Code Fragment-Android在其他线程可以使用方法在UI线程执行UI相关

方法便是activity.runOnUiThread

activity.runOnUiThread(new Runnable() {
    public void run() {
        new AlertDialog.Builder(activity)
            .setIcon(android.R.drawable.ic_dialog_alert)
            .setTitle(R.string.error_state)
            .setMessage(msg + "\n\n" + activity.getString(R.string.error_state_text))
            .setPositiveButton(R.string.yes, new OnClickListener() {
               public void onClick(DialogInterface dialog, int which) {
                   dialog.dismiss();
               }
             })
            .show();
    }
});