Android 组件化跳转核心方法

前名一个参数是应用程序的包名,后一个是这个应用程序的主Activity名  
 Intent intent=new Intent();  
 intent.setComponent(new ComponentName("com.droidnova.android.games.vortex",   
                                                     "com.droidnova.android.games.vortex.Vortex"));  
 startActivity(intent); 

这里第一个参数放包名也可以,放上下文也可以

其中包名和activity全路径的获取方法:

 public static void initRouter(Context context) {
        ActivityInfo[] activityInfos = null;
        List activityNames = new ArrayList<>();
        PackageManager packageManager = context.getPackageManager();
        try {
            PackageInfo packageInfo = packageManager.getPackageInfo(context.getPackageName(), PackageManager.GET_ACTIVITIES);
            //当前项目中所有activity的全路径集合
            activityInfos = packageInfo.activities;
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        if (activityInfos != null) {
            for (ActivityInfo activityInfo : activityInfos) {
                activityNames.add(activityInfo.name);
            }
        }
        for (String activityName : activityNames) {
            String[] splitStr = activityName.split("\.");
            routerMap.put(splitStr[splitStr.length - 1], activityName);
        }
    }