Android Fragment切換動畫效果

MckinleyMap 8年前發布 | 104K 次閱讀 Android開發移動開發

來自： http://blog.csdn.net//lcq5211314123/article/details/48881441

以前做Fragment切換時，都是直接 Fragment的切換，最近看到趕集網首頁的Fragment點擊按鈕切換時，是有動畫效果的，看著還不錯，就參考網上的思路，照著實現了一下，下面是效果圖：
這里寫圖片描述
思路：類似于Activity的轉場動畫一樣，為FragmentTranslation添加指定的動畫即可。代碼如下：
1.自定義屬性動畫Layout,可extends任意一個布局，添加如下 set方法。使布局支持自定義的屬性動畫。

/**  @文件名稱：SlidingRelativeLayout.java  @文件作者：rzq  @創建時間：2015年10月2日 下午11:23:38  @文件描述：Fragment切換動畫效果Layout * @修改歷史：2015年10月2日創建初始版本 **/
public class SlidingRelativeLayout extends RelativeLayout {
    private float yFraction = 0;
    private float xFraction = 0;

public SlidingRelativeLayout(Context context)
{
    super(context);
}

public SlidingRelativeLayout(Context context, AttributeSet attrs)
{
    super(context, attrs);
}

public SlidingRelativeLayout(Context context, AttributeSet attrs, int defStyle)
{
    super(context, attrs, defStyle);
}

private ViewTreeObserver.OnPreDrawListener preDrawListener = null;

public void setYFraction(float fraction)
{
    this.yFraction = fraction;
    if (getHeight() == 0)
    {
        if (preDrawListener == null)
        {
            preDrawListener = new ViewTreeObserver.OnPreDrawListener()
            {
                @Override
                public boolean onPreDraw()
                {
                    getViewTreeObserver().removeOnPreDrawListener(preDrawListener);
                    setYFraction(yFraction);
                    return true;
                }
            };
            getViewTreeObserver().addOnPreDrawListener(preDrawListener);
        }
        return;
    }
    float translationY = getHeight() * fraction;
    Log.v("translationY set", translationY + " ");
    setTranslationY(translationY);
}

/** * 支持XFraction屬性動畫，以下都類似 */
public void setXFraction(float fraction)
{
    this.xFraction = fraction;
    if (getWidth() == 0)
    {
        if (preDrawListener == null)
        {
            preDrawListener = new ViewTreeObserver.OnPreDrawListener()
            {
                @Override
                public boolean onPreDraw()
                {
                    getViewTreeObserver().removeOnPreDrawListener(preDrawListener);
                    setXFraction(xFraction);
                    return true;
                }
            };
            getViewTreeObserver().addOnPreDrawListener(preDrawListener);
        }
        return;
    }
    float translationX = getWidth() * fraction;
    setTranslationX(translationX);
}

public void setGlide(float fraction)
{
    float translationX = getWidth() * fraction;
    setTranslationX(translationX);
    setRotationY(90 * fraction);
    setPivotX(0);
}

public void setGlideBack(float fraction)
{
    float translationX = getWidth() * fraction;
    setTranslationX(translationX);
    setRotationY(90 * fraction);
    setPivotX(0);
    setPivotY(getHeight() / 2);
}

}
2.為Fragment的切換添加指定的自定義屬性動畫。
public class FragmentTranslationActivity extends Activity implements OnClickListener {
    private LinearLayout mCategoryLayout;
    private LinearLayout mNearLayout;
    private LinearLayout mPublishLayout;
    private LinearLayout mPersionalLayout;
    private TextView mCateiView, mNearView, mPublishView, mPersionalView;

private FragmentManager fm;
private Fragment mCategoryFragment;
private Fragment mNearFragment;
private Fragment mPublishFragment;
private Fragment mPersionalCenterFragment;

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_fragment_transation);

    mCategoryLayout = (LinearLayout) findViewById(R.id.catagories_view);
    mCategoryLayout.setOnClickListener(this);
    mCateiView = (TextView) findViewById(R.id.category);
    mCateiView.setBackgroundResource(R.drawable.tab_lastcategories_selected);
    mNearLayout = (LinearLayout) findViewById(R.id.near_view);
    mNearLayout.setOnClickListener(this);
    mNearView = (TextView) findViewById(R.id.near);
    mPublishLayout = (LinearLayout) findViewById(R.id.publish_view);
    mPublishLayout.setOnClickListener(this);
    mPublishView = (TextView) findViewById(R.id.publish);
    mPersionalLayout = (LinearLayout) findViewById(R.id.persional_view);
    mPersionalLayout.setOnClickListener(this);
    mPersionalView = (TextView) findViewById(R.id.persional);
    // Add first fragment
    mCategoryFragment = new TranslationFragment(0);

    /** * 不應該在onCreate時全部創建Fragment,否則此Activity會加載的很慢，尤其有請求的時候 */
    // mNearFragment = new TranslationFragment(1);
    // mPublishFragment = new TranslationFragment(2);
    // mPersionalCenterFragment = new TranslationFragment(3);
    fm = getFragmentManager();

    FragmentTransaction fragmentTransaction = fm.beginTransaction();
    fragmentTransaction.replace(R.id.fragment_place, mCategoryFragment);
    fragmentTransaction.commit();
}

@Override
public void onClick(View v)
{
    /** * 取得FragmentTransaction事務對象 */
    FragmentTransaction fragmentTransaction = fm.beginTransaction();
    if (Build.VERSION.SDK_INT >= 11)
    {
    /** * 為FragmentTransaction添加指定的自定義屬性動畫（注意：使用support.v4.FragmentTransaction只能添加View動畫） */ fragmentTransaction.setCustomAnimations(R.animator.slide_fragment_horizontal_right_in,
                R.animator.slide_fragment_horizontal_left_out, R.animator.slide_fragment_horizontal_left_in,
                R.animator.slide_fragment_horizontal_right_out);
    }

    switch (v.getId())
    {
    case R.id.catagories_view:
        mCateiView.setBackgroundResource(R.drawable.tab_lastcategories_selected);
        mNearView.setBackgroundResource(R.drawable.tab_near);
        mPublishView.setBackgroundResource(R.drawable.tab_publish);
        mPersionalView.setBackgroundResource(R.drawable.tab_personal_centre_default);
        if (mCategoryFragment == null)
        {
            mCategoryFragment = new TranslationFragment(0);
        }
        fragmentTransaction.replace(R.id.fragment_place, mCategoryFragment);
        break;
    case R.id.near_view:
        mNearView.setBackgroundResource(R.drawable.tab_near_selected);
        mCateiView.setBackgroundResource(R.drawable.tab_lastcategories);
        mPublishView.setBackgroundResource(R.drawable.tab_publish);
        mPersionalView.setBackgroundResource(R.drawable.tab_personal_centre_default);
        if (mNearFragment == null)
        {
            mNearFragment = new TranslationFragment(1);
        }
        fragmentTransaction.replace(R.id.fragment_place, mNearFragment);
        break;
    case R.id.publish_view:
        mPublishView.setBackgroundResource(R.drawable.tab_publish_selected);
        mCateiView.setBackgroundResource(R.drawable.tab_lastcategories);
        mNearView.setBackgroundResource(R.drawable.tab_near);
        mPersionalView.setBackgroundResource(R.drawable.tab_personal_centre_default);
        if (mPublishFragment == null)
        {
            mPublishFragment = new TranslationFragment(2);
        }
        fragmentTransaction.replace(R.id.fragment_place, mPublishFragment);
        break;
    case R.id.persional_view:
        mPersionalView.setBackgroundResource(R.drawable.tab_personal_centre_selected);
        mCateiView.setBackgroundResource(R.drawable.tab_lastcategories);
        mNearView.setBackgroundResource(R.drawable.tab_near);
        mPublishView.setBackgroundResource(R.drawable.tab_publish);
        if (mPersionalCenterFragment == null)
        {
            mPersionalCenterFragment = new TranslationFragment(3);
        }
        fragmentTransaction.replace(R.id.fragment_place, mPersionalCenterFragment);
        break;
    }
    fragmentTransaction.commit();
}

}</pre> 
 
代碼也不復雜，主要有以下幾點注意：

 
  fragmentTransaction.setCustomAnimation()只能添加xml中定義的動畫。

setCustomAnimation()必須在replace,add等方法前才會生效。
使用support.v4包，則只能添加View動畫，添加自定義的屬性動畫會報：不能識別的動畫類型。
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