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Android开发之Button事件实现与监听方法总结

2019年07月24日  | 移动技术网IT编程  | 我要评论

九个故事,神乐坂四季,陈改户

本文实例总结了android开发之button事件实现与监听方法。分享给大家供大家参考，具体如下：

先来介绍button事件实现的两种方法

main.xml

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:orientation="vertical"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 >
<textview
 android:layout_width="fill_parent"
 android:layout_height="wrap_content"
 android:text="@string/hello"
 />
<button
 android:id="@+id/mybutton1"
 android:text=" 按钮1 "
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 />
<button
 android:id="@+id/mybutton2"
 android:text=" 按钮2 "
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 />
</linearlayout>

strings.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
 <string name="hello">hello world, buttondemoactivity!</string>
 <string name="app_name">buttondemo</string>
</resources>

第一种：

buttondemoactivity.java：

package com.android.buttondemo.activity;
import android.app.activity;
import android.os.bundle;
import android.view.view;
import android.view.view.onclicklistener;
import android.widget.button;
import android.widget.toast;
public class buttondemoactivity extends activity {
 button mybutton1,mybutton2;
 @override
 public void oncreate(bundle savedinstancestate) {
  super.oncreate(savedinstancestate);
  setcontentview(r.layout.main);
  mybutton1=(button)findviewbyid(r.id.mybutton1);
  mybutton2=(button)findviewbyid(r.id.mybutton2);
  //使用匿名类注册button事件
  mybutton1.setonclicklistener(new onclicklistener()
  {
   public void onclick(view v)
   {
    toast.maketext(buttondemoactivity.this, "你点击了按钮1",toast.length_long).show();
   }
  });
  mybutton2.setonclicklistener(new onclicklistener()
  {
   public void onclick(view v)
   {
    toast.maketext(buttondemoactivity.this, "你点击了按钮2",toast.length_long).show();
   }
  });
 }
}

第二种：

buttondemoactivity.java：

package com.android.buttondemo.activity;
import android.app.activity;
import android.os.bundle;
import android.view.view;
import android.view.view.onclicklistener;
import android.widget.button;
import android.widget.toast;
public class buttondemoactivity extends activity {
 button mybutton1,mybutton2;
 @override
 public void oncreate(bundle savedinstancestate) {
  super.oncreate(savedinstancestate);
  setcontentview(r.layout.main);
  mybutton1=(button)findviewbyid(r.id.mybutton1);
  mybutton2=(button)findviewbyid(r.id.mybutton2);
  mybutton1.setonclicklistener(new buttonclick());
  mybutton2.setonclicklistener(new buttonclick());
 }
 //创建一个类，来响应onclicklistener
 class buttonclick implements onclicklistener
 {
  public void onclick(view v)
  {
   switch (v.getid()) {
   case r.id.mybutton1:
    toast.maketext(buttondemoactivity.this, "你点击了按钮1",toast.length_long).show();
    break;
   case r.id.mybutton2:
    toast.maketext(buttondemoactivity.this, "你点击了按钮2",toast.length_long).show();
    break;
   default:
    break;
   }
  }
 }
}

再来说说button监听方法

android button控件目前主要有如下几种监听方式:

一个button控件对应一个监听:

button buttontest;
buttontest = (button) findviewbyid(r.id.button1);
buttontest.setonclicklistener(new view.onclicklistener() {
 @override
 public void onclick(view v) {
  // todo auto-generated method stub
  log.i("test", "button onclick");
 }
});

多个button对应一个监听1:

start = (button) findviewbyid(r.id.button1);
stop = (button) findviewbyid(r.id.button2);
start.setonclicklistener(mylistener );
stop.setonclicklistener(mylistener );
view.onclicklistener mylistener = new view.onclicklistener() {
  @override
  public void onclick(view v) {
   switch (v.getid()) {
   case r.id.button1:
    log.d(tag, "start to recorder video\n");
    start_recorde();
    break;
   case r.id.button2:
    log.d(tag, "stop to recorder video\n");
    stop_recorde();
    break;
   default:
    break;
   }
  }
};

多个button对应一个监听2:

public class mainactivity extends activity implements view.onclicklistener{
 //界面元素
 private button start;
 private button stop;
 @override
 public void oncreate(bundle savedinstancestate) {
  super.oncreate(savedinstancestate);
  setcontentview(r.layout.activity_main);
  start = (button) findviewbyid(r.id.button1);
  stop = (button) findviewbyid(r.id.button2);
  start.setonclicklistener(this);
  stop.setonclicklistener(this);
 }
 @override
 public boolean oncreateoptionsmenu(menu menu) {
  getmenuinflater().inflate(r.menu.activity_main, menu);
  return true;
 }
 @override
 public void onclick(view v) {
  switch (v.getid()) {
  case r.id.button1:
   log.d(tag, "start to recorder video\n");
   break;
  case r.id.button2:
   log.d(tag, "stop to recorder video\n");
   break;
  default:
   break;
  }
 }
}

xml中绑定监听:

<button
android:id="@+id/button1"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:onclick="mybuttonlistener">
</button>

对应java代码如下:

button btn = (button) findviewbyid(r.id.button1);
public void mybuttonlistener(view target){
 //do something5
}

从个人角度来讲，不推荐使用第四种实现方式。

希望本文所述对大家android程序设计有所帮助。

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