queryIntentActivityOptions 不工作

Question

我正在尝试创建一个对话框，显示用户 phone 中的所有应用程序，可用于 select 来自存储的照片或使用相机拍摄照片。

这是 my previous question 的后续。

我发现用可以执行上述操作的应用程序填充我的自定义对话框中的列表视图的最佳方法是使用 queryIntentActivityOptions() 方法，但它不起作用。 我的列表视图中没有可用于访问图像或使用相机拍摄图像的应用程序。

private void acquirePicture(){
    Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
    photoPickerIntent.setType("image/*");

    Intent takePicture = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    startActivityForResult(photoPickerIntent, 1);

    final Dialog dialog = new Dialog(this);
    dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
    WindowManager.LayoutParams WMLP = dialog.getWindow().getAttributes();
    WMLP.gravity = Gravity.CENTER;
    dialog.getWindow().setAttributes(WMLP);
    dialog.getWindow().setBackgroundDrawable(
            new ColorDrawable(android.graphics.Color.TRANSPARENT));
    dialog.setCanceledOnTouchOutside(true);
    dialog.setContentView(R.layout.about_dialog);
    dialog.setCancelable(true);
    ListView lv=(ListView)dialog.findViewById(R.id.listView1);
    PackageManager pm=getPackageManager();

    List<ResolveInfo> launchables=pm.queryIntentActivityOptions(
this.getComponentName(),new Intent[]{takePicture},
photoPickerIntent,0);

    Collections.sort(launchables,
            new ResolveInfo.DisplayNameComparator(pm));

    appAdapter=new AppAdapter(pm, launchables);

    lv.setAdapter(adapter);
    lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> arg0, View arg1, int position,
                                long arg3) {
            // TODO Auto-generated method stub
            ResolveInfo launchable=appAdapter.getItem(position);
            ActivityInfo activity=launchable.activityInfo;
            ComponentName name=new ComponentName(activity.applicationInfo.packageName,
                    activity.name);
            //I DON'T KNOW WHAT TO DO NEXT OR WHETHER AM DOING IT
             THE CORRECT WAY
        }
    });

    dialog.show();
}

class AppAdapter extends ArrayAdapter<ResolveInfo> {
    private PackageManager pm=null;

    AppAdapter(PackageManager pm, List<ResolveInfo> apps) {
        super(Custom_chooser.this, R.layout.row, apps);
        this.pm=pm;
    }

    @Override
    public View getView(int position, View convertView,
                        ViewGroup parent) {
        if (convertView==null) {
            convertView=newView(parent);
        }

        bindView(position, convertView);

        return(convertView);
    }

    private View newView(ViewGroup parent) {
        return(getLayoutInflater().inflate(R.layout.row, parent, false));
    }

    private void bindView(int position, View row) {
        TextView label=(TextView)row.findViewById(R.id.label);

        label.setText(getItem(position).loadLabel(pm));

        ImageView icon=(ImageView)row.findViewById(R.id.icon);

        icon.setImageDrawable(getItem(position).loadIcon(pm));
    }
}

结果（空对话框）

编辑

 List<ResolveInfo> launchables=pm.queryIntentActivityOptions(
this.getComponentName(),new Intent[]{takePicture},
photoPickerIntent,0);

Answer 1

希望如果我是正确的，您正在寻找类似下面的内容，请参考屏幕截图。在单个对话框中打开相机和浏览文件选项。

 // Picks Camera first.
final List<Intent> cameraIntents = new ArrayList<Intent>();
final Intent captureIntent = new Intent(
        android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
final PackageManager packageManager = getPackageManager();
final List<ResolveInfo> listCam = packageManager.queryIntentActivities(
        captureIntent, 0);
for (ResolveInfo res : listCam) {
  final String packageName = res.activityInfo.packageName;
  final Intent intent = new Intent(captureIntent);
  intent.setComponent(new ComponentName(res.activityInfo.packageName,
          res.activityInfo.name));
  intent.setPackage(packageName);
  intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
  cameraIntents.add(intent);
}

final Intent galleryIntent = new Intent();
galleryIntent.setType("image/*");
galleryIntent.setAction(Intent.ACTION_PICK);

// Chooser of filesystem options.
final Intent chooserIntent = Intent.createChooser(galleryIntent,
        "Select Image from");

// Add the camera options.
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS,
        cameraIntents.toArray(new Parcelable[]{}));

startActivityForResult(chooserIntent, TAKE_PHOTO_CODE);

这对你有帮助。!!

]

2

Tutorial for how to work with camera

Tutorial for how to browse and select file from the storage.

Selecting image from internal storage

Answer 2

您没有在列表视图中传递正确的适配器

您的代码

 List<ResolveInfo> launchables=pm.queryIntentActivityOptions(
 this.getComponentName(),new Intent[]{takePicture},
 photoPickerIntent,0);

Collections.sort(launchables,
        new ResolveInfo.DisplayNameComparator(pm));

appAdapter=new AppAdapter(pm, launchables);

lv.setAdapter(adapter);

正确的方法

List<ResolveInfo> launchables=pm.queryIntentActivityOptions(
 this.getComponentName(),new Intent[]{takePicture},
 photoPickerIntent,0);

Collections.sort(launchables,
        new ResolveInfo.DisplayNameComparator(pm));

appAdapter=new AppAdapter(pm, launchables);

lv.setAdapter(appAdapter);

注意区别

lv.setAdapter(appAdapter);

结果

queryIntentActivityOptions 不工作

queryIntentActivityOptions not working

android

android-intent

android-package-managers

android-dialog