本文实例讲述了Android编程单击图片实现切换效果的方法。分享给大家供大家参考,具体如下:
新建一个Android项目,命名为FrameLayout
此实例主要操作src文件夹下的MainActivity.Java类文件和res/layout下的activity_main.xml布局文件
1.布局主页面代码activity_main.xml↓
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="#897753" > <ImageView android:id="@+id/image1" android:layout_width="fill_parent" android:layout_height="fill_parent" android:visibility="visible" android:src="@drawable/a"/> <ImageView android:id="@+id/image2" android:visibility="invisible" android:layout_width="fill_parent" android:layout_height="fill_parent" android:src="@drawable/b"/> <ImageView android:id="@+id/image3" android:visibility="invisible" android:layout_width="fill_parent" android:layout_height="fill_parent" android:src="@drawable/c"/> </FrameLayout>
2.Java代码MainActivity.Java↓
package com.example.framelayout; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.view.Menu; import android.view.MotionEvent; import android.view.View; import android.widget.ImageView; public class MainActivity extends Activity { private String TAG = "FramLayoutTestActivity"; private ImageView image1; private ImageView image2; private ImageView image3; private List<ImageView> list; private int count = 0; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); image1 = (ImageView) findViewById(R.id.image1); image2 = (ImageView) findViewById(R.id.image2); image3 = (ImageView) findViewById(R.id.image3); list = new ArrayList<ImageView>(); list.add(image1); list.add(image2); list.add(image3); } @Override public boolean onTouchEvent(MotionEvent event) { // TODO Auto-generated method stub if (event.getAction() == MotionEvent.ACTION_DOWN) { Log.i(TAG, "move---"); showImage(); } return super.onTouchEvent(event); } private void showImage() { //image1.setVisibility(View.VISIBLE); count = count % 3; for (ImageView i : list) { i.setVisibility(View.INVISIBLE); } list.get(count).setVisibility(View.VISIBLE); count++; } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } }
3.使用Android模拟器或者连接Android智能手机运行项目,点击程序界面,图片自动切换。
ps: activity_main.xml文件中几个ImageView中的src链接图片需要从外部复制到项目中的res/drawable目录下
希望本文所述对大家Android程序设计有所帮助。