android获取手机已经安装的app信息
16lz
2021-01-23
Android获取手机已安装APP（系统/非系统）
效果图
主体代码
private ListView mlistview; private List packageInfoList; private List applicationInfoList; private MyAdapter myAdapter; private PackageManager pm; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main3); mlistview=findViewById(R.id.mlistview); getAllAppNames(); myAdapter=new MyAdapter(applicationInfoList); mlistview.setAdapter(myAdapter); myAdapter.notifyDataSetChanged(); mlistview.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { doStartApplicationWithPackageName(applicationInfoList.get(position).getPackageName()); } }); }//自定义适配器 public class MyAdapter extends BaseAdapter{ private List list; public MyAdapter(List list){ this.list=list; } @Override public int getCount() { return list.size(); } @Override public Object getItem(int position) { return list.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { View view=null; if(convertView==null){ view=LayoutInflater.from(Main3Activity.this).inflate(R.layout.mlistview_layout,null); }else{ view=convertView; } TextView tv_packagename=view.findViewById(R.id.tv_packagename); TextView tv_appname=view.findViewById(R.id.tv_appname); ImageView img=view.findViewById(R.id.img); tv_appname.setText(list.get(position).getName()); tv_packagename.setText(list.get(position).getPackageName()); img.setImageDrawable(list.get(position).getIcon()); return view; } } public void getAllAppNames(){ pm=getPackageManager(); ////获取到所有安装了的应用程序的信息，包括那些卸载了的，但没有清除数据的应用程序// packageInfoList=pm.getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES); applicationInfoList=new ArrayList<>(); List list = pm.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES); Collections.sort(list, new ApplicationInfo.DisplayNameComparator(pm));// 排序 Log.e("-------",list.size()+""); applicationInfoList.clear(); for (int i=0;i resolveinfoList = getPackageManager() .queryIntentActivities(resolveIntent, 0); if(resolveinfoList.size() == 0){ return; } ResolveInfo resolveinfo = resolveinfoList.iterator().next(); if (resolveinfo != null) { String packageName = resolveinfo.activityInfo.packageName; //App启动的Activity String className = resolveinfo.activityInfo.name; // LAUNCHER Intent Intent intent = new Intent(Intent.ACTION_MAIN); intent.addCategory(Intent.CATEGORY_LAUNCHER); // 设置ComponentName参数1:packagename参数2:启动的Activity ComponentName cn = new ComponentName(packageName, className); intent.setComponent(cn); startActivity(intent); } } // 构造一个AppInfo对象 ，并赋值 private AppInfo getAppInfo(ApplicationInfo app) { AppInfo appInfo = new AppInfo(); appInfo.setName(app.loadLabel(pm).toString()); appInfo.setIcon(app.loadIcon(pm)); appInfo.setPackageName(app.packageName); return appInfo; } 这里是定义的实体bean
public class AppInfo implements Serializable{ /** 序列号 */ private static final long serialVersionUID = -6660233212727684115L; /** 名称 */ public String name; /** (路径) */ public String path; /** 图标 */ public Drawable icon; /** 包名 */ public String packageName; public static long getSerialVersionUID() { return serialVersionUID; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPath() { return path; } public void setPath(String path) { this.path = path; } public Drawable getIcon() { return icon; } public void setIcon(Drawable icon) { this.icon = icon; } public String getPackageName() { return packageName; } public void setPackageName(String packageName) { this.packageName = packageName; }}这里是mlistview_layout.xml的布局代码
<?xml version="1.0" encoding="utf-8"?> mlistview_layout.xml布局效果图
这里是activity_main3.xml布局代码
<?xml version="1.0" encoding="utf-8"?> activity_main3.xml效果图
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