插件化-开启另外应用的activity

1、清单文件

android:sharedUserId="com.zyh.tplugin"

2、视图

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
     android:id="@+id/ll"
     tools:context=".MainActivity" >

 </LinearLayout>

3、java代码

 package com.itheimazyh.testplugin;

 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;

 import android.os.Bundle;
 import android.app.Activity;
 import android.content.Intent;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.graphics.Color;
 import android.view.Menu;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.Button;
 import android.widget.LinearLayout;
 import android.widget.Toast;

 public class MainActivity extends Activity {
     private LinearLayout ll;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);

         ll = (LinearLayout) findViewById(R.id.ll);

         List<Map<String, Object>> plugins = new ArrayList<Map<String, Object>>();
         plugins = findPlugins();
         if(plugins.size() > 0){
             attachPlugin(plugins);
         }else{
             Toast.makeText(this, "没有相应的插件", 1).show();
         }

     }
     private void attachPlugin(List<Map<String, Object>> plugins) {
         if(plugins.size() > 0){
             for(Map<String, Object> map : plugins){
                 Button button = new Button(this);
                 button.setTextColor(Color.RED);
                 String label = (String) map.get("label");
                 final String pkgName = (String) map.get("pkgName");
                 button.setText(label);

                 ll.addView(button);
                 button.setOnClickListener(new OnClickListener() {
                     @Override
                     public void onClick(View v) {
                         Intent intent = new Intent();
                         intent.setAction(pkgName);
                         startActivity(intent);
                     }
                 });
             }
         }
     }
     private List<Map<String, Object>> findPlugins() {
         List<Map<String, Object>> plugins = new ArrayList<Map<String, Object>>();
         //包管理器
         PackageManager pm = this.getPackageManager();
         List<PackageInfo> installPackages = pm.getInstalledPackages(PackageManager.GET_UNINSTALLED_PACKAGES);//获取所有安装的package包
         for(PackageInfo info : installPackages){
             String pkgName = info.packageName;
             String sharedUserId = info.sharedUserId;
             if(sharedUserId == null || !sharedUserId.equals("com.zyh.tplugin") || pkgName.endsWith(this.getPackageName())){
                 continue;
             }

             String label = (String) pm.getApplicationLabel(info.applicationInfo);

             Map<String, Object> map = new HashMap<String, Object>();
             map.put("label", label);
             map.put("pkgName", pkgName);
             plugins.add(map);
         }
         return plugins;
     }

 }