学步园

推荐方法

1、         

    //全部程序包

private void queryFilterAppInfo() {  

PackageManager pm = this.getPackageManager();  

// 查询所有已经安装的应用程序  

List<ApplicationInfo> listAppcations = pm.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES);// GET_UNINSTALLED_PACKAGES代表已删除，但还有安装目录的

for (ApplicationInfo app : listAppcations) {  

AppInfo appInfo = new AppInfo();  

appInfo.setAppLabel((String) app.loadLabel(pm));  

appInfo.setAppIcon(app.loadIcon(pm));  

appInfo.setPkgName(app.packageName);

mlistAppInfo.add(appInfo);   

}  

       

    } 

   

2、   

   // 获得所有系统的

public void querySysAppInfo() {  

PackageManager pm = this.getPackageManager();

Intent intent = new Intent(Intent.ACTION_MAIN, null);  

intent.addCategory(Intent.CATEGORY_LAUNCHER);  

// 通过查询，获得所有ResolveInfo对象.  

List<ResolveInfo> resolveInfos = pm.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);  

 

for (ResolveInfo reInfo : resolveInfos) {  

String activityName = reInfo.activityInfo.name; // 获得该应用程序的启动Activity的name  

String pkgName = reInfo.activityInfo.packageName; // 获得应用程序的包名  

String appLabel = (String) reInfo.loadLabel(pm); // 获得应用程序的Label  

Drawable icon = reInfo.loadIcon(pm); // 获得应用程序图标  

System.out.println(appLabel + " activityName---" + activityName  

+ " pkgName---" + pkgName);  

}        

       

    } 

3、     //最简单的方法   

public  boolean appIsInstalled(String packageName){

try {

PackageManager pm = this.getPackageManager();

pm.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES);

System.out.println("已安装"+packageName);

} catch (NameNotFoundException e) {

System.out.println("没有安装"+packageName);

return false;

}

return true;

}

4、// 获得所有包信息

   

public void getInstallPackage() {

PackageManager packageManager = this.getPackageManager();

List<PackageInfo>        packageInfoList=packageManager.getInstalledPackages(0);

mlistAppInfo.clear();  

            for (int i=0;i<packageInfoList.size();i++) { 

            PackageInfo pi = packageInfoList.get(i);

            System.out.println((i+1)+":"+pi.toString());

            }  

}

5、        //直接启动方法

public  void srartApp(String packageName){

    Intent intent = this.getPackageManager().getLaunchIntentForPackage(packageName);

    if(intent!=null)

    //已安装包 直接启动

    startActivity(intent);

}