Android PopupWindow底部菜单

 

import java.util.Timer; 
import java.util.TimerTask; 
  
import android.app.Activity; 
import android.content.Context; 
import android.os.Bundle; 
import android.os.Handler; 
import android.os.Message; 
import android.view.Gravity; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup.LayoutParams; 
import android.widget.PopupWindow; 
  
public class MainActivity extends Activity { 
    private Handler handler = new Handler() { 
        public void handleMessage(Message msg) { 
            switch (msg.arg1) { 
            case 1: 
                showBottomMenu(); 
                break; 
            } 
        } 
    }; 
  
    @Override
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.main); 
  
        Timer timer = new Timer(); 
        timer.schedule(new initBottomMenu(), 100); 
    } 
  
    private class initBottomMenu extends TimerTask { 
        @Override
        public void run() { 
            Message msg = new Message(); 
            msg.arg1 = 1; 
            handler.sendMessage(msg); 
        } 
    } 
  
    /** 
     * 显示底部菜单 
     */
    public void showBottomMenu() { 
        LayoutInflater mLayoutInfalter = (LayoutInflater) this
                .getSystemService(LAYOUT_INFLATER_SERVICE); 
        View menuView = mLayoutInfalter.inflate(R.layout.menu, null); 
        PopupWindow mPopupWindow = new PopupWindow(menuView, 
                LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT); 
  
        mPopupWindow.showAtLocation(findViewById(R.id.main), Gravity.BOTTOM, 0, 
                0); 
    } 
}

主界面的布局文件：main.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/main" 
    android:orientation="vertical"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"> 
    <TextView 
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" 
        android:text="底部菜单实例" 
        /> 
</LinearLayout>

底部菜单的布局文件：menu.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"
    android:orientation="horizontal" 
    android:background="@drawable/menu_back"> 
    <Button 
        android:id="@+id/menu_ensureButton"
        android:layout_width="160px" 
        android:layout_height="wrap_content"
        android:layout_marginTop="5px" 
        android:text="完成" 
        /> 
    <Button 
        android:id="@+id/menu_cancelButton"
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content"
        android:layout_marginTop="5px" 
        android:text="取消" 
        /> 
</LinearLayout>