调用所有的 android activity 的实现

Intent intent = new Intent(Intent.ACTION_SEARCH);

intent.putExtra("query", "Android");

intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

startActivity(intent);

03-11 16:06:41.561: INFO/ActivityManager(4924): Starting activity: Intent { act=android.intent.action.SEARCH flg=0x10000000 cmp=android/com.android.internal.app.ResolverActivity (has extras) }

会列出ResolverActivity,然后可以指定跳转到哪个activity