本文实例讲述了Android开发之ViewFlipper自动播放图片功能实现方法。分享给大家供大家参考,具体如下:
简介:
1.ViewFlipper继承了ViewAnimator 可以调用addView()
添加组件
2.ViewAnimator与AdapterViewFlipper类似,区别在于 : AdapterViewFlipper可以通过Adapter直接添加多个view,而ViewAnimator 需要通过调用addView()
方法添加View
效果呈现:
有此实例可以看出 ViewFlipper 再制作轮播图等 图片自动播放器上 有很大优势
这里给出布局文件:
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<? xml version = "1.0" encoding = "utf-8" ?> < RelativeLayout xmlns:android = "http://schemas.android.com/apk/res/android" android:layout_width = "match_parent" android:layout_height = "match_parent" android:gravity = "center_horizontal" > <!--定义一个ViewFlipper组件--> < ViewFlipper android:id = "@+id/details" android:layout_width = "match_parent" android:layout_height = "match_parent" android:flipInterval = "1000" > <!--flipInterval:Simple ViewAnimator that will animate between two or more views that have been added to it. Only one child is shown at a time. If requested, can automatically flip between each child at a regular interval.--> < ImageButton android:id = "@+id/seaside" android:layout_width = "match_parent" android:layout_height = "wrap_content" android:src = "@drawable/a1" /> < ImageButton android:id = "@+id/mountain" android:layout_width = "match_parent" android:layout_height = "wrap_content" android:src = "@drawable/a2" /> < ImageButton android:id = "@+id/sky" android:layout_width = "match_parent" android:layout_height = "wrap_content" android:src = "@drawable/a3" /> </ ViewFlipper > < Button android:onClick = "prev" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_alignParentBottom = "true" android:layout_alignParentLeft = "true" /> < Button android:onClick = "auto" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_alignParentBottom = "true" android:layout_centerInParent = "true" android:text = "自动播放" /> < Button android:onClick = "next" android:layout_width = "wrap_content" android:layout_height = "wrap_content" android:layout_alignParentBottom = "true" android:layout_alignParentRight = "true" /> </ RelativeLayout > |
提示:flipInterval属性制定了自动播放图片的时间间隔
这里为了简便 采用再布局中直接添加ImageView 而不是通过Add
方法动态添加的手段
这里给出 具体功能的实现:
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public class MainActivity extends Activity { private ViewFlipper viewFlipper; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout.activity_main); viewFlipper = (ViewFlipper) findViewById(R.id.details); } public void prev(View source){ viewFlipper.setInAnimation( this ,android.R.anim.slide_in_left); viewFlipper.setOutAnimation( this ,android.R.anim.slide_out_right); //显示下一个 viewFlipper.showPrevious(); //停止自动播放 viewFlipper.stopFlipping(); } public void next(View source){ viewFlipper.setInAnimation( this ,android.R.anim.slide_in_left); viewFlipper.setOutAnimation( this ,android.R.anim.slide_out_right); //显示下一个 viewFlipper.showNext(); //停止自动播放 viewFlipper.stopFlipping(); } public void auto(View source){ viewFlipper.setInAnimation( this ,android.R.anim.slide_in_left); viewFlipper.setOutAnimation( this ,android.R.anim.slide_out_right); //停止自动播放 viewFlipper.startFlipping(); } } |
注:参考自 疯狂Android 讲义
希望本文所述对大家Android程序设计有所帮助。
原文链接:https://blog.csdn.net/qq_43377749/article/details/84986657