利用Android的ViewFlipper和AnimationUtils實現圖片帶有動畫的輪播切換,其中當點擊“上一張”圖片時,切換到上一張圖片;當點擊“下一張”圖片時,切換到下一張圖片。其效果圖如下:
設置布局文件,其內容如下:
activity_image_flipper_shade.xml
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@drawable/background" android:paddingBottom="@dimen/activity_optopns_vertical_margin" android:paddingLeft="@dimen/activity_options_horizontal_margin" android:paddingRight="@dimen/activity_options_horizontal_margin" android:paddingTop="@dimen/activity_optopns_vertical_margin" tools:context=".ImageFlipperActivity" > <RelativeLayout android:id="@id/rl_image_flipper_shade_title" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <Button android:id="@+id/btn_image_flipper_shade_back" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_marginBottom="10dp" android:background="@drawable/custom_button" android:text="@string/back" android:textColor="@color/textColor" android:textSize="16sp" android:visibility="visible" /> <TextView android:id="@id/tv_image_flipper_shade_title" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:text="@string/image_flipper_shade" android:textColor="@color/textColor" android:textSize="30sp" android:textStyle="bold" /> </RelativeLayout> <LinearLayout android:id="@id/ll_image_flipper_shade_content" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_below="@id/rl_image_flipper_shade_title" android:layout_marginBottom="20dp" android:layout_marginTop="20dp" android:gravity="center" android:orientation="vertical" > <ViewFlipper android:id="@id/vf_image_flipper_shade" android:layout_width="match_parent" android:layout_height="match_parent" /> </LinearLayout></RelativeLayout>
動畫效果配置文件,其內容如下:
A.push_left_in.xml(從左邊進入屏幕)
<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" > <!-- translate:畫面轉換位置移動動畫效果 --> <translate android:duration="500" android:fromXDelta="100%p" android:toXDelta="0" /> <!-- alpha:漸變透明度動畫效果 --> <alpha android:duration="500" android:fromAlpha="0.1" android:toAlpha="1.0" /> <!-- scale:漸變尺寸伸縮動畫效果 --> <!-- rotate:畫面轉換位置移動動畫效果 --></set>B.push_left_out.xml(從左邊退出屏幕)<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" > <translate android:duration="500" android:fromXDelta="0" android:toXDelta="-100%p" /> <alpha android:duration="500" android:fromAlpha="1.0" android:toAlpha="0.1" /></set>C.push_right_in.xml(從右邊進入屏幕)<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" > <translate android:duration="500" android:fromXDelta="-100%p" android:toXDelta="0" /> <alpha android:duration="500" android:fromAlpha="0.1" android:toAlpha="1.0" /></set>D.push_right_out.xml(從右邊退出屏幕)<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" > <translate android:duration="500" android:fromXDelta="0" android:toXDelta="100%p" /> <alpha android:duration="500" android:fromAlpha="1.0" android:toAlpha="0.1" /></set>
實現圖片輪播切換的類為ImageFlipperShadeActivity.java,其內容為:
/** * */package com.i114gbox.aglieguy;import android.annotation.SuppressLint;import android.content.Context;import android.graphics.PixelFormat;import android.os.Bundle;import android.os.Handler;import android.view.Gravity;import android.view.MotionEvent;import android.view.View;import android.view.View.OnClickListener;import android.view.WindowManager;import android.view.WindowManager.LayoutParams;import android.view.animation.AnimationUtils;import android.widget.Button;import android.widget.ImageView;import android.widget.ViewFlipper;import com.i114gbox.sdk.activity.I114gBoxActivity;import com.i114gbox.sdk.utils.I114gBoxCollectActivityUtils;import com.i114gbox.sdk.utils.I114gBoxLogUtils;import com.i114gbox.sdk.utils.I114gBoxResourceUtils;/** * 圖片滑動漸變Activity * * @author SJC * */public class ImageFlipperShadeActivity extends I114gBoxActivity {private static String TAG = "ImageFlipperShadeActivity";private Context ctx = null;private ViewFlipper viewFlipper;// 視圖輪播private WindowManager windowManager;// 窗口管理器private WindowManager.LayoutParams layoutParams;// 布局參數private boolean isHide;private int mAlpha = 0;// 左邊圖片視圖private ImageView leftImageView;// 右邊圖片視圖private ImageView rightImageView;private int WHAT_HIDE = 0;private int WHAT_SHOW = 1;@Overrideprotected void onCreate(Bundle savedInstanceState) {I114gBoxLogUtils.d(TAG, "The onCreate method execute.");super.onCreate(savedInstanceState);I114gBoxCollectActivityUtils.getInstance().addActivity(this);// 收集Activityctx = this;setContentView(I114gBoxResourceUtils.getLayoutId(ctx,"activity_image_flipper_shade"));viewFlipper = (ViewFlipper) findViewById(I114gBoxResourceUtils.getId(ctx, "vf_image_flipper_shade"));viewFlipper.addView(addImageView(I114gBoxResourceUtils.getDrawableId(ctx, "flipper_01")));viewFlipper.addView(addImageView(I114gBoxResourceUtils.getDrawableId(ctx, "flipper_02")));viewFlipper.addView(addImageView(I114gBoxResourceUtils.getDrawableId(ctx, "flipper_03")));viewFlipper.addView(addImageView(I114gBoxResourceUtils.getDrawableId(ctx, "flipper_04")));viewFlipper.addView(addImageView(I114gBoxResourceUtils.getDrawableId(ctx, "flipper_05")));viewFlipper.addView(addImageView(I114gBoxResourceUtils.getDrawableId(ctx, "flipper_06")));Button backButton = (Button) findViewById(I114gBoxResourceUtils.getId(ctx, "btn_image_flipper_shade_back"));backButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {finish();}});initImageButtonView();// 初始化ImageButton視圖}/** 添加ImageView控件 **/private View addImageView(int id) {ImageView imageView = new ImageView(this);imageView.setImageResource(id);return imageView;}/** 初始化ImageButton視圖 **/private void initImageButtonView() {windowManager = (WindowManager) ctx.getSystemService(Context.WINDOW_SERVICE);layoutParams = new WindowManager.LayoutParams();// 設置窗口類型layoutParams.type = LayoutParams.TYPE_PHONE;// 設置圖片格式,效果為背景透明layoutParams.format = PixelFormat.RGBA_8888;// 設置FLAG參數,觸摸失效或無法獲取焦點layoutParams.flags = LayoutParams.FLAG_NOT_TOUCH_MODAL| LayoutParams.FLAG_NOT_FOCUSABLE;// 初始化話坐標值layoutParams.x = 0;layoutParams.y = 0;// 設置窗口的寬度和高度layoutParams.width = 50;layoutParams.height = 50;// 創建左邊和右邊按鈕createLeftButtonView();createRightButtonView();}/** 創建左邊按鈕 **/private void createLeftButtonView() {leftImageView = new ImageView(ctx);leftImageView.setBackgroundResource(I114gBoxResourceUtils.getDrawableId(ctx, "flipper_left"));leftImageView.setAlpha(0);// 完全透明// 添加點擊監聽事件leftImageView.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// 設置進入屏幕的動畫viewFlipper.setInAnimation(AnimationUtils.loadAnimation(ctx,I114gBoxResourceUtils.getAnimId(ctx, "push_left_in")));// 設置退出屏幕的動畫viewFlipper.setOutAnimation(AnimationUtils.loadAnimation(ctx,I114gBoxResourceUtils.getAnimId(ctx, "push_left_out")));// 顯示下一個圖層viewFlipper.showNext();}});// 設置布局為左邊垂直居中layoutParams.gravity = Gravity.LEFT | Gravity.CENTER_VERTICAL;// 將左邊按鈕添加到窗口中windowManager.addView(leftImageView, layoutParams);}/** 創建右邊按鈕 **/private void createRightButtonView() {rightImageView = new ImageView(ctx);rightImageView.setBackgroundResource(I114gBoxResourceUtils.getDrawableId(ctx, "flipper_right"));rightImageView.setAlpha(0);// 完全透明// 添加點擊監聽事件rightImageView.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// 設置進入屏幕的動畫viewFlipper.setInAnimation(AnimationUtils.loadAnimation(ctx,I114gBoxResourceUtils.getAnimId(ctx, "push_right_in")));// 設置退出屏幕的動畫viewFlipper.setOutAnimation(AnimationUtils.loadAnimation(ctx,I114gBoxResourceUtils.getAnimId(ctx, "push_right_out")));// 顯示上一個圖層viewFlipper.showPrevious();}});// 設置布局為右邊垂直居中layoutParams.gravity = Gravity.RIGHT | Gravity.CENTER_VERTICAL;// 將右邊按鈕添加到窗口中windowManager.addView(rightImageView, layoutParams);}@Overridepublic boolean onTouchEvent(MotionEvent event) {I114gBoxLogUtils.d(TAG, "The onTouchEvent method execute.");switch (event.getAction()) {// 移動事件case MotionEvent.ACTION_MOVE:break;// 按下事件case MotionEvent.ACTION_DOWN:// 顯示ImageButton視圖showImageButtonView();break;// 按下后松開事件case MotionEvent.ACTION_UP:// 隱藏ImageButton視圖hideImageButtonView();break;default:break;}return true;}/** 顯示ImageButton視圖 **/private void showImageButtonView() {isHide = true;mHandler.sendEmptyMessage(WHAT_SHOW);}/** 隱藏ImageButton視圖 **/private void hideImageButtonView() {new Thread() {@Overridepublic void run() {try {Thread.sleep(1500);isHide = false;mHandler.sendEmptyMessage(WHAT_HIDE);} catch (InterruptedException e) {I114gBoxLogUtils.e(TAG, e.getMessage());}};}.start();}/** 處理異步消息 **/@SuppressLint("HandlerLeak")private Handler mHandler = new Handler() {@Overridepublic void handleMessage(android.os.Message msg) {// 當接收到顯示左右圖片的消息時if (msg.what == 1 && mAlpha < 255) {mAlpha += 50;if (mAlpha > 255)mAlpha = 255;// 設置透明度leftImageView.setAlpha(mAlpha);// 刷新視圖leftImageView.invalidate();rightImageView.setAlpha(mAlpha);rightImageView.invalidate();if (!isHide && mAlpha < 255)mHandler.sendEmptyMessageDelayed(WHAT_SHOW, 100);}// 當接收到隱藏左右圖片的消息時else if (msg.what == 0 && mAlpha > 0) {mAlpha -= 10;if (mAlpha < 0)mAlpha = 0;// 設置透明度leftImageView.setAlpha(mAlpha);// 刷新視圖leftImageView.invalidate();rightImageView.setAlpha(mAlpha);rightImageView.invalidate();if (isHide && mAlpha > 0)mHandler.sendEmptyMessageDelayed(WHAT_HIDE, 100);}};};@Overrideprotected void onDestroy() {I114gBoxLogUtils.d(TAG, "The onDestory method execute.");super.onDestroy();// 移除ImageView控件windowManager.removeView(leftImageView);windowManager.removeView(rightImageView);};}
武林網友情提醒大家需要注意事項如下:
需要設置WindowManager的屬性,包含type、format和flags等等創建左右邊圖片動畫加載效果,并實現onTouchEvent事件,其中MotionEvent.ACTION_DOWN為按下監聽事件,MotionEvent.ACTION_UP為按下后松開事件
以上是本文給大家敘述的Android實現圖片輪播切換實例代碼,希望可以幫助到大家。
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