使用代码找出应用的包名和startActivity

有时候我们需要在一个应用开启另一个应用,需要传入包名和应用的startActivity,但是又不知道包名和应用名,这里提供代码查找的方式,其他方式请自行google或百度.

    StringBuilder sb = new StringBuilder();    Intent intent = new Intent(Intent.ACTION_MAIN, null);    intent.addCategory(Intent.CATEGORY_LAUNCHER);    List<ResolveInfo> packageInfos = getPackageManager().queryIntentActivities(intent, 0);    for (int i = 0; i < packageInfos.size(); i++) {        String launcherActivityName = packageInfos.get(i).activityInfo.name;        String packageName = packageInfos.get(i).activityInfo.packageName;        Log.i("appappinfo", i + " -- launcherActivityName: " + launcherActivityName);        Log.e("appappinfo", i + " -- packageName: " + packageName);        sb.append(packageName).append("\n").append(launcherActivityName).append("\n");    }

在这里我只是打印了出来,拿到包名和startActivity就可以启动另一个应用,随便贴出启动代码

    Intent intent = new Intent();    ComponentName comp = new ComponentName(packageName,launcherActivityName );    intent.setComponent(comp);    intent.setAction("android.intent.action.MAIN");    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);    startActivity(intent);

需要替换这里的packageName和launcherActivityName.