Android的 - TabActivity与过渡动画(Android - TabActivity

2019-06-23 09:59发布

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我想要的动画添加到我的TabActivty。 例如，当用户选择第二个选项卡，我想新的活动来自于正确的。 当用户选择了第一个选项卡，我想活动来自左边。

我发现如何添加一个动画，但我想再次添加一个。 下面是我使用的代码： 

public 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);
    inFromRight.setDuration(240);
    inFromRight.setInterpolator(new AccelerateInterpolator());
    return inFromRight;
}

和

getTabHost().setOnTabChangedListener(new OnTabChangeListener() {
       public void onTabChanged(String tabId)
       {
           View currentView = getTabHost().getCurrentView();
           currentView.setAnimation( inFromRightAnimation() );
       }
});

我怎样才能做到这一点？

谢谢。

问候。

V.

Answer 1:

这正常工作： 

getTabHost().setOnTabChangedListener(new OnTabChangeListener() {
     public void onTabChanged(String tabId)
     {
            View currentView = getTabHost().getCurrentView();
            if (getTabHost().getCurrentTab() > currentTab)
            {
                currentView.setAnimation( inFromRightAnimation() );
            }
            else
            {
                currentView.setAnimation( outToRightAnimation() );
            }

            currentTab = getTabHost().getCurrentTab();
     }
});

和动画： 

public 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);
    inFromRight.setDuration(240);
    inFromRight.setInterpolator(new AccelerateInterpolator());
    return inFromRight;
}

public Animation outToRightAnimation()
{
    Animation outtoLeft = 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);
    outtoLeft.setDuration(240);
    outtoLeft.setInterpolator(new AccelerateInterpolator());
    return outtoLeft;
}


Answer 2:

我写了一个基于这个代码，我想分享一个自定义OnTabChangeListener。 希望有人可以用它:)。 幸得Vomenki的原代码。 

package net.danielkvist.receipttracker.listener;

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;
    }
}


Answer 3:

你必须使用String tabId和检查if这个tabId==firstTab然后把动画从左至右else动画右。



Answer 4:

如果你喜欢，你可以使用Android支持包- http://developer.android.com/sdk/compatibility-library.html

很少的努力，你可以修改你的活动使用片段，你的片能够具有过渡动画就像YouTube应用。 下面是如何实现它的样本代码- http://developer.android.com/sdk/compatibility-library.html

编辑：如果你不想使用支持包，也许这将实施帮助

私有类MyGestureDetector扩展SimpleOnGestureListener { 

      private static final int SWIPE_MIN_DISTANCE = 120;
      private static final int SWIPE_MAX_OFF_PATH = 250;
      private static final int SWIPE_THRESHOLD_VELOCITY = 200;

      public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
        //get density   
          final DisplayMetrics metrics = getResources().getDisplayMetrics();
          final float density = metrics.density;
       //System.out.println(" in onFling() :: ");
          //off path
          if (Math.abs(e1.getY() - e2.getY()) > density*SWIPE_MAX_OFF_PATH)
              return false;
          //fling from right to left
          if (e1.getX() - e2.getX() > density*SWIPE_MIN_DISTANCE && Math.abs(velocityX) > density*SWIPE_THRESHOLD_VELOCITY) {
              //if the first tab is selected
              if(currentSelection.equalsIgnoreCase(getString(R.string.tab_details_info))) {
                  //switch to second tab and save current selection
                  tabs.setCurrentTab(1);
                  currentSelection = tabs.getCurrentTabTag();
              }
              //if the second tab is selected
              else if(currentSelection.equalsIgnoreCase(getString(R.string.tab_details_details))) {
                  //switch to second tab and save current selection
                  tabs.setCurrentTab(2);
                  currentSelection = tabs.getCurrentTabTag();
              }
          }
          //fling from left to right
          else if (e2.getX() - e1.getX() > density*SWIPE_MIN_DISTANCE && Math.abs(velocityX) > density*SWIPE_THRESHOLD_VELOCITY) {

              //if the second tab is selected
              if(currentSelection.equalsIgnoreCase(getString(R.string.tab_details_details))) {
                  //switch to second tab and save current selection
                  tabs.setCurrentTab(0);
                  currentSelection = tabs.getCurrentTabTag();
              }
              //if the third tab is selected
              else if(currentSelection.equalsIgnoreCase(getString(R.string.tab_details_company))) {
                  //switch to second tab and save current selection
                  tabs.setCurrentTab(1);
                  currentSelection = tabs.getCurrentTabTag();
              }
          }
          return super.onFling(e1, e2, velocityX, velocityY);
      }
}

然后你的标签上改变监听器只是加载相应的动画，因为你知道哪一个是手势之前选择的，而且我们要切换到后一个。 

        @Override
        public void onTabChanged(String tabId) {



            //if the first tab is selected
            if(currentSelection.equalsIgnoreCase(getResources().getString(R.string.tab_details_info))) {
                //if we switch to second
                if(tabId.equalsIgnoreCase(getResources().getString(R.string.tab_details_details))) {
                    linearInfo.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.push_left_out));
                    linearDetails.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.push_left_in));
                    linearCompany.setAnimation(null);
                }
                //if switch to third
                else if(tabId.equalsIgnoreCase(getResources().getString(R.string.tab_details_company))) {
                    linearInfo.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.push_left_out));
                    linearDetails.setAnimation(null);
                    linearCompany.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.push_left_in));
                }
            }
            //if the second tab is selected
            else if(currentSelection.equalsIgnoreCase(getResources().getString(R.string.tab_details_details))) {
                //if we switch to first
                if(tabId.equalsIgnoreCase(getResources().getString(R.string.tab_details_info))) {
                    linearInfo.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.push_right_in));
                    linearDetails.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.push_right_out));
                    linearCompany.setAnimation(null);
                }
                //if switch to third
                else if(tabId.equalsIgnoreCase(getResources().getString(R.string.tab_details_company))) {
                    linearInfo.setAnimation(null);
                    linearDetails.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.push_left_out));
                    linearCompany.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.push_left_in));
                }
            }
            //if the third tab is selected
            else if(currentSelection.equalsIgnoreCase(getResources().getString(R.string.tab_details_company))) {
                //if we switch to first
                if(tabId.equalsIgnoreCase(getResources().getString(R.string.tab_details_info))) {
                    linearInfo.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.push_right_in));
                    linearDetails.setAnimation(null);
                    linearCompany.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.push_right_out));
                }
                //if switch to second
                else if(tabId.equalsIgnoreCase(getResources().getString(R.string.tab_details_details))) {
                    linearInfo.setAnimation(null);
                    linearDetails.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.push_right_in));
                    linearCompany.setAnimation(AnimationUtils.loadAnimation(getApplicationContext(), R.anim.push_right_out));
                }
            }

            currentSelection = tabId;
        }
    };

此外，你需要用你自定义的姿态探测器重写onTouchListener赶上手势（也许考虑不同的屏幕密度确定手势是刷卡动作时）

很抱歉的长期答案，但我希望它能帮助:)



文章来源: Android - TabActivity with Transition animation
标签： android animation android-tabhost
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