Android实现渐显按钮的左右滑动效果

来源:互联网 发布:第一学历 知乎 编辑:程序博客网 时间:2024/03/29 08:40

本示例演示在Android中实现带渐显按钮的左右滑动效果。

关于滑动效果,在我的上一篇博文中提到过,有兴趣的朋友可以访问: http://www.cnblogs.com/hanyonglu/archive/2012/02/13/2349827.html

如果大家想实现带指引效果的左右滑动,请访问博文:http://www.cnblogs.com/hanyonglu/archive/2012/04/07/2435589.html

先看下运行效果:

程序结构:

MainActivity文件中代码:


package com.android.buttonpageflipper;import android.app.Activity;import android.graphics.PixelFormat;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.Gravity;import android.view.MotionEvent;import android.view.View;import android.view.WindowManager;import android.view.WindowManager.LayoutParams;import android.widget.ImageView;import android.widget.ViewFlipper;/*** Android实现带渐显按钮的左右滑动效果* 自然状态下按钮不可见,触摸屏幕时显示按钮* @author Administrator**/public class MainActivityextends Activity {//声明两个按钮,分别代表向左和向右滑动private ImageView btnLeft=null;private ImageView btnRight=null;//设置WindowManagerprivate WindowManager wm=null;private WindowManager.LayoutParams wmParams=null;//ImageView的alpha值private int mAlpha = 0;private boolean isHide;private ViewFlipper viewFlipper = null;/** Called when the activity is first created.*/@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);setTitle("Android实现渐显按钮的左右滑动效果");viewFlipper = (ViewFlipper) this.findViewById(R.id.myViewFlipper);//初始化左右按钮initImageButtonView();}/*** 初始化悬浮按钮*/private void initImageButtonView(){//获取WindowManagerwm=(WindowManager)getApplicationContext().getSystemService("window");//设置LayoutParams相关参数wmParams = new WindowManager.LayoutParams();//设置window typewmParams.type=LayoutParams.TYPE_PHONE; //设置图片格式,效果为背景透明wmParams.format=PixelFormat.RGBA_8888; //设置Window flag参数wmParams.flags=LayoutParams.FLAG_NOT_TOUCH_MODAL | LayoutParams.FLAG_NOT_FOCUSABLE;//设置x、y初始值wmParams.x=0;wmParams.y=0;//设置窗口长宽数据wmParams.width=50;wmParams.height=50;//创建左右按钮createLeftButtonView();createRightButtonView();}/*** 设置左边按钮*/private void createLeftButtonView(){btnLeft=new ImageView(this);btnLeft.setImageResource(R.drawable.left);btnLeft.setAlpha(0);btnLeft.setOnClickListener(new View.OnClickListener() {public void onClick(View arg0) {//上一个图像viewFlipper.setInAnimation(MainActivity.this, R.anim.push_left_in);viewFlipper.setOutAnimation(MainActivity.this, R.anim.push_left_out);viewFlipper.showPrevious();}});//调整窗口wmParams.gravity=Gravity.LEFT|Gravity.CENTER_VERTICAL;//显示图像wm.addView(btnLeft, wmParams);}/*** 设置右边按钮*/private void createRightButtonView(){btnRight=new ImageView(this);btnRight.setImageResource(R.drawable.right);btnRight.setAlpha(0);btnRight.setOnClickListener(new View.OnClickListener() {public void onClick(View arg0) {//下一个图像viewFlipper.setInAnimation(MainActivity.this, R.anim.push_right_in);viewFlipper.setOutAnimation(MainActivity.this, R.anim.push_right_out);viewFlipper.showNext();}});//调整窗口wmParams.gravity=Gravity.RIGHT|Gravity.CENTER_VERTICAL;//显示图像wm.addView(btnRight, wmParams);}/*** 设置按钮渐显效果*/private Handler mHandler = new Handler(){public void handleMessage(Message msg) {if(msg.what==1 && mAlpha<255){ //通过设置不透明度设置按钮的渐显效果mAlpha += 50;if(mAlpha>255)mAlpha=255;btnLeft.setAlpha(mAlpha);btnLeft.invalidate();btnRight.setAlpha(mAlpha);btnRight.invalidate();if(!isHide && mAlpha<255)mHandler.sendEmptyMessageDelayed(1, 100);}else if(msg.what==0 && mAlpha>0){mAlpha -= 10;if(mAlpha<0)mAlpha=0;btnLeft.setAlpha(mAlpha);btnLeft.invalidate();btnRight.setAlpha(mAlpha);btnRight.invalidate();if(isHide && mAlpha>0)mHandler.sendEmptyMessageDelayed(0, 800);} }};private void showImageButtonView(){isHide = false;mHandler.sendEmptyMessage(1);}private void hideImageButtonView(){new Thread(){public void run() {try {Thread.sleep(1500);isHide = true;mHandler.sendEmptyMessage(0);} catch (Exception e) {;}}}.start();}@Overridepublic boolean onTouchEvent(MotionEvent event) {switch (event.getAction()) {case MotionEvent.ACTION_MOVE:case MotionEvent.ACTION_DOWN:showImageButtonView(); break;case MotionEvent.ACTION_UP:hideImageButtonView(); break;}return true;}@Overridepublic void onDestroy(){super.onDestroy();//在程序退出(Activity销毁)时销毁窗口wm.removeView(btnLeft);wm.removeView(btnRight);}}


复制代码

main.xml文件中代码:

复制代码
<?xml version="1.0" encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical"><ViewFlipperandroid:id="@+id/myViewFlipper"android:layout_width="fill_parent"android:layout_height="fill_parent"><!-- 第一个页面--><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:gravity="center"><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/one"android:gravity="center"/></LinearLayout><!-- 第二个页面--><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:gravity="center"><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/two"android:gravity="center"/></LinearLayout><!-- 第三个页面--><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:gravity="center"><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/three"android:gravity="center"/></LinearLayout><!-- 第四个页面--><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:gravity="center"><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/four"android:gravity="center"/></LinearLayout><!-- 第五个页面--><LinearLayoutandroid:layout_width="fill_parent"android:layout_height="fill_parent"android:gravity="center"><ImageViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:src="@drawable/five"android:gravity="center"/></LinearLayout></ViewFlipper></LinearLayout>



push_left_in.xml文件中代码:


<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"><translateandroid: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文件中代码:


<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"><translateandroid: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文件中代码:

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"><translateandroid: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文件中代码:

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android"><translateandroid:fromXDelta="0" android:toXDelta="100%p"android:duration="500"/><alpha android:fromAlpha="1.0" android:toAlpha="0.1"android:duration="500"/></set>




最后,别忘记了在配置文件中设置权限。

转载地址:http://www.cnblogs.com/hanyonglu/archive/2012/02/13/2350171.html 
原创粉丝点击