Android动画初窥 位移动画之循环往复的动画

偶然的机会搞了下位移动画之循环往复的动画，不多说 直接上代码！

XML文件。

activity_base.xml文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/baseActivityLinearLayout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/base_bg"
    android:orientation="vertical" >

    <RelativeLayout
        android:id="@+id/baseActivityTitleBarRelativeLayout"
        android:layout_width="fill_parent"
        android:layout_height="50dip"
        android:layout_gravity="top"
        android:background="@drawable/ic_pulltorefresh_arrow"
        android:gravity="center_vertical" >

        <LinearLayout
            android:id="@+id/baseActivityTitleBarLeftView"
            android:layout_width="wrap_content"
            android:layout_height="fill_parent"
            android:layout_alignParentLeft="true"
            android:layout_centerVertical="true"
            android:layout_marginLeft="5dip"
            android:orientation="vertical" >

            <LinearLayout
                android:id="@+id/baseActivityTitleBarLeftViewLinearLayout"
                android:layout_width="wrap_content"
                android:layout_height="fill_parent"
                android:orientation="vertical" />

            <Button
                android:id="@+id/baseActivityTitleBarLeftButton"
                android:layout_width="wrap_content"
                android:layout_height="fill_parent"
                android:background="@null"
                android:textColor="#FFFFFFFF"
                android:textSize="20sp" />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/baseActivityTitleBarRightView"
            android:layout_width="wrap_content"
            android:layout_height="fill_parent"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:layout_marginRight="5dip"
            android:orientation="vertical" >

            <LinearLayout
                android:id="@+id/baseActivityTitleBarRightViewLinearLayout"
                android:layout_width="wrap_content"
                android:layout_height="fill_parent"
                android:orientation="vertical" />

            <Button
                android:id="@+id/baseActivityTitleBarRightButton"
                android:layout_width="wrap_content"
                android:layout_height="fill_parent"
                android:background="@null"
                android:textColor="#FFFFFFFF"
                android:textSize="20sp" />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/baseActivityTitleBarCenterView"
            android:layout_toLeftOf="@id/baseActivityTitleBarRightView"
            android:layout_toRightOf="@id/baseActivityTitleBarLeftView"
            android:layout_width="wrap_content"
            android:layout_height="fill_parent"
            android:layout_alignParentRight="true"
            android:layout_centerInParent="true"
            android:orientation="vertical" 
            android:gravity="center">

            <TextView
                android:id="@+id/baseActivityTitleBarCenterTextView"
                android:layout_width="wrap_content"
                android:layout_height="fill_parent"
                android:gravity="center"
                android:textColor="#FFFFFFFF"
                android:textSize="20sp" />

            <LinearLayout
                android:id="@+id/baseActivityTitleBarCenterViewLinearLayout"
                android:layout_width="wrap_content"
                android:layout_height="fill_parent"
                android:orientation="vertical" />
        </LinearLayout>
    </RelativeLayout>

    <LinearLayout
        android:id="@+id/baseActivityContentLinearLayout"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical" />

</LinearLayout>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <LinearLayout 
        android:layout_width="300dip"
        android:layout_height="300dip"
        android:background="#FF0000FF"
        android:layout_margin="10dip"
        >
        <ImageView
            android:id="@+id/imageView"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:src="@drawable/ic_launcher"
            android:scaleType="center"
            />
        
    </LinearLayout>    
</LinearLayout>

BaseActivity.xml

package com.xinye.ui;

import android.app.Activity;
import android.content.res.Resources;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Window;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.xinye.R;
/**
 * 所有Activity的父类
 * @author xinye
 *
 */
public abstract class BaseActivity extends Activity {
    /**
     * TitleBar
     */
    protected TitleBar titleBar;
    /**
     * 布局填充器
     */
    protected LayoutInflater layoutInflater;
    /**
     * 页面主要内容的显示View
     */
    protected LinearLayout contentView;
    /**
     * 布局参数
     */
    protected LinearLayout.LayoutParams contentViewDefaultParams;
    /**
     * Resource对象
     */
    protected Resources resources;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // 设置无标题
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        // 设置内容显示的View
        setContentView(R.layout.activity_base);
        // Resource对象
        resources = getResources();
        // 得到LayoutInflater
        layoutInflater = getLayoutInflater();
        // 初始化TitleBar
        initTitleBar();
        // 初始化ContentView
        initContentView();
    }
    /**
     * 初始化ContentView
     */
    private void initContentView() {
        contentView = (LinearLayout) findViewById(R.id.baseActivityContentLinearLayout);
        contentViewDefaultParams = new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.FILL_PARENT, 
                LinearLayout.LayoutParams.FILL_PARENT);
        inflateContentView();
    }
    /**
     * 填充view到ContentView
     * @param view
     */
    protected abstract void inflateContentView();
    /**
     * 初始化TitleBar
     */
    private void initTitleBar() {
        titleBar = new TitleBar(layoutInflater);
        
        titleBar.titleBar = (RelativeLayout) findViewById(R.id.baseActivityTitleBarRelativeLayout);
        
        titleBar.leftButton = (Button) findViewById(R.id.baseActivityTitleBarLeftButton);
        titleBar.leftView = (LinearLayout) findViewById(R.id.baseActivityTitleBarLeftViewLinearLayout);
        
        titleBar.centerTextView = (TextView) findViewById(R.id.baseActivityTitleBarCenterTextView);
        titleBar.centerView = (LinearLayout) findViewById(R.id.baseActivityTitleBarCenterViewLinearLayout);
        
        titleBar.rightButton = (Button) findViewById(R.id.baseActivityTitleBarRightButton);
        titleBar.rightView = (LinearLayout) findViewById(R.id.baseActivityTitleBarRightViewLinearLayout);
    }
    
}

MainActivity.java

package com.xinye.ui;

import java.util.ArrayList;

import android.os.Handler;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;
import android.widget.ListView;

import com.xinye.R;
import com.xinye.adapter.MainActivityListViewAdapter;
/**
 * MainActivity
 * @author xinye
 *
 */
public class MainActivity extends BaseActivity{
    private Handler mHandler = new Handler();
    private ImageView mImageView;
    private View mView;
    @Override
    protected void inflateContentView() {
        mView = layoutInflater.inflate(R.layout.activity_main, null);
        mImageView = (ImageView) mView.findViewById(R.id.imageView);
        contentView.addView(mView, contentViewDefaultParams);
        mView.measure(50, 50);
        mImageView.measure(50, 50);
        new Thread(new Runnable() {
            @Override
            public void run() {
                mHandler.post(new Runnable() {
                    @Override
                    public void run() {
                        TranslateAnimation ta1 = new TranslateAnimation(
                                TranslateAnimation.RELATIVE_TO_PARENT, 0, 
                                TranslateAnimation.RELATIVE_TO_PARENT, 0 ,
                                TranslateAnimation.RELATIVE_TO_PARENT, 0,
                                TranslateAnimation.RELATIVE_TO_PARENT, 
                                1 - (mImageView.getMeasuredHeight()) * 1.0f / mView.getMeasuredHeight());
                        ta1.setDuration(2000);
                        ta1.setStartTime(0);
                        ta1.setRepeatCount(Integer.MAX_VALUE);
                        ta1.setRepeatMode(Animation.REVERSE);
                        mImageView.startAnimation(ta1);
                    }
                });
            }
        }).start();
        
    }
}

效果图：