Question

我有一个活动（MainActivity），它调用第二个Activity（ImageAndTextAdapter）来显示listview。我希望能够单击每个列表项以打开新活动。但是我不知道如何正确实现setOnItemClickListener函数。我尝试了很多不同的方法。任何帮助将不胜感激。

MainActivity：

public class MainActivity extends ListActivity {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    Context ctx = getApplicationContext();
Resources res = ctx.getResources();

String[] options = res.getStringArray(R.array.country_names);
TypedArray icons = res.obtainTypedArray(R.array.country_icons);

setListAdapter(new ImageAndTextAdapter(ctx, R.layout.main_list_item, options, icons));
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;}


    }

ImageAndTextAdapter.java：

public class ImageAndTextAdapter extends ArrayAdapter<String> {

private LayoutInflater mInflater;

private String[] mStrings;
private TypedArray mIcons;

private int mViewResourceId;

public ImageAndTextAdapter(Context ctx, int viewResourceId,
    String[] strings, TypedArray icons) {
super(ctx, viewResourceId, strings);

mInflater = (LayoutInflater)ctx.getSystemService(
        Context.LAYOUT_INFLATER_SERVICE);

mStrings = strings;
mIcons = icons;

mViewResourceId = viewResourceId;
}

@Override
public int getCount() {
return mStrings.length;
}

@Override
public String getItem(int position) {
return mStrings[position];
}

@Override
public long getItemId(int position) {
return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
convertView = mInflater.inflate(mViewResourceId, null);

ImageView iv = (ImageView)convertView.findViewById(R.id.option_icon);
iv.setImageDrawable(mIcons.getDrawable(position));

TextView tv = (TextView)convertView.findViewById(R.id.option_text);
tv.setText(mStrings[position]);

return convertView;
}
}

XML文件：

<resources>
<string-array name="country_names">
    <item>Columbia</item>
    <item>Peru</item>
    <item>Argentina</item>
 </string-array>
<array name="country_icons">
    <item>@drawable/Columbia</item>
    <item>@drawable/Peru</item>
    <item>@drawable/Argentina</item>
</array>
</resources>

Answer 1

在onCreate（）方法中，在setListAdapter(new ImageAndTextAdapter(ctx, R.layout.main_list_item, options, icons));之后，使用：

getListView().setOnItemClickListener(new OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position,
            long id) {
        // Handle your click here as you want

    }
});

如何为listView实现onclicklistener

1 个答案: