我正在使用Easy Permissions在我的项目中实现权限模型。
我正在尝试请求权限，如下所示：
CameraFragment.java:
public class CameraFragment extends BaseFragment implements EasyPermissions.PermissionCallbacks {
private String mCurrentPhotoPath;
private HomeActivity mHomeActivity;
public static CameraFragment getFragment() {
return new CameraFragment();
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == BaseConstants.REQUEST_CODE_CAPTURE_IMAGE && resultCode == Activity.RESULT_OK) {
galleryAddPic();
launchActivity(AddAnotherPhotoActivity.getActivityIntent(getContext(), mCurrentPhotoPath));
} else if (requestCode == BaseConstants.REQUEST_CODE_SETTINGS_PERMISSION_STORAGE) {
checkStoragePermission();
} else if (requestCode == BaseConstants.REQUEST_CODE_PICK_IMAGE && resultCode == Activity.RESULT_OK) {
if (data != null) {
mCurrentPhotoPath = FileUtils.getFile(getContext(), data.getData()).getAbsolutePath();
launchActivity(AddAnotherPhotoActivity.getActivityIntent(mHomeActivity, mCurrentPhotoPath));
}
}
}
@Override
public void onAttach(Context context) {
super.onAttach(context);
mHomeActivity = (HomeActivity) context;
}
@Override
protected int getResourceLayout() {
return R.layout.fragment_camera;
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
checkStoragePermission();
}
private void checkStoragePermission() {
String[] perms = {Manifest.permission.READ_EXTERNAL_STORAGE, Manifest.permission.WRITE_EXTERNAL_STORAGE};
if (EasyPermissions.hasPermissions(mHomeActivity, perms)) {
// Already have permission, do the thing
initializeSelectImage();
} else {
// Do not have permissions, request them now
EasyPermissions.requestPermissions(this, getString(R.string.rationale_storage),
BaseConstants.REQUEST_CODE_PERMISSION_STORAGE, perms);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
// Forward results to EasyPermissions
EasyPermissions.onRequestPermissionsResult(requestCode, permissions, grantResults, this);
}
@Override
public void onPermissionsGranted(int requestCode, List<String> perms) {
// Some permissions have been granted
// ...
initializeSelectImage();
}
@Override
public void onPermissionsDenied(int requestCode, List<String> perms) {
// Some permissions have been denied
// (Optional) Check whether the user denied any permissions and checked "NEVER ASK AGAIN."
// This will display a dialog directing them to enable the permission in app settings.
if (EasyPermissions.somePermissionPermanentlyDenied(this, perms)) {
new AppSettingsDialog.Builder(this, getString(R.string.rationale_never_ask_storage))
.setTitle(getString(R.string.title_settings_dialog))
.setPositiveButton(getString(R.string.title_settings_button_setting))
.setNegativeButton(getString(R.string.title_settings_button_cancel), null /* click listener */)
.setRequestCode(BaseConstants.REQUEST_CODE_SETTINGS_PERMISSION_STORAGE)
.build()
.show();
}
}
public void initializeSelectImage() {
SelectImageUsingBottomSheet selectImageUsingBottomSheet = new SelectImageUsingBottomSheet();
mHomeActivity.showDialogFragment(this, selectImageUsingBottomSheet, BaseConstants.REQUEST_CODE_SELECT_IMAGE);
}
public void pickImage() {
Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("image/*");
launchActivity(intent, BaseConstants.REQUEST_CODE_PICK_IMAGE, false);
}
public void onCameraClick() {
captureImage();
}
public void onGalleryClick() {
pickImage();
}
private void captureImage() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// Ensure that there's a camera activity to handle the intent
if (takePictureIntent.resolveActivity(mHomeActivity.getApplicationContext().getPackageManager()) != null) {
// Create the File where the photo should go
File photoFile = null;
try {
photoFile = createImageFile();
} catch (IOException ex) {
// Error occurred while creating the File
}
// Continue only if the File was successfully created
if (photoFile != null) {
Uri photoURI = FileProvider.getUriForFile(getContext(), "com.movinghub.snapyourapp.fileprovider", photoFile);
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoURI);
launchActivity(takePictureIntent, BaseConstants.REQUEST_CODE_CAPTURE_IMAGE, false);
}
}
}
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = getContext().getExternalFilesDir(Environment.DIRECTORY_PICTURES);
File image = File.createTempFile(
imageFileName, /* prefix */
".jpg",/* suffix */
storageDir/* directory */
);
// Save a file: path for use with ACTION_VIEW intents
mCurrentPhotoPath = image.getAbsolutePath();
return image;
}
private void galleryAddPic() {
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
File f = new File(mCurrentPhotoPath);
Uri contentUri = Uri.fromFile(f);
mediaScanIntent.setData(contentUri);
getActivity().sendBroadcast(mediaScanIntent);
}
}
但遗憾的是，这并不奏效。不幸的是，我的应用程序因以下日志而关闭：
java.lang.RuntimeException: Failure delivering result ResultInfo{who=@android:requestPermissions:, request=65636, result=-1, data=Intent { act=android.content.pm.action.REQUEST_PERMISSIONS (has extras) }} to activity {com.movinghub.snapyourapp/com.movinghub.snapyourapp.activity.HomeActivity}: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
at android.app.ActivityThread.deliverResults(ActivityThread.java:3720)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:3763)
at android.app.ActivityThread.-wrap16(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1403)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5443)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
Caused by: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
at android.support.v4.app.FragmentManagerImpl.checkStateLoss(FragmentManager.java:1538)
at android.support.v4.app.FragmentManagerImpl.enqueueAction(FragmentManager.java:1556)
at android.support.v4.app.BackStackRecord.commitInternal(BackStackRecord.java:696)
at android.support.v4.app.BackStackRecord.commit(BackStackRecord.java:662)
at android.support.v4.app.DialogFragment.show(DialogFragment.java:143)
at com.movinghub.snapyourapp.base.BaseAppCompatActivity.showDialogFragment(BaseAppCompatActivity.java:168)
at com.movinghub.snapyourapp.fragment.CameraFragment.initializeSelectImage(CameraFragment.java:122)
at com.movinghub.snapyourapp.fragment.CameraFragment.onPermissionsGranted(CameraFragment.java:101)
at pub.devrel.easypermissions.EasyPermissions.onRequestPermissionsResult(EasyPermissions.java:301)
at com.movinghub.snapyourapp.fragment.CameraFragment.onRequestPermissionsResult(CameraFragment.java:93)
at android.support.v4.app.FragmentActivity.onRequestPermissionsResult(FragmentActivity.java:911)
at com.movinghub.snapyourapp.activity.HomeActivity.onRequestPermissionsResult(HomeActivity.java:56)
at android.app.Activity.dispatchRequestPermissionsResult(Activity.java:6596)
at android.app.Activity.dispatchActivityResult(Activity.java:6474)
at android.app.ActivityThread.deliverResults(ActivityThread.java:3716)
at android.app.ActivityThread.handleSendResult(ActivityThread.java:3763)
at android.app.ActivityThread.-wrap16(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1403)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5443)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:728)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
任何人都可以帮我吗？