ViewFlipper的功能和用法

TamGage 9年前

来自: http://blog.csdn.net/tuke_tuke/article/details/50774831


ViewFlipper组件继承了ViewAnimator,它可以调用addView(View v)添加多个组件向ViewFlipper中添加多个组件之后,ViewFlipper可使用动画控制多个组件之间的切换效果

ViewAnimator是一个基类,它继承的是FrameLayout,因此可以将多个View组件“叠加”在一起,ViewAnimator额外增加的功能就是可以在View切换时表现出动画效果。


ViewFlipper继承了ViewAnimation,额外增加的新功能如下:


eg.自动播放的图片库

acitivity_main.xml

<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:paddingBottom="@dimen/activity_vertical_margin"      android:paddingLeft="@dimen/activity_horizontal_margin"      android:paddingRight="@dimen/activity_horizontal_margin"      android:paddingTop="@dimen/activity_vertical_margin"      tools:context="com.example.viewflippertest.MainActivity" >       <!--  ViewFlipper组件,放了三个ImageView组件-->      <ViewFlipper          android:id="@+id/viewFlipper1"          android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_alignParentLeft="true"          android:layout_alignParentTop="true"          android:layout_marginLeft="80dp"          android:layout_marginTop="34dp"          android:flipInterval="1000" >            <ImageView              android:id="@+id/imageView1"              android:layout_width="wrap_content"              android:layout_height="wrap_content"              android:src="@drawable/bomb10" />            <ImageView              android:id="@+id/imageView2"              android:layout_width="wrap_content"              android:layout_height="wrap_content"              android:src="@drawable/bomb11" />            <ImageView              android:id="@+id/imageView3"              android:layout_width="wrap_content"              android:layout_height="wrap_content"              android:src="@drawable/bomb12" />        </ViewFlipper>        <Button          android:id="@+id/button1"          android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_alignParentLeft="true"          android:layout_centerVertical="true"          android:layout_marginLeft="32dp"          android:onClick="prev"          android:text="<" />        <Button          android:id="@+id/button2"          android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_centerVertical="true"          android:layout_toRightOf="@+id/button1"          android:onClick="auto"          android:text="Auto" />        <Button          android:id="@+id/button3"          android:layout_width="wrap_content"          android:layout_height="wrap_content"          android:layout_alignBaseline="@+id/button2"          android:layout_alignBottom="@+id/button2"          android:layout_toRightOf="@+id/button2"          android:onClick="next"          android:text=">" />    </RelativeLayout>
MainActvity.java

package com.example.viewflippertest;    import android.app.Activity;  import android.os.Bundle;  import android.view.Menu;  import android.view.MenuItem;  import android.view.View;  import android.widget.ViewFlipper;      public class MainActivity extends Activity {       ViewFlipper cf;//ViewFlipper对象      @Override      protected void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.activity_main);          cf=(ViewFlipper) findViewById(R.id.viewFlipper1);      }      //响应按钮函数      public void prev(View v){       cf.setInAnimation(this,R.anim.slide_in_right);       cf.setOutAnimation(this,R.anim.slide_out_left);              cf.showPrevious();       //停止切换       cf.stopFlipping();      };    //响应按钮函数      public void auto(View v){       cf.setInAnimation(this,R.anim.slide_in_right);       cf.setOutAnimation(this,R.anim.slide_out_left);         cf.startFlipping();      };    //响应按钮函数      public void next(View v){       cf.setInAnimation(this,R.anim.slide_in_left);       cf.setOutAnimation(this,R.anim.slide_out_right);              cf.showNext();       //停止切换       cf.stopFlipping();      };            @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;      }        @Override      public boolean onOptionsItemSelected(MenuItem item) {          // Handle action bar item clicks here. The action bar will          // automatically handle clicks on the Home/Up button, so long          // as you specify a parent activity in AndroidManifest.xml.          int id = item.getItemId();          if (id == R.id.action_settings) {              return true;          }          return super.onOptionsItemSelected(item);      }  }
slide_in_left.xml
<?xml version="1.0" encoding="utf-8"?>  <set xmlns:android="http://schemas.android.com/apk/res/android">      <!-- 设置从左边拖进来的动画      android:duration指定动画持续时间  -->   <translate    android:fromXDelta="-100%p"    android:toXDelta="0"    android:duration="@android:integer/config_mediumAnimTime" />  </set>
slide_in_right.xml

<?xml version="1.0" encoding="utf-8"?>  <set xmlns:android="http://schemas.android.com/apk/res/android">      <!-- 设置从右边拖进来的动画      android:duration指定动画持续时间  -->   <translate    android:fromXDelta="100%p"    android:toXDelta="0"    android:duration="@android:integer/config_mediumAnimTime" />  </set>

slide_out_left.xml

<?xml version="1.0" encoding="utf-8"?>  <set xmlns:android="http://schemas.android.com/apk/res/android">      <!-- 设置从左边拖出去的动画       android:duration指定动画持续时间 -->   <translate    android:fromXDelta="0"    android:toXDelta="-100%p"    android:duration="@android:integer/config_mediumAnimTime" />  </set>
slide_out_right.xml
<?xml version="1.0" encoding="utf-8"?>  <set xmlns:android="http://schemas.android.com/apk/res/android">      <!-- 设置从左边拖出去的动画       android:duration指定动画持续时间 -->   <translate    android:fromXDelta="0"    android:toXDelta="100%p"    android:duration="@android:integer/config_mediumAnimTime" />  </set>