最终效果:

 设计

 

实现java代码:

//获取包列表
    private List<String> getPkgList() {
        List<String> packages = new ArrayList<String>();
        try {
            //使用命令行方式获取包列表
            Process p = Runtime.getRuntime().exec("pm list packages");
            //取得命令行输出内容写入流
            InputStreamReader isr = new InputStreamReader(p.getInputStream(), "utf-8");
            //读取流
            BufferedReader br = new BufferedReader(isr);
            //读取行
            String line = br.readLine();
            //遍历包列表
            while (line != null) {
                line = line.trim();
                if (line.length() > 8) {
                    String prefix = line.substring(0, 8);
                    if (prefix.equalsIgnoreCase("package:")) {
                        line = line.substring(8).trim();
                        if (!TextUtils.isEmpty(line)) {
                            //添加到列表
                            packages.add(line);
                        }
                    }
                }
                line = br.readLine();//读取下一行
            }
            br.close();//关闭流
            p.destroy();//消毁进程
        } catch (Throwable t) {
            System.out.println("读取包列表出错");
        }
        return packages;//返回包列表
    }

    //使用系统API获取安装包列表
    private List<String> getPkgListWithSysApi() {
        List<String> packages = new ArrayList<String>();
        try {
            //取包信息列表
            List<PackageInfo> packageInfos = this.getApplicationContext().getPackageManager().getInstalledPackages(
                    PackageManager.GET_ACTIVITIES | PackageManager.GET_SERVICES);
            //遍历包列表
            for (PackageInfo info : packageInfos) {
                //取包名
                String pkg = info.packageName;
                //添加到列表
                packages.add(pkg);
            }
        } catch (Throwable t) {
            t.printStackTrace();;
        }
        return packages;
    }

 

调用:

 StringBuilder sb = new StringBuilder();
        //遍历包列表中包名
        for (String v:getPkgList()
             ) {
            System.out.println("包名:"+v);
            sb.append("包名:"+v+"\n");//添加包名到字符串
        }
        tv.setText(sb.toString());//显示到文本控件中

显示 :