Android TabHos 滑动效果
import android.view.View; import android.view.animation.AccelerateInterpolator; import android.view.animation.Animation; import android.view.animation.TranslateAnimation; import android.widget.TabHost; import android.widget.TabHost.OnTabChangeListener;/** * A custom OnTabChangeListener that uses the TabHost its related to to fetch information about the current and previous * tabs. It uses this information to perform some custom animations that slide the tabs in and out from left and right. * * @author Daniel Kvist * */public class AnimatedTabHostListener implements OnTabChangeListener{ private static final int ANIMATION_TIME = 240; private TabHost tabHost; private View previousView; private View currentView; private int currentTab; /** * Constructor that takes the TabHost as a parameter and sets previousView to the currentView at instantiation * * @param tabHost */ public AnimatedTabHostListener(TabHost tabHost) { this.tabHost = tabHost; this.previousView = tabHost.getCurrentView(); } /** * When tabs change we fetch the current view that we are animating to and animate it and the previous view in the * appropriate directions. */ @Override public void onTabChanged(String tabId) { currentView = tabHost.getCurrentView(); if (tabHost.getCurrentTab() > currentTab) { previousView.setAnimation(outToLeftAnimation()); currentView.setAnimation(inFromRightAnimation()); } else { previousView.setAnimation(outToRightAnimation()); currentView.setAnimation(inFromLeftAnimation()); } previousView = currentView; currentTab = tabHost.getCurrentTab(); } /** * Custom animation that animates in from right * * @return Animation the Animation object */ private Animation inFromRightAnimation() { Animation inFromRight = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, 1.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f); return setProperties(inFromRight); } /** * Custom animation that animates out to the right * * @return Animation the Animation object */ private Animation outToRightAnimation() { Animation outToRight = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 1.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f); return setProperties(outToRight); } /** * Custom animation that animates in from left * * @return Animation the Animation object */ private Animation inFromLeftAnimation() { Animation inFromLeft = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, -1.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f); return setProperties(inFromLeft); } /** * Custom animation that animates out to the left * * @return Animation the Animation object */ private Animation outToLeftAnimation() { Animation outtoLeft = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, -1.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f); return setProperties(outtoLeft); } /** * Helper method that sets some common properties * @param animation the animation to give common properties * @return the animation with common properties */ private Animation setProperties(Animation animation) { animation.setDuration(ANIMATION_TIME); animation.setInterpolator(new AccelerateInterpolator()); return animation; }}转载自：http://ask.csdn.net/questions/1122