本文實例總結了Android開發之Button事件實現與監聽方法。分享給大家供大家參考，具體如下：
先來介紹Button事件實現的兩種方法
main.xml
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<?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=" 按鈕1 " android:layout_width="wrap_content" android:layout_height="wrap_content" /><Button android:id="@+id/myButton2" android:text=" 按鈕2 " android:layout_width="wrap_content" android:layout_height="wrap_content" /></LinearLayout> |
strings.xml
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<?xml version="1.0" encoding="utf-8"?><resources> <string name="hello">Hello World, ButtonDemoActivity!</string> <string name="app_name">ButtonDemo</string></resources> |
第一種：
ButtonDemoActivity.java：
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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); //使用匿名類注冊Button事件 myButton1.setOnClickListener(new OnClickListener() { public void onClick(View v) { Toast.makeText(ButtonDemoActivity.this, "你點擊了按鈕1",Toast.LENGTH_LONG).show(); } }); myButton2.setOnClickListener(new OnClickListener() { public void onClick(View v) { Toast.makeText(ButtonDemoActivity.this, "你點擊了按鈕2",Toast.LENGTH_LONG).show(); } }); }} |
第二種：
ButtonDemoActivity.java：
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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()); } //創建一個類，來響應OnClickListener class ButtonClick implements OnClickListener { public void onClick(View v) { switch (v.getId()) { case R.id.myButton1: Toast.makeText(ButtonDemoActivity.this, "你點擊了按鈕1",Toast.LENGTH_LONG).show(); break; case R.id.myButton2: Toast.makeText(ButtonDemoActivity.this, "你點擊了按鈕2",Toast.LENGTH_LONG).show(); break; default: break; } } }} |
再來說說Button監聽方法
android button控件目前主要有如下幾種監聽方式:
一個button控件對應一個監聽:
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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"); }}); |
多個button對應一個監聽1:
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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; } }}; |
多個button對應一個監聽2:
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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中綁定監聽:
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<Buttonandroid:id="@+id/button1"android:layout_height="wrap_content"android:layout_width="wrap_content"android:onClick="mybuttonlistener"></Button> |
對應java代碼如下:
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Button btn = (Button) findViewById(R.id.button1);public void mybuttonlistener(View target){ //do something5} |
從個人角度來講，不推薦使用第四種實現方式。
希望本文所述對大家Android程序設計有所幫助。
