从意图将图像设置为列表视图

Question

我有包含图像和文本的列表视图，我可以调用图库意图 onClick。

这里是我的自定义行：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content" >

    <ImageView
            android:id="@+id/icon"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="4px"
            android:layout_marginRight="10px"
            android:layout_marginTop="4px"
            android:src="@drawable/ic_launcher" >
    </ImageView>

    <TextView
            android:id="@+id/label"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@+id/label" >
    </TextView>

</LinearLayout>

及主要代码：

public class MyActivity extends ListActivity {

    private ListView lv;
    private ArrayList<String> itemArray;
    private ArrayAdapter<String> itemAdapter;

    //new gallery intent privates
    private static final int SELECT_PICTURE = 1;
    private String selectedImagePath;

    public void onCreate(Bundle icicle) {
        super.onCreate(icicle);

        itemArray = new ArrayList<String>();
        itemArray.clear();

        itemAdapter = new ArrayAdapter<String>(this, R.layout.row, R.id.label, itemArray);
        setListAdapter(itemAdapter);

    }

    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (resultCode == RESULT_OK) {
            if (requestCode == SELECT_PICTURE) {
                Uri selectedImageUri = data.getData();
                selectedImagePath = getPath(selectedImageUri);
                Toast.makeText(this, selectedImagePath, Toast.LENGTH_SHORT).show();
            }
        }
    }

    public String getPath(Uri uri) {
        if( uri == null ) {
            return null;
        }
        String[] projection = { MediaStore.Images.Media.DATA };
        Cursor cursor = managedQuery(uri, projection, null, null, null);
        if( cursor != null ){
            int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
            cursor.moveToFirst();
            return cursor.getString(column_index);
        }
        return uri.getPath();
    }

    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        String item = (String) getListAdapter().getItem(position);
        Toast.makeText(this, item + " selected", Toast.LENGTH_LONG).show();

        // select a file
        Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent, "Select Picture"), SELECT_PICTURE);
    }

    protected void addItemList() {
        // TODO Auto-generated method stub
        itemArray.add(0,"step");
        itemAdapter.notifyDataSetChanged();
    }


    // menu options
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // TODO Auto-generated method stub
        menu.add("add");
        return super.onCreateOptionsMenu(menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // TODO Auto-generated method stub
        addItemList();
        Toast.makeText(this, "test", Toast.LENGTH_SHORT).show();
        return super.onOptionsItemSelected(item);
    }

}

如何将选定的图像设置为单击的列表项 imageView？找不到任何解决方案如何连接它们/ （如果我知道它们的目录，我知道如何加载图像（我在这里不需要它），但我不知道如何在意图之后设置它们）

Answer 1

将以下代码粘贴到您的 onActivityResult 方法中：

        if (requestCode == PICK_FROM_GALLERY) {
            if (resultCode != RESULT_CANCELED) {
                Bundle extras = data.getExtras();
                if (extras != null) {
                photo = extras.getParcelable("data");
                photo.setImageBitmap(photo);                
            }
         }
      }