Android - onRequestPermissionsResult()已弃用。还有别的选择吗？
Android - onRequestPermissionsResult()已弃用。还有别的选择吗？
提问于 2021-03-10 01:21:02
我尝试实现从存储中写入和读取的请求权限。一切都很好，但今天安卓向我展示了方法onRequestPermissionsResult(...)已弃用。在StackOverflow中有很多关于这个主题的问题，但不幸的是，它们已经过时了。
我在片段中调用了下面的方法。
建议简单地调用：
requestPermissions(new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE},
StorageKeys.STORAGE_PERMISSION_CODE)而不是我的方法：
ActivityCompat.requestPermissions(getActivity(),
new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE},
StorageKeys.STORAGE_PERMISSION_CODE))但它们都表明onRequestPermissionsResult(...)已弃用。
下面是我的onRequestPermissionsResult(...)-method：
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions,
@NonNull int[] grantResults) {
if (requestCode == StorageKeys.STORAGE_PERMISSION_CODE) {
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
exportBibTex.createBibFile();
exportBibTex.writeBibFile(exportBibTex
.getBibDataLibrary(libraryModel, bookDao, noteDao));
Toast.makeText(getContext(),
getString(R.string.exported_file_stored_in) + '\n'
+ File.separator + StorageKeys.DOWNLOAD_FOLDER + File.separator + fileName
+ StorageKeys.BIB_FILE_TYPE, Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getContext(), R.string.storage_permission_denied,
Toast.LENGTH_SHORT).show();
}
}
}下面是一个简单的警告对话框，我在其中调用了onRequestPermissionsResult(...)：
private void showRequestPermissionDialog() {
AlertDialog.Builder reqAlertDialog = new AlertDialog.Builder(getContext());
reqAlertDialog.setTitle(R.string.storage_permission_needed);
reqAlertDialog.setMessage(R.string.storage_permission_alert_msg);
reqAlertDialog.setPositiveButton(R.string.ok,
(dialog, which) -> ActivityCompat.requestPermissions(getActivity(),
new String[] {Manifest.permission.WRITE_EXTERNAL_STORAGE},
StorageKeys.STORAGE_PERMISSION_CODE));
reqAlertDialog.setNegativeButton(R.string.cancel,
(dialog, which) -> dialog.dismiss());
reqAlertDialog.create().show();
}有没有什么替代onRequestPermissionsResult(...)的方法，我可以使用？
回答 7
Stack Overflow用户
发布于 2021-03-10 02:24:28
androidx.fragment.app.Fragment中不推荐使用onRequestPermissionsResult()方法。
所以您使用registerForActivityResult()方法而不是onRequestPermissionsResult()。
你可以参考这个URL。
以下是kotlin代码。但是你可以参考它。
val permReqLuncher = registerForActivityResult(ActivityResultContracts.RequestPermission()){
if (it) {
// Good pass
} else {
// Failed pass
}
}我从下面的URL添加了java代码。
How to get a permission request in new ActivityResult API (1.3.0-alpha05)?
private ActivityResultLauncher<String> mPermissionResult = registerForActivityResult(
new ActivityResultContracts.RequestPermission(),
new ActivityResultCallback<Boolean>() {
@Override
public void onActivityResult(Boolean result) {
if(result) {
Log.e(TAG, "onActivityResult: PERMISSION GRANTED");
} else {
Log.e(TAG, "onActivityResult: PERMISSION DENIED");
}
}
});
// Launch the permission window -- this is in onCreateView()
floatingActionButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mPermissionResult.launch(Manifest.permission.ACCESS_BACKGROUND_LOCATION);
}
});您可以请求多个权限。
val requestMultiplePermissions = registerForActivityResult(ActivityResultContracts.RequestMultiplePermissions()) { permissions ->
permissions.entries.forEach {
Log.e("DEBUG", "${it.key} = ${it.value}")
}
}
requestMultiplePermissions.launch(
arrayOf(
Manifest.permission.READ_CONTACTS,
Manifest.permission.ACCESS_FINE_LOCATION
)
)Stack Overflow用户
发布于 2021-07-10 01:40:25
Kotlin中的一种简单方法
import android.Manifest
import android.content.Context
import android.content.pm.PackageManager
import android.os.Build
import androidx.activity.result.contract.ActivityResultContracts
import androidx.core.app.ActivityCompat
import androidx.fragment.app.Fragment
class MyFragment : Fragment() {
companion object {
val TAG: String = MyFragment::class.java.simpleName
var PERMISSIONS = arrayOf(
Manifest.permission.CAMERA,
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE
)
}
private val permReqLauncher =
registerForActivityResult(ActivityResultContracts.RequestMultiplePermissions()) { permissions ->
val granted = permissions.entries.all {
it.value == true
}
if (granted) {
displayCameraFragment()
}
}
private fun takePhoto() {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
displayCameraFragment()
}
activity?.let {
if (hasPermissions(activity as Context, PERMISSIONS)) {
displayCameraFragment()
} else {
permReqLauncher.launch(
PERMISSIONS
)
}
}
}
// util method
private fun hasPermissions(context: Context, permissions: Array<String>): Boolean = permissions.all {
ActivityCompat.checkSelfPermission(context, it) == PackageManager.PERMISSION_GRANTED
}
private fun displayCameraFragment() {
// open camera fragment
}
}Stack Overflow用户
发布于 2021-07-28 14:39:32
替代registerForActivityResult
示例用法：
private fun permissionSetup() {
val permission = ContextCompat.checkSelfPermission(
requireContext(), Manifest.permission.READ_CONTACTS)
if (permission != PackageManager.PERMISSION_GRANTED) {
permissionsResultCallback.launch(Manifest.permission.READ_CONTACTS)
} else {
println("Permission isGranted")
}
}
private val permissionsResultCallback = registerForActivityResult(
ActivityResultContracts.RequestPermission()){
when (it) {
true -> { println("Permission has been granted by user") }
false -> {
Toast.makeText(requireContext(), "Permission denied", Toast.LENGTH_SHORT).show()
dialog.dismiss()
}
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/66551781
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