我最近发现onActivityResult已弃用。我们该怎么处理呢?
有什么替代方案吗?
我最近发现onActivityResult已弃用。我们该怎么处理呢?
有什么替代方案吗?
当前回答
如果您正在使用SMS同意API,则使用以下代码(Kotlin):
resultLauncher.launch( consentIntent
)
var resultLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
if (result.resultCode == Activity.RESULT_OK) {
// There are no request codes
// val data: Intent? = result.data
val message = result.data?.getStringExtra(SmsRetriever.EXTRA_SMS_MESSAGE)
getOtpFromMessage(message)
}
}
其他回答
您可以为Koltin使用扩展函数。例如:
//random utils file
fun Fragment.buildGetContentRequest(function: (Uri) -> Unit): ActivityResultLauncher<String> {
return this.registerForActivityResult(ActivityResultContracts.GetContent()) {
function(it)
}
}
fun Fragment.buildTakePhotoRequest(function: (Boolean) -> Unit): ActivityResultLauncher<Uri> {
return this.registerForActivityResult(ActivityResultContracts.TakePicture()) {
function(it)
}
}
fun Fragment.buildSelectMultipleContentRequest(function: (MutableList<Uri>?) -> Unit): ActivityResultLauncher<String> {
return this.registerForActivityResult(ActivityResultContracts.GetMultipleContents()) {
function(it)
}
}
然后在你的片段中像这样
//your actual fragment logic
class YourFragment : Fragment() {
//we can assign our request in init process
private val mRequestSelectFiles = buildSelectMultipleContentRequest {
onFilesSelected(it)
}
fun onSelectFiles() {
val mime = "*/*"
mRequestSelectFiles.launch(mime)
}
fun onFilesSelected(list: MutableList<Uri>?) {
//your logic
}
}
这就是我如何替换多个requestCodes(把这段代码放在你的活动中):
ActivityResultLauncher<Intent> launchCameraActivity = registerForActivityResult(
new ActivityResultContracts.StartActivityForResult(),
new ActivityResultCallback<ActivityResult>() {
@Override
public void onActivityResult(ActivityResult result) {
if (result.getResultCode() == Activity.RESULT_OK) {
Intent data = result.getData();
Bitmap photoBitmap;
if(data != null && data.getExtras() != null){
photoBitmap = (Bitmap) data.getExtras().get("data");
if (photoBitmap != null) {
dataModel.setPhoto(ImageUtil.convert(photoBitmap));
imageTaken.setVisibility(View.VISIBLE);
imageTaken.setImageBitmap(photoBitmap);
}
}
}
}
});
ActivityResultLauncher<Intent> launchCameraAndGalleryActivity = registerForActivityResult(
new ActivityResultContracts.StartActivityForResult(),
new ActivityResultCallback<ActivityResult>() {
@Override
public void onActivityResult(ActivityResult result) {
if (result.getResultCode() == Activity.RESULT_OK) {
Intent data = result.getData();
Uri imageUri;
if (data != null) {
imageUri = data.getData();
InputStream imageStream;
try {
imageStream = getContentResolver().openInputStream(imageUri);
Bitmap photoBitmap = BitmapFactory.decodeStream(imageStream);
dataModel.setOtherImage(ImageUtil.convert(photoBitmap));
documentImageTaken.setVisibility(View.VISIBLE);
documentImageTaken.setImageBitmap(photoBitmap);
}catch (FileNotFoundException e) {
e.printStackTrace();
}
}
}
}
});
我是这样开展活动的:
Intent photoIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
launchCameraAndGalleryActivity.launch(photoIntent );
Intent galleryIntent= new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
launchCameraActivity.launch(galleryIntent);
如果您正在使用SMS同意API,则使用以下代码(Kotlin):
resultLauncher.launch( consentIntent
)
var resultLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
if (result.resultCode == Activity.RESULT_OK) {
// There are no request codes
// val data: Intent? = result.data
val message = result.data?.getStringExtra(SmsRetriever.EXTRA_SMS_MESSAGE)
getOtpFromMessage(message)
}
}
在Java 8中,它可以这样写:
ActivityResultLauncher<Intent> startActivityForResult = registerForActivityResult(
new ActivityResultContracts.StartActivityForResult(),
result -> {
if (result.getResultCode() == AppCompatActivity.RESULT_OK) {
Intent data = result.getData();
// ...
}
}
);
Intent intent = new Intent( ... );
startActivityForResult.launch(intent);
onActivityResult, startActivityForResult, requestPermissions和onRequestPermissionsResult从1.3.0-alpha04开始在androidx.fragment上被弃用,android.app.Activity上没有。 相反,你可以使用registerForActivityResult的活动结果api。