相机意图未显示在意图选择器中

Question

String chooseTitle = activity.getString(R.string.select_or_take_picture);

Intent getIntent = new Intent();
getIntent.setType("image/*");
getIntent.setAction(Intent.ACTION_GET_CONTENT);

Intent galleryIntent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
galleryIntent.setType("image/*");
PackageManager pm = activity.getApplicationContext().getPackageManager();
for (ResolveInfo ri: pm.queryIntentActivities(galleryIntent, PackageManager.MATCH_DEFAULT_ONLY)) {
  Intent intent = pm.getLaunchIntentForPackage(ri.activityInfo.packageName);
  intent.setAction(Intent.ACTION_PICK);
  intents.add(intent);
}

Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE, photoUri);
for (ResolveInfo ri : pm.queryIntentActivities(cameraIntent, 0)) {
  Intent intent = pm.getLaunchIntentForPackage(ri.activityInfo.packageName);
  intents.add(intent);
}

Intent chooserIntent = Intent.createChooser(getIntent, chooseTitle);
chooserIntent.putExtra(
    Intent.EXTRA_INITIAL_INTENTS,
    intents.toArray(new Parcelable[] {})
);

通过这种方式，选择器显示：

相机意图根本不显示。

但是如果我换行

Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE, photoUri);

到

Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

效果很好：

但问题是，我真的很想通过photoUri。我该怎么办？

我知道一个可能的替代方法是编写我自己的选择器对话框，但我确实想知道这是否是意图选择器中的错误，或者我没有正确使用它。

附言 @dkarmazi，这是我生成 Uri 的方式：

public Uri generatePhotoUri() {
  String timeStamp = new SimpleDateFormat("yyyyMMdd-HHmmss").format(new Date());
  String imageFileName = "XXX_" + timeStamp + ".jpg";
  File storageDir = Environment.getExternalStoragePublicDirectory(
      Environment.DIRECTORY_PICTURES);
  File imageFile = new File(storageDir, imageFileName);
  return Uri.fromFile(imageFile);
}

这是我的onActivityResult

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
  switch (requestCode) {
    case PICK_PHOTO:
      if (resultCode != Activity.RESULT_OK) {
        break;
      }
      Uri source = data == null ?
          mPhotoUri : // take picture
          data.getData(); // choose from other app
      if (source == null) {
        break;
      }
      // TODO: do with source
      break;
  }
  //....
}

@dkarmazi，我已经调试过了，我确保 resultCode 是 RESULT_CANCELED。

Answer 1

我最近处理了同样的问题，这是我的解决方案：

Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);

然后，一旦用户拍照，您应该可以使用提供的 photoUri 访问它

这里有一些关于EXTRA_OUTPUT 的文档，您也可以在同一页面上查找 ACTION_IMAGE_CAPTURE。

意图选择器更新：

// we create intent chooser by picking one of the intents
Intent chooserIntent = Intent.createChooser(cameraIntent, getResources().getString(R.string.pick_action_string_for_user));
// then we add any additional intents
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent[] { getIntent });
// chooserIntent is ready
startActivityForResult(chooserIntent, requestCode);

Answer 2

非常感谢@dkarmazi 帮助我调试这个问题。似乎我们没有足够的声誉来一起完善答案，所以我在这里发布解决方案。后来在我们的聊天中，我们找到了一个可能的原因，经过我的实验，现在它起作用了。我如何收集cameraIntents 其实是个问题，所以修改这部分代码

Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE, photoUri);
for (ResolveInfo ri : pm.queryIntentActivities(cameraIntent, 0)) {
  Intent intent = pm.getLaunchIntentForPackage(ri.activityInfo.packageName);
  intents.add(intent);
}

到

final Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
for(ResolveInfo ri : pm.queryIntentActivities(cameraIntent, 0)) {
  final String packageName = ri.activityInfo.packageName;
  final Intent intent = new Intent(cameraIntent);
  intent.setComponent(new ComponentName(ri.activityInfo.packageName, ri.activityInfo.name));
  intent.setPackage(packageName);
  intent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);
  intents.add(intent);
}

也需要改变

Intent galleryIntent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
galleryIntent.setType("image/*");
PackageManager pm = activity.getApplicationContext().getPackageManager();
for (ResolveInfo ri: pm.queryIntentActivities(galleryIntent, PackageManager.MATCH_DEFAULT_ONLY)) {
  Intent intent = pm.getLaunchIntentForPackage(ri.activityInfo.packageName);
  intent.setAction(Intent.ACTION_PICK);
  intents.add(intent);
}

到

Intent galleryIntent = new Intent(Intent.ACTION_PICK);
galleryIntent.setType("image/*");
PackageManager pm = activity.getApplicationContext().getPackageManager();
for (ResolveInfo ri: pm.queryIntentActivities(galleryIntent, PackageManager.MATCH_DEFAULT_ONLY)) {
  final String packageName = ri.activityInfo.packageName;
  final Intent intent = new Intent(galleryIntent);
  intent.setComponent(new ComponentName(ri.activityInfo.packageName, ri.activityInfo.name));
  intent.setPackage(packageName);
  intents.add(intent);
}

我讨厌它的样板，但最终它起作用了。