Android处理UI控件事件

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布局文件

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:id="@+id/screen"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical"><TextView android:id="@+id/text1"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_gravity="center"android:textSize="24sp"android:text="@string/text1" /><Button android:id="@+id/button1"android:layout_width="80sp"android:layout_height="wrap_content"android:layout_gravity="center"android:text="@string/red"/><Button android:id="@+id/button2"android:layout_width="80sp"android:layout_height="wrap_content"android:layout_gravity="center"android:text="@string/green"/></LinearLayout>

MainActivity.java

package com.android.basicapp;import android.app.Activity;import android.os.Bundle;import android.graphics.Color;import android.widget.Button;import android.widget.TextView;import android.view.View;import android.view.View.OnClickListener;import android.util.Log;public class TestEvent1 extends Activity {private static final String TAG = "TestEvent1";public TestEvent1() {}@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.testevent);final TextView Text = (TextView) findViewById(R.id.text1); // 获得句柄final Button Button1 = (Button) findViewById(R.id.button1);final Button Button2 = (Button) findViewById(R.id.button2);Button1.setOnClickListener(new OnClickListener() { // 实现行为功能public void onClick(View v) {Text.setBackgroundColor(Color.RED);}});Button2.setOnClickListener(new OnClickListener() {public void onClick(View v) {Text.setBackgroundColor(Color.GREEN);}});}}

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