Android4.0开发学习之ImageButton

来源：互联网发布：数据预处理的内容编辑：程序博客网时间：2024/06/10 18:00

今天我们来学习一下Android4.0开发当中用到的ImageButton,实际运行效果如下:

当点击ImageButton按钮时，按钮的背景颜色改变，并且提示点击了XX按钮。

界面布局XML文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <ImageButton        android:id="@+id/imagebutton_call"    android:layout_width="70dip"    android:layout_height="50dip"    android:layout_gravity="center"    android:background="@drawable/imagebutton_item_bg"    android:src="@android:drawable/sym_action_call" />        <View  android:layout_width="match_parent" android:layout_height="3dip"/>       <ImageButton       android:id="@+id/imagebutton_chat"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_gravity="center"    android:background="@drawable/imagebutton_item_bg"    android:src="@android:drawable/sym_action_chat" />        <View  android:layout_width="match_parent" android:layout_height="3dip"/>       <ImageButton       android:id="@+id/imagebutton_email"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_gravity="center"    android:background="@drawable/imagebutton_item_bg"    android:src="@android:drawable/sym_action_email" /></LinearLayout>

Drawable按钮背景选择器imagebutton_item_bg.xml

<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android">    <item android:state_pressed="true" android:drawable="@android:color/holo_red_light" />    <item android:state_focused="true" android:drawable="@android:color/holo_red_light" />    <item android:state_enabled="true" android:drawable="@android:color/background_dark" /></selector>

点击按钮提示的具体实现代码如下：

import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.ImageButton;import android.widget.Toast;public class MainActivity extends Activity {private ImageButton imagebutton_call,imagebutton_chat,imagebutton_email;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);imagebutton_call  = (ImageButton) findViewById(R.id.imagebutton_call);imagebutton_chat  = (ImageButton) findViewById(R.id.imagebutton_chat);imagebutton_email  = (ImageButton) findViewById(R.id.imagebutton_email);imagebutton_call.setOnClickListener(clickListener);imagebutton_chat.setOnClickListener(clickListener);imagebutton_email.setOnClickListener(clickListener);}private OnClickListener clickListener = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.imagebutton_call:Toast.makeText(MainActivity.this, "你点击了打电话ImageButton!", Toast.LENGTH_SHORT).show();break;case R.id.imagebutton_chat:Toast.makeText(MainActivity.this, "你点击了打短信聊天ImageButton!", Toast.LENGTH_SHORT).show();break;case R.id.imagebutton_email:Toast.makeText(MainActivity.this, "你点击了电子邮件ImageButton!", Toast.LENGTH_SHORT).show();break;}}};}

具体的项目实现代码已经上传我的下载资源，大家可以去下载，谢谢支持！

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