Android学习第二十天----PopupWindow应用

package com.will.popupwindow;

import android.os.Bundle;
import android.app.Activity;
import android.graphics.drawable.BitmapDrawable;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.GridView;
import android.widget.PopupWindow;

public class MainActivity extends Activity {
    private Button mButton;
    private PopupWindow popupWindow;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mButton = (Button)findViewById(R.id.button1);
    
    View view = new PopActivity(this);
                    
    popupWindow = new PopupWindow(view, ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.WRAP_CONTENT);
    popupWindow.setFocusable(true);
    popupWindow.setBackgroundDrawable(new BitmapDrawable());
    mButton.setOnClickListener(new OnClickListener() {
        
        @Override
        public void onClick(View v) {
        popupWindow.showAtLocation(v, Gravity.BOTTOM, 0, 0);
        }
    });
    }
}

package com.will.popupwindow;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

public class PopActivity extends LinearLayout {
    
    private Context context;
    
    public PopActivity(Context context){
    super(context);
    this.context = context;
    onCreate();
    }
    private String[] name = { "信息", "电话", "通讯录", "设置", "更多" };
    private GridView mGridView;

    protected void onCreate() {
    View view = View.inflate(context, R.layout.popclick, null);
    mGridView = (GridView) view.findViewById(R.id.gridView1);

    mGridView.setAdapter(new MyAdapter());
    
    this.addView(view, new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));

    }

    private class MyAdapter extends BaseAdapter {

    @Override
    public int getCount() {
        return 5;
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        LayoutInflater inflater = LayoutInflater.from(context);
        View view = inflater.inflate(R.layout.popclick_gr, null);
        TextView textview = (TextView) view.findViewById(R.id.textView1);
        ImageView image = (ImageView) view.findViewById(R.id.imageView1);
        textview.setText(name[position]);
        view.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                Toast.makeText(context, "hello", Toast.LENGTH_SHORT).show();
            }
        });
        return view;
    }

    }
}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:id="@+id/main" >

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="146dp"
        android:text="点我" />

</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="#fff000" >
    <GridView
        android:id="@+id/gridView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:numColumns="3" >
    </GridView>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center" />

</LinearLayout>