grantResults[1] == PackageManager.PERMISSION_GRANTED;
  37. boolean backgroundLocPermission = grantResults[2] == PackageManager.PERMISSION_GRANTED;
  38. boolean phonePermission = grantResults[3] == PackageManager.PERMISSION_GRANTED;
  39. boolean internetPermission = grantResults[4] == PackageManager.PERMISSION_GRANTED;
  40. boolean readExternalStoragePermission = grantResults[5] == PackageManager.PERMISSION_GRANTED;
  41. boolean vibratePermission = grantResults[6] == PackageManager.PERMISSION_GRANTED;
  42. boolean fullScreenIntentPermission = grantResults[7] == PackageManager.PERMISSION_GRANTED;
  43. if (fineLocPermission && coarseLocPermission && backgroundLocPermission && phonePermission && internetPermission && readExternalStoragePermission && vibratePermission && fullScreenIntentPermission)
  44. {
  45. Toast.makeText(getActivity(),"Permission Granted",Toast.LENGTH_LONG).show();
  46. }
  47. else {
  48. Toast.makeText(getActivity(),"Permission Denied",Toast.LENGTH_LONG).show();
  49. }
  50. }
  51. break;
  52. }
  53. }
  54. public boolean checkPermission() {
  55. int FirstPermissionResult = ContextCompat.checkSelfPermission(getContext(), ACCESS_FINE_LOCATION);
  56. int SecondPermissionResult = ContextCompat.checkSelfPermission(getContext(), ACCESS_COARSE_LOCATION);
  57. int ThirdPermissionResult = ContextCompat.checkSelfPermission(getContext(), ACCESS_BACKGROUND_LOCATION);
  58. int FourthPermissionResult = ContextCompat.checkSelfPermission(getContext(), CALL_PHONE);
  59. int FifthPermissionResult = ContextCompat.checkSelfPermission(getContext(), INTERNET);
  60. int SixthPermissionResult = ContextCompat.checkSelfPermission(getContext(), READ_EXTERNAL_STORAGE);
  61. int SeventhPermissionResult = ContextCompat.checkSelfPermission(getContext(), VIBRATE);
  62. int EigthPermissionResult = ContextCompat.checkSelfPermission(getContext(), USE_FULL_SCREEN_INTENT);
  63. return FirstPermissionResult == PackageManager.PERMISSION_GRANTED &&
  64. SecondPermissionResult == PackageManager.PERMISSION_GRANTED &&
  65. ThirdPermissionResult == PackageManager.PERMISSION_GRANTED &&
  66. FourthPermissionResult == PackageManager.PERMISSION_GRANTED &&
  67. FifthPermissionResult == PackageManager.PERMISSION_GRANTED &&
  68. SixthPermissionResult == PackageManager.PERMISSION_GRANTED &&
  69. SeventhPermissionResult == PackageManager.PERMISSION_GRANTED &&
  70. EigthPermissionResult == PackageManager.PERMISSION_GRANTED;
  71. }

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：

  1. @Override
  2. public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
  3.     super.onViewCreated(view, savedInstanceState);
  4.     requestPermissions(new String[] { Manifest.permission.ACCESS_FINE_LOCATION }, REQ_CODE_PERMISSION);
  5. }
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:

  1. @Override
  2. public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
  3. super.onViewCreated(view, savedInstanceState);
  4. requestPermissions(new String[] { Manifest.permission.ACCESS_FINE_LOCATION }, REQ_CODE_PERMISSION);
  5. }

huangapple
  • 本文由 发表于 2020年4月9日 02:49:17
  • 转载请务必保留本文链接：https://go.coder-hub.com/61107908.html
  • android
  • java
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