Question

我的OnClickListener不起作用。 MyCode是：

public class ReportAboutProblem extends ActionBarActivity implements View.OnClickListener{
public final int CAMERA_RESULT = 0;
GridView gridView;
Button btnAddPhoto;
ArrayList<Bitmap> myImages;

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.report_about_problem_activity);
    getSupportActionBar().setBackgroundDrawable(new ColorDrawable(Color.parseColor("#85abc4")));
    getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);
    btnAddPhoto=(Button)findViewById(R.id.btn_add_photo);
    btnAddPhoto.setOnClickListener(this);
    gridView = (GridView) findViewById(R.id.grid_new);
    myImages=new ArrayList<Bitmap>();
    myImages.add(BitmapFactory.decodeResource(getResources(),
            R.drawable.ic_launcher));
    gridView.setOnItemClickListener(mItemClickListener);
    gridView.setAdapter(new CustomGridAdapter(this, myImages));

}
private AdapterView.OnItemClickListener mItemClickListener = new AdapterView.OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int pos, long id) {

        Toast.makeText(ReportAboutProblem.this, "You have clicked on item '"  + "'", Toast.LENGTH_SHORT).show();
    }
};
@Override
public void onClick(View v) {
    Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    startActivityForResult(cameraIntent, CAMERA_RESULT);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == CAMERA_RESULT) {
        Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
        myImages.add(thumbnail);
        gridView.setOnItemClickListener(mItemClickListener);
        gridView.setAdapter(new CustomGridAdapter(this, myImages));

    }
}
}

我的适配器是：

public class CustomGridAdapter extends BaseAdapter {

private Context context;
//private final String[] gridValues;
ArrayList<Bitmap> arrayList;
ImageButton i1;

//Constructor to initialize values
public CustomGridAdapter(Context context, ArrayList<Bitmap> ob) {
    arrayList = ob;
    this.context = context;
    // this.gridValues     = gridValues;
}

@Override
public int getCount() {

    // Number of times getView method call depends upon gridValues.length
    return arrayList.size();
}

@Override
public Object getItem(int position) {

    return null;
}

@Override
public long getItemId(int position) {

    return 0;
}


// Number of times getView method call depends upon gridValues.length

public View getView( int position,  View convertView,  ViewGroup parent) {
    final int pos = position;

    Log.d("myLogs","position="+position);
    // LayoutInflator to call external grid_item.xml file

    LayoutInflater inflater = (LayoutInflater) context
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    View gridView;
    if (convertView == null) {
        gridView = new View(context);
        gridView = inflater.inflate(R.layout.grid_item, null);
        ImageView imageView = (ImageView) gridView
                .findViewById(R.id.grid_item_image);
        Log.d("myLogs","Set image "+position+" image "+arrayList.get(position));
        imageView.setImageBitmap(arrayList.get(position));
    } else {

        gridView = (View) convertView;
    }

    return gridView;
}
}

自定义gridView元素是：

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
          android:layout_width="100dp"
          android:layout_height="100dp"
          android:padding="5dp" >

<ImageView
        android:id="@+id/grid_item_image"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:layout_marginRight="10px"
        android:src="@drawable/ic_launcher" android:layout_alignParentLeft="true" android:layout_marginLeft="4dp"
        android:layout_alignParentTop="true" android:layout_marginTop="4dp">

</ImageView>

<ImageButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/imageButton" android:src="@android:drawable/ic_delete"
        android:background="@android:color/transparent"
        android:paddingLeft="10dp"
        android:layout_alignParentRight="true" android:layout_alignParentTop="true"/>

Answer 1

使用imageView代替ImageButton它将运行..

[这个问题的解决方案是;

不要在网格中使用可点击的对象。那种情况下Android无法处理网格的点击事件。

而是使用某些东西来显示类似的用户界面视图。处理该对象单击操作。

假;将按钮放在网格中以执行一些单击操作。

真;放置一个imageview而不是imagebutton并处理imageview的点击事件。] 1

或

放这些

android:focusable="false" android:focusableInTouchMode="false"

到你的ImageButton。

Answer 2

尝试使用android:descendantFocusability="blocksDescendants"，当单击列表项时，ImageButton会消耗焦点。

网格视图setOnItemClickListener不起作用

2 个答案: