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ViewFlipper的简单用法
ViewFlipper和ViewPager挺像的，都是一个view容器。内部可以添加多个view，只是viewpager可以通过左右滑动来切换view，而viewFlipper则没有这个功能，所以需要在它上面监听手势。比较方便的是它不用使用适配器就能添加view，所以比较方便。
首先在布局文件中定义这个控件：
<?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" android:background="#ffffff"> <ViewFlipper android:id="@+id/ViewFlipper01" android:layout_width="match_parent" android:layout_height="match_parent"/> </LinearLayout>
2.在代码中找到并且添加view
@Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); detector = new GestureDetector(this); flipper = (ViewFlipper) this.findViewById(R.id.ViewFlipper01); flipper.addView(addTextView("page 1"));//添加view到flipper中，这里添加5个textView flipper.addView(addTextView("page 2")); flipper.addView(addTextView("page 3")); flipper.addView(addTextView("page 4")); flipper.addView(addTextView("page 5")); }/** * @param text * @return 一个textView对象 */ private View addTextView(String text) { TextView tv = new TextView(this); tv.setText(text); tv.setTextSize(40); tv.setTextColor(0xff000000); tv.setGravity(Gravity.CENTER); return tv; }
3.通过touch监听手势来切换view
@Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { if (e1.getX() - e2.getX() > 120) { this.flipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_in)); this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_out)); this.flipper.showNext();//切换到下一个view return true; } else if (e1.getX() - e2.getX() < -120) { this.flipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_in)); this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_out)); this.flipper.showPrevious(); return true; } return false; }
下面是Activity的完整代码：
package com.xu81.testflip;import android.app.Activity;import android.app.ActivityManager.RecentTaskInfo;import android.os.Bundle;import android.view.GestureDetector;import android.view.Gravity;import android.view.MotionEvent;import android.view.View;import android.view.GestureDetector.OnGestureListener;import android.view.animation.AnimationUtils;import android.widget.TextView;import android.widget.ViewFlipper;public class TestFlip extends Activity implements OnGestureListener { private ViewFlipper flipper; private GestureDetector detector; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); detector = new GestureDetector(this); flipper = (ViewFlipper) this.findViewById(R.id.ViewFlipper01); flipper.addView(addTextView("page 1"));//添加view到flipper中，这里添加5个textView flipper.addView(addTextView("page 2")); flipper.addView(addTextView("page 3")); flipper.addView(addTextView("page 4")); flipper.addView(addTextView("page 5")); } /** * @param text * @return 一个textView对象 */ private View addTextView(String text) { TextView tv = new TextView(this); tv.setText(text); tv.setTextSize(40); tv.setTextColor(0xff000000); tv.setGravity(Gravity.CENTER); return tv; } @Override public boolean onTouchEvent(MotionEvent event) { return this.detector.onTouchEvent(event); } @Override public boolean onDown(MotionEvent e) { // TODO Auto-generated method stub return false; } @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { if (e1.getX() - e2.getX() > 120) { this.flipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_in)); this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_left_out)); this.flipper.showNext();//切换到下一个view return true; } else if (e1.getX() - e2.getX() < -120) { this.flipper.setInAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_in)); this.flipper.setOutAnimation(AnimationUtils.loadAnimation(this, R.anim.push_right_out)); this.flipper.showPrevious(); return true; } return false; } @Override public void onLongPress(MotionEvent e) { // TODO 自动生成的方法存根 } @Override public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { // TODO 自动生成的方法存根 return false; } @Override public void onShowPress(MotionEvent e) { // TODO 自动生成的方法存根 } @Override public boolean onSingleTapUp(MotionEvent e) { // TODO 自动生成的方法存根 return false; }}
动画文件：
push_left_in.xml
<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"> <translate android:fromXDelta="100%p" android:toXDelta="0" android:duration="500" /> <alpha android:fromAlpha="0.1" android:toAlpha="1.0" android:duration="500" /></set>
push_left_out.xml
<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"> <translate android:fromXDelta="0" android:toXDelta="-100%p" android:duration="500" /> <alpha android:fromAlpha="1.0" android:toAlpha="0.1" android:duration="500" /></set>
push_right_in.xml
<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"> <translate android:fromXDelta="-100%p" android:toXDelta="0" android:duration="500" /> <alpha android:fromAlpha="0.1" android:toAlpha="1.0" android:duration="500" /></set>
push_right_out.xml
<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"> <translate android:fromXDelta="0" android:toXDelta="100%p" android:duration="500" /> <alpha android:fromAlpha="1.0" android:toAlpha="0.1" android:duration="500" /></set>
源码下载：http://download.csdn.net/detail/shark0017/7962673
ViewFlipper的简单用法
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