接口方式監聽按鈕點擊事件,是對的嗎?謝謝。。。
package com.example.outonclick7_30;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageButton;
import android.os.Build;
public class MainActivity extends ActionBarActivity?? implements OnClickListener {
??? private static final OnClickListener Listener = null;
?? ?private Button loginbutton;
??? private ImageButton imgBt;
?? ?
?? ?
??? @Override
??? protected void onCreate(Bundle savedInstanceState) {
??????? super.onCreate(savedInstanceState);
??????? setContentView(R.layout.activity_main);
??????? loginbutton=(Button) findViewById(R.id.button1);
??????? imgBt=(ImageButton) findViewById(R.id.imageButton1);
?????? ?
????? ?
??????? loginbutton.setOnClickListener(Listener);
??????? imgBt.setOnClickListener(this);
?? ?
??? }
??? OnClickListener listener=new OnClickListener() {
?? ??? ?
?? ??? ?@Override
?? ??? ?public void onClick(View v) {
?? ??? ??? ?// TODO Auto-generated method stub
?? ??? ??? ?Log.i("tag", "被觸發了");
?? ??? ?}
?? ?};
??? /* {
?? ??? ??? ?
?? ??? ??? ?@Override
?? ??? ??? ?public void onClick(View arg0) {
?? ??? ??? ??? ?// TODO Auto-generated method stub
?? ??? ??? ??? ?System.out.print("可以了");
?? ??? ??? ?}
?? ??? ?});
??????? */
?? ?@Override
?? ?public void onClick(View v) {
?? ??? ?// TODO Auto-generated method stub
?? ??? ?Log.i("tag", "第三種打印方式");
?? ?}
}
2017-08-04
不對,loginbutton.setOnClickListener(Listener);? 這句代碼會報錯,Listener為NULL,不能直接使用;