Android Studio 应用程序管理功能思路与代码
来源：互联网 发布：编程的那些事儿(10 编辑：程序博客网 时间：2024/06/03 13:47
程序管理功能：
点击按钮进入程序管理页面，在onCreate方法中绑定app_manager界面，因为该页面内有ListView，所以还需要一个app_item页面进行设置列表，因为点击列表对象需要弹出自定义卸载、打开、分享按钮的对话框，所以还要一个popup_window，layout所以总共需要三个。分别如下
<?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="match_parent"> <TextView android:id="@+id/tv_title" style="@style/text_title_style" android:text="所 有 程 序" android:layout_alignParentTop="true" android:layout_alignParentStart="true" android:layout_marginTop="17dp" /> <View style="@style/view_divide_line_style" android:layout_alignBottom="@id/tv_title" android:layout_alignParentStart="true" /> <FrameLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_below="@+id/tv_title" android:layout_alignParentStart="true" android:layout_marginTop="15dp"> <ListView android:id="@+id/lv_appmanage" android:layout_width="fill_parent" android:layout_height="fill_parent" android:cacheColorHint="#00000000" android:divider="#fff" android:fastScrollEnabled="true" android:dividerHeight="1.0dip" android:paddingLeft="3.0dip" android:paddingRight="3.0dip" /> <RelativeLayout android:id="@+id/rl_loading" android:layout_width="fill_parent" android:layout_height="fill_parent" > <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" android:layout_centerInParent="true"> <ProgressBar android:id="@+id/pb" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="10dip" android:text="正在加载应用程序。。" android:textColor="#fff" android:textSize="22sp" /> </LinearLayout> </RelativeLayout> </FrameLayout></RelativeLayout><?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" android:orientation="horizontal" android:paddingBottom="8.0dip" android:paddingLeft="6.0dip" android:paddingRight="5.0dip" android:paddingTop="8.0dip" > <ImageView android:id="@+id/iv_appicon" android:layout_width="45dip" android:layout_height="45dip" android:layout_centerVertical="true" android:src="@mipmap/ic_launcher" /> <TextView android:id="@+id/tv_appname" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true" android:layout_marginLeft="4.0dip" android:layout_toRightOf="@id/iv_appicon" android:textColor="#fff" android:text="程序名称" android:textSize="16.0dip" /> <TextView android:id="@+id/tv_appversion" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:layout_centerVertical="true" android:layout_marginLeft="4.0dip" android:textColor="#fff" android:layout_marginRight="10dp" android:text="1.0" android:textSize="16.0dip" /></RelativeLayout><?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:id="@+id/ll_popup_window" android:layout_height="wrap_content" android:background="@drawable/local_popup_bg" android:orientation="horizontal"> <LinearLayout android:id="@+id/ll_uninstall" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="15dip" android:layout_marginRight="15dip" android:layout_gravity="center_vertical" android:orientation="vertical" > <ImageView android:layout_width="35dip" android:layout_height="35dip" android:src="@drawable/img1" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="卸载" android:layout_gravity="center" android:textColor="#fff" android:textSize="12sp" /> </LinearLayout> <View android:layout_width="1dip" android:layout_height="fill_parent" android:background="@drawable/local_popup_divider" /> <LinearLayout android:id="@+id/ll_start" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginLeft="15dip" android:layout_marginRight="15dip" android:orientation="vertical" > <ImageView android:layout_width="35dip" android:layout_height="35dip" android:src="@drawable/img2" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="启动" android:layout_gravity="center" android:textColor="#fff" android:textSize="12sp" /> </LinearLayout> <View android:layout_width="1dip" android:layout_height="fill_parent" android:background="@drawable/local_popup_divider" /> <LinearLayout android:id="@+id/ll_share" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_vertical" android:layout_marginLeft="15dip" android:layout_marginRight="15dip" android:orientation="vertical" > <ImageView android:layout_width="35dip" android:layout_height="35dip" android:src="@drawable/img3" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="分享" android:layout_gravity="center" android:textColor="#fff" android:textSize="12sp" /> </LinearLayout></LinearLayout>接下里由于需要每个应用程序的各个数据对象，所以需要一个AppInfo类
public class AppInfo { private Drawable app_icon; private String app_name; private String app_version; private String packagename; private boolean isUserApp; public AppInfo() { super(); // TODO Auto-generated constructor stub } public AppInfo(Drawable app_icon, String app_name, String app_version, String packagename) { super(); this.app_icon = app_icon; this.app_name = app_name; this.app_version = app_version; this.packagename = packagename; } public AppInfo(Drawable app_icon, String app_name, String app_version,String packagename, boolean isUserApp) { super(); this.app_icon = app_icon; this.app_name = app_name; this.app_version = app_version; this.packagename = packagename; this.isUserApp = isUserApp; } public Drawable getApp_icon() { return app_icon; } public void setApp_icon(Drawable app_icon) { this.app_icon = app_icon; } public String getApp_name() { return app_name; } public void setApp_name(String app_name) { this.app_name = app_name; } public String getApp_version() { return app_version; } public void setApp_version(String app_version){ this.app_version = app_version; } public String getPackagename() { return packagename; } public void setPackagename(String packagename) { this.packagename = packagename; } public boolean isUserApp() { return isUserApp; } public void setUserApp(boolean isUserApp) { this.isUserApp = isUserApp; } @Override public String toString() { return "AppInfo [app_icon=" + app_icon + ", app_name=" + app_name+ ", app_version=" + app_version + ", packagename="+ packagename + ", isUserApp=" + isUserApp + "]"; } }因为是ListView，所以需要一个适配器来绑定列表内容
public class AppManageAdapter extends BaseAdapter { private Context context; private LayoutInflater mInflater; private List<AppInfo> appInfos; public void setAppInfos(List<AppInfo> appInfos) { this.appInfos = appInfos; } public AppManageAdapter(Context context, List<AppInfo> appInfos){ this.context = context; this.appInfos = appInfos; mInflater = LayoutInflater.from(context); } @Override public int getCount() { return appInfos.size(); } @Override public Object getItem(int position) { return appInfos.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { /* * 1.得到控件 * 2.得到数据 * 3.绑定数据 * */ View view = null; if (convertView != null){ view = convertView; }else{ view = mInflater.inflate(R.layout.app__item,null); } ImageView iv_appicon = (ImageView) view.findViewById(R.id.iv_appicon); TextView tv_appname = (TextView) view.findViewById(R.id.tv_appname); TextView tv_appversion = (TextView) view.findViewById(R.id.tv_appversion); AppInfo appInfo = appInfos.get(position); iv_appicon.setImageDrawable(appInfo.getApp_icon()); tv_appname.setText(appInfo.getApp_name()); tv_appversion.setText(appInfo.getApp_version()); return view; }}接下来就是AppManager里面的工作了，在onCreate方法中调用initData方法来进行列表加载更新，当没有加载出来时，中心显示进度条和正在加载，之后定义一个线程，生成一个AppInfo类型的泛型集合AppInfos，再写一个AppInfoService类，里面专门写获取应用程序信息和给AppInfos填充数据的方法，由于我们有个功能是点击标题更换程序类型显示，所以在该类中再写一个方法用来判断是否是用户程序。这时候在线程中就可以去分类用户程序和系统程序了。接下来就是判断程序信息是否加载完成了，所以用到了Handler，然后在handleMessage中判断接收到的信息，当加载完成时隐藏进度条和中心文字，这时显示事件基本完成，剩下的就是点击反馈内容了，类来继承OnItemClickListener，重写onItemClickfangfa，点击显示自定义对话框，通过ScaleAnimation类添加动画，然后给卸载、启动、分享三个按钮绑定监听器，进行点击反馈。下面就是服务类和主页面类
public class AppInfoService { private Context context; private PackageManager packageManager; public AppInfoService(Context context){ this.context = context; packageManager = context.getPackageManager(); } //得到所有的应用程序 public List<AppInfo> getAppInfos(){ List<AppInfo> appInfos = new ArrayList<AppInfo>(); List<ApplicationInfo> applicationInfos = packageManager.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES); for(ApplicationInfo info:applicationInfos){ AppInfo appInfo = new AppInfo(); Drawable app_icon = info.loadIcon(packageManager); appInfo.setApp_icon(app_icon); String app_name = info.loadLabel(packageManager).toString(); appInfo.setApp_name(app_name); String packageName = info.packageName; appInfo.setPackagename(packageName); try { PackageInfo packageInfo = packageManager.getPackageInfo(packageName,0); String app_version = packageInfo.versionName; appInfo.setApp_version(app_version); } catch (Exception e) { e.printStackTrace(); } boolean isUserApp = filterApp(info); appInfo.setUserApp(isUserApp); appInfos.add(appInfo); } return appInfos; } //判断应用程序是否是用户程序 public boolean filterApp(ApplicationInfo info) { //原来是系统应用，用户手动升级 if ((info.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0) { return true; //用户自己安装的应用程序 } else if ((info.flags & ApplicationInfo.FLAG_SYSTEM) == 0) { return true; } return false; }}public class AppManager extends Activity implements View.OnClickListener { protected static final int SUCCESS_GET_APPLICATION = 0; private RelativeLayout rl_loading; private ListView lv_appmanage; private PackageManager packageManager; private AppInfoService appInfoService; private List<AppInfo> appInfos; private List<AppInfo> userAppInfos; private boolean isAllApp = true; private AppManageAdapter mAdapter; private TextView tv_title; private PopupWindow mPopupWindow; private Handler mHandler = new Handler(){ @Override public void handleMessage(Message msg) { switch (msg.what){ case SUCCESS_GET_APPLICATION: if(mAdapter != null){ if(isAllApp){ mAdapter.setAppInfos(appInfos); }else{ mAdapter.setAppInfos(userAppInfos); } mAdapter.notifyDataSetChanged(); rl_loading.setVisibility(View.GONE); }else{ //给Listview绑定数据，隐藏加载的进度条 mAdapter = new AppManageAdapter(getApplicationContext(),appInfos); lv_appmanage.setAdapter(mAdapter); /*setVisibility方法中可以放置三个参数 1.View.GONE控件消失不占控件 2.View.INVISIBLE 控件消失占据空间 3.View.VISIBLE控件显示*/ rl_loading.setVisibility(View.GONE); } break; default: break; } } }; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.app_manager); rl_loading = (RelativeLayout) findViewById(R.id.rl_loading); lv_appmanage = (ListView) findViewById(R.id.lv_appmanage); tv_title = (TextView) findViewById(R.id.tv_title); tv_title.setOnClickListener(this); appInfoService = new AppInfoService(this); //得到包管理器 packageManager = getPackageManager(); initData(); //给ListView绑定项目点击监听器 lv_appmanage.setOnItemClickListener(new MyOnItemClickListener()); } private void initData(){ rl_loading.setVisibility(View.VISIBLE); new Thread(){ public void run() { appInfos = appInfoService.getAppInfos(); userAppInfos = new ArrayList<AppInfo>(); for(AppInfo appInfo:appInfos){ if(appInfo.isUserApp()){ userAppInfos.add(appInfo); } } Message msg = new Message(); msg.what = SUCCESS_GET_APPLICATION; mHandler.sendMessage(msg); }; }.start(); } private final class MyOnItemClickListener implements AdapterView.OnItemClickListener{ @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { View contentView = View.inflate(getApplicationContext(), R.layout.popup_window, null); LinearLayout ll_uninstall = (LinearLayout) contentView.findViewById(R.id.ll_uninstall); LinearLayout ll_start = (LinearLayout) contentView.findViewById(R.id.ll_start); LinearLayout ll_share = (LinearLayout) contentView.findViewById(R.id.ll_share); LinearLayout ll_popup_window = (LinearLayout) contentView.findViewById(R.id.ll_popup_window); //动画效果，前四个数据是设置对话框大小，后四个数据设置动画样式 ScaleAnimation animation = new ScaleAnimation(0, 1.0f, 0, 1.0f, Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF, 0.5f); animation.setDuration(200); ll_popup_window.startAnimation(animation); MyOnClickListener l = new MyOnClickListener(position); ll_uninstall.setOnClickListener(l); ll_start.setOnClickListener(l); ll_share.setOnClickListener(l); mPopupWindow = new PopupWindow(contentView, ViewGroup.LayoutParams.WRAP_CONTENT, DensityUtil.px2dip(getApplicationContext(),68)); int[] arrayOfInt = new int[2]; view.getLocationInWindow(arrayOfInt); int x = arrayOfInt[0] + DensityUtil.px2dip(getApplicationContext(), 150); int y = arrayOfInt[1]; //1 指定popupwindow的背景 2 popupwindow能够获得焦点 mPopupWindow.setBackgroundDrawable(new BitmapDrawable()); mPopupWindow.setFocusable(true); mPopupWindow.showAtLocation(view, Gravity.LEFT|Gravity.TOP, x, y); } } private final class MyOnClickListener implements View.OnClickListener { private int position; public MyOnClickListener(int position) { this.position = position; } public void onClick(View v) { AppInfo appInfo = (AppInfo) mAdapter.getItem(position); String packageName = appInfo.getPackagename(); int id = v.getId(); switch (id) { case R.id.ll_uninstall: //系统应用不能被卸载 if(!appInfo.isUserApp()){ Toast.makeText(getApplicationContext(), "系统应用不能被卸载", Toast.LENGTH_SHORT).show(); }else{ //自身不能被卸载 if(packageName.equals(getPackageName())){ Toast.makeText(getApplicationContext(), "自身应用不能被卸载", Toast.LENGTH_SHORT).show(); }else{ Intent uninstall_intent = new Intent(); uninstall_intent.setAction(Intent.ACTION_DELETE); uninstall_intent.setData(Uri.parse("package:" + packageName)); //startActivity(uninstall_intent); startActivityForResult(uninstall_intent, 100); } } break; case R.id.ll_start: try { PackageInfo packgeInfo = packageManager.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES); ActivityInfo[] activites = packgeInfo.activities; if(activites == null || activites.length == 0){ Toast.makeText(getApplicationContext(), "该应用程序不能被启动", Toast.LENGTH_SHORT).show(); }else{ ActivityInfo activityInfo = activites[0]; String name = activityInfo.name; ComponentName component = new ComponentName(packageName, name); Intent start_intent = new Intent(); start_intent.setComponent(component); startActivity(start_intent); } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); Toast.makeText(getApplicationContext(), "该应用程序不能被启动", Toast.LENGTH_SHORT).show(); } break; case R.id.ll_share: Intent share_intent = new Intent(); share_intent.setAction(Intent.ACTION_SEND); share_intent.setType("text/plain"); share_intent.putExtra(Intent.EXTRA_SUBJECT, "f分享"); share_intent.putExtra(Intent.EXTRA_TEXT, "HI 推荐您使用一款软件：" + appInfo.getApp_name()); share_intent = Intent.createChooser(share_intent, "分享"); startActivity(share_intent); break; default: break; } mPopupWindow.dismiss(); } } //因为卸载完反馈的是100，所以用此方法来进行列表更新 @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { // TODO Auto-generated method stub super.onActivityResult(requestCode, resultCode, data); if(requestCode == 100){ initData(); } } @Override public void onClick(View v) { int id = v.getId(); switch(id){ case R.id.tv_title: if (isAllApp){ mAdapter.setAppInfos(userAppInfos); mAdapter.notifyDataSetChanged(); tv_title.setText("用 户 程 序"); isAllApp = false; }else { mAdapter.setAppInfos(appInfos); mAdapter.notifyDataSetChanged(); tv_title.setText("所 有 程 序"); isAllApp = true; } break; default: break; } }}最后不要忘了在AndroidMainifest中进行注册。
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