应用管理菜单【Android】

一、功能描述

展示手机应用信息列表

选择某个应用时, 显示PopupWindow菜单

使用9Path图片

使用selector+shape

二、相关API

PopupWindow

PopupWindow(View contentView, int width, int height)

构造方法, 指定包含的视图，宽度和高度

showAsDropDown(View anchor, int xoff, int yoff)

显示在指定视图的下面，指定视图，x轴和y轴上的偏移值

setBackgroundDrawable(Drawable background)

设置背景图片， 必须设置，不然动画没作用

boolean isShowing() 

判断是否正在显示

dismiss()

移除(显示界面上移除)

三、代码实现 

1.布局文件activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="所有应用"         android:gravity="center"        android:textSize="25sp"        android:textColor="#ffffff"        android:background="#c610ef"        android:padding="5dp"/>    <ListView        android:id="@+id/lv_main"        android:layout_width="match_parent"        android:layout_height="fill_parent" >    </ListView></LinearLayout>

2.item_main.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="wrap_content" >    <ImageView        android:id="@+id/iv_item_icon"        android:layout_width="60dp"        android:layout_height="60dp"        android:src="@drawable/ic_launcher" />    <TextView        android:id="@+id/tv_item_name"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_toRightOf="@id/iv_item_icon"        android:text="应用名"        android:layout_centerVertical="true"        android:layout_marginLeft="10dp"        android:textSize="20sp" /></RelativeLayout>

3.pw_layout.xml

<?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="80dp"    android:orientation="horizontal"    android:background="@drawable/local_popup_bg"     android:paddingLeft="20dp">    <LinearLayout        android:id="@+id/ll_pw_uninstall"        android:layout_width="0dp"        android:layout_weight="1"        android:background="@drawable/item_bg_selector"        android:layout_height="match_parent"        android:orientation="vertical"        android:gravity="center" >        <ImageView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:src="@drawable/img1" />        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="卸载"            android:textSize="16sp" />    </LinearLayout>        <View android:layout_width="1dp"        android:layout_height="fill_parent"        android:background="#00ff00"/>         <LinearLayout         android:id="@+id/ll_pw_run"        android:layout_width="0dp"        android:layout_weight="1"        android:layout_height="match_parent"        android:orientation="vertical"        android:background="@drawable/item_bg_selector"        android:gravity="center" >        <ImageView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:src="@drawable/img2" />        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="运行"            android:textSize="16sp" />    </LinearLayout>     <View android:layout_width="1dp"        android:layout_height="fill_parent"        android:background="#00ff00"/>         <LinearLayout         android:id="@+id/ll_pw_share"        android:layout_width="0dp"        android:layout_weight="1"        android:background="@drawable/item_bg_selector"        android:layout_height="match_parent"        android:orientation="vertical"        android:gravity="center" >        <ImageView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:src="@drawable/img3" />        <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="分享"            android:textSize="16sp" />    </LinearLayout></LinearLayout>

4.drawable->item_bg_selector.xml

<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android" >    <item android:state_pressed="true">        <shape >            <solid android:color="#00ffff"/>        </shape>    </item></selector>

5.AppInfo.java

package com.example.appgraphics;import android.R.drawable;import android.graphics.drawable.Drawable;public class AppInfo {private Drawable icon;private String appName;private String packageName;public AppInfo() {super();// TODO Auto-generated constructor stub}public AppInfo(Drawable icon, String appName, String packageName) {super();this.icon = icon;this.appName = appName;this.packageName = packageName;}public Drawable getIcon() {return icon;}public void setIcon(Drawable icon) {this.icon = icon;}public String getAppName() {return appName;}public void setAppName(String appName) {this.appName = appName;}public String getPackageName() {return packageName;}public void setPackageName(String packageName) {this.packageName = packageName;}@Overridepublic String toString() {return "AppInfo [icon=" + icon + ", appName=" + appName+ ", packageName=" + packageName + "]";}}

6.MainActivity.java

package com.example.appgraphics;import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.content.Intent;import android.content.pm.PackageManager;import android.content.pm.ResolveInfo;import android.graphics.drawable.BitmapDrawable;import android.graphics.drawable.Drawable;import android.os.Bundle;import android.util.Log;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.view.ViewTreeObserver.OnScrollChangedListener;import android.view.animation.ScaleAnimation;import android.widget.AbsListView;import android.widget.AbsListView.OnScrollListener;import android.widget.Adapter;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.AdapterView.OnItemLongClickListener;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.ListView;import android.widget.PopupWindow;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends Activity implements OnItemLongClickListener,OnScrollListener, OnClickListener {private ListView lv_main;private List<AppInfo> data;private AppAdapter adapter;private PopupWindow pw;private View pwView;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);lv_main = (ListView) findViewById(R.id.lv_main);data = getAllAppInfos();adapter = new AppAdapter();lv_main.setAdapter(adapter);lv_main.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {String appName = data.get(position).getAppName();// 提示// Toast.makeText(MainActivity.this, appName, 0).show();if (pw == null) {pwView = View.inflate(MainActivity.this,R.layout.pw_layout, null);// 得到子View设置点击监听pwView.findViewById(R.id.ll_pw_uninstall).setOnClickListener(MainActivity.this);pwView.findViewById(R.id.ll_pw_run).setOnClickListener(MainActivity.this);pwView.findViewById(R.id.ll_pw_share).setOnClickListener(MainActivity.this);pw = new PopupWindow(pwView, view.getWidth() - 80, view.getHeight());pw.setBackgroundDrawable(new BitmapDrawable());}// 如果正在显示， 移除if (pw.isShowing()) {pw.dismiss();// 只是不显示 了，但对象仍然在内存中}// （再）显示pw.showAsDropDown(view, 40, -view.getHeight());// 缩放动画ScaleAnimation animation = new ScaleAnimation(0, 1, 0, 1);animation.setDuration(1000);// 启动动画pwView.startAnimation(animation);}});lv_main.setOnItemLongClickListener(this);// 设置ListView的滚动监听lv_main.setOnScrollListener(this);}class AppAdapter extends BaseAdapter {@Overridepublic int getCount() {// TODO Auto-generated method stubreturn data.size();}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn data.get(position);}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn 0;}/*@Override<span style="white-space:pre"></span>public View getView(int position, View convertView, ViewGroup parent) {<span style="white-space:pre"></span>// 如果convertView是null,加载item的布局文件<span style="white-space:pre"></span>if(convertView==null){<span style="white-space:pre"></span>convertView=View.inflate(MainActivity.this, R.layout.item_main, null);<span style="white-space:pre"></span>}<span style="white-space:pre"></span>//得到当前行数据对象<span style="white-space:pre"></span>AppInfo appInfo = data.get(position);<span style="white-space:pre"></span>//得到当前行需要更新的子View对象<span style="white-space:pre"></span>ImageView imageView = (ImageView) convertView.findViewById(R.id.iv_item_icon);<span style="white-space:pre"></span>TextView textView = (TextView) convertView.findViewById(R.id.tv_item_name);<span style="white-space:pre"></span>imageView.setImageDrawable(appInfo.getIcon());<span style="white-space:pre"></span>textView.setText(appInfo.getAppName());<span style="white-space:pre"></span><span style="white-space:pre"></span>//给视图设置数据<span style="white-space:pre"></span>return convertView;<span style="white-space:pre"></span>}*/<span style="white-space:pre"></span><span style="white-space:pre"></span>@Override<span style="white-space:pre"></span>public View getView(int position, View convertView, ViewGroup parent) {//优化后的<span style="white-space:pre"></span>//1.创建或得到对应当前行的一个ViewHolder对象<span style="white-space:pre"></span>ViewHolder holder = null;<span style="white-space:pre"></span>if(convertView==null){<span style="white-space:pre"></span>Log.e("TAG", "getView()"+position);<span style="white-space:pre"></span>holder = new ViewHolder();<span style="white-space:pre"></span>convertView = View.inflate(MainActivity.this, R.layout.item_main, null);<span style="white-space:pre"></span>holder.imageView = (ImageView) convertView.findViewById(R.id.iv_item_icon);<span style="white-space:pre"></span>holder.nameTV = (TextView) convertView.findViewById(R.id.tv_item_name);<span style="white-space:pre"></span>//将holder对象保存到convertView上;<span style="white-space:pre"></span>convertView.setTag(holder);<span style="white-space:pre"></span>} else {<span style="white-space:pre"></span>holder = (ViewHolder) convertView.getTag();<span style="white-space:pre"></span>}<span style="white-space:pre"></span>//2.得到当前行的数据对象<span style="white-space:pre"></span>AppInfo appInfo = data.get(position);<span style="white-space:pre"></span>//3.给ViewHolder对象的视图设置数据<span style="white-space:pre"></span>holder.imageView.setImageDrawable(appInfo.getIcon());<span style="white-space:pre"></span>holder.nameTV.setText(appInfo.getAppName());<span style="white-space:pre"></span>return convertView;<span style="white-space:pre"></span>}<span style="white-space:pre"></span><span style="white-space:pre"></span>class ViewHolder {//视图的容器类<span style="white-space:pre"></span>public ImageView imageView;<span style="white-space:pre"></span>public TextView nameTV;<span style="white-space:pre"></span>}}protected List<AppInfo> getAllAppInfos() {List<AppInfo> list = new ArrayList<AppInfo>();PackageManager packageManager = getPackageManager();Intent intent = new Intent();intent.setAction(Intent.ACTION_MAIN);intent.addCategory(Intent.CATEGORY_LAUNCHER);List<ResolveInfo> ResolveInfos = packageManager.queryIntentActivities(intent, 0);for (ResolveInfo ri : ResolveInfos) {String packageName = ri.activityInfo.packageName;Drawable icon = ri.loadIcon(packageManager);String appName = ri.loadLabel(packageManager).toString();AppInfo appInfo = new AppInfo(icon, appName, packageName);list.add(appInfo);}return list;}@Overridepublic boolean onItemLongClick(AdapterView<?> parent, View view,int position, long id) {data.remove(position);// lv_main.setAdapter(adapter);adapter.notifyDataSetChanged();return true;}/** * SCROLL_STATE_IDLE：空闲状态 SCROLL_STATE_TOUCH_SCROLL：跟着手指滚动 * SCROLL_STATE_FLING：快速滚动 *  * 当ListView滚动状态发生改变时调用 */@Overridepublic void onScrollStateChanged(AbsListView view, int scrollState) {Log.e("TAG", "onScrollStateChanged()" + scrollState);if (scrollState == OnScrollListener.SCROLL_STATE_TOUCH_SCROLL) {// 移除正在显示的pwif (pw != null && pw.isShowing()) {pw.dismiss();}}}// 当ListView正在滚动时调用（产生move时不断调用）@Overridepublic void onScroll(AbsListView view, int firstVisibleItem,int visibleItemCount, int totalItemCount) {Log.e("TAG", "onScroll()");}@Overridepublic void onClick(View v) {pw.dismiss();switch (v.getId()) {case R.id.ll_pw_uninstall:Toast.makeText(this, "卸载", 0).show();break;case R.id.ll_pw_run:Toast.makeText(this, "运行", 0).show();break;case R.id.ll_pw_share:Toast.makeText(this, "分享", 0).show();break;default:break;}}}