Android Material Design：ListPopupWindow

落日映苍穹つ 2024-02-17 16:16 44阅读 0赞

**Android Material Design：ListPopupWindow**

Android Material Design引入的ListPopupWindow，首先是一个PopupWindow，不过此PopupWindow内嵌一个List，给予此List设置一个Adapter，就相当Android为开发者做好了一个内置ListView的PopupWindows。

如图所示：

![Center][]

给出上述效果的代码实现：

package zhangphil.materialdesign;
    
    import android.app.Activity;
    import android.os.Bundle;
    import android.support.v7.widget.ListPopupWindow;
    import android.view.View;
    import android.widget.AdapterView;
    import android.widget.ArrayAdapter;
    import android.widget.Button;
    import android.widget.Toast;
    
    public class MainActivity extends Activity {
    
    	@Override
    	protected void onCreate(Bundle savedInstanceState) {
    		super.onCreate(savedInstanceState);
    		setContentView(R.layout.activity_main);
    
    		final Button button = (Button) findViewById(R.id.button);
    		button.setOnClickListener(new View.OnClickListener() {
    
    			@Override
    			public void onClick(View v) {
    				showListPopupWindow(button);
    			}
    		});
    	}
    
    	public void showListPopupWindow(View view) {
    		String items[] = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9" };
    		ListPopupWindow listPopupWindow = new ListPopupWindow(this);
    
    		// ListView适配器
    		listPopupWindow.setAdapter(
    				new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1, items));
    
    		// 选择item的监听事件
    		listPopupWindow.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    			@Override
    			public void onItemClick(AdapterView<?> parent, View view, int pos, long id) {
    				Toast.makeText(getApplicationContext(), "选择:" + pos, Toast.LENGTH_SHORT).show();
    				// listPopupWindow.dismiss();
    			}
    		});
    
    		// 对话框的宽高
    		listPopupWindow.setWidth(500);
    		listPopupWindow.setHeight(600);
    
    		// ListPopupWindow的锚,弹出框的位置是相对当前View的位置
    		listPopupWindow.setAnchorView(view);
    
    		// ListPopupWindow 距锚view的距离
    		listPopupWindow.setHorizontalOffset(50);
    		listPopupWindow.setVerticalOffset(100);
    
    		listPopupWindow.setModal(false);
    
    		listPopupWindow.show();
    	}
    }

activity\_main.xml只是一个仅仅含有一个Button的布局，Button用于触发、弹出ListPopupWindow，不在此赘述。

[Center]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/30/4fd7d4c8fa5349f589227899cc6c453a.png