android获取手机已经安装的app信息

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

mlistview_layout.xml布局效果图

这里是activity_main3.xml布局代码

activity_main3.xml效果图