这篇文章主要讲解了“怎么实现Android TV 3D卡片无限循环效果”，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习“怎么实现Android TV 3D卡片无限循环效果”吧！
##思路
自定义View + 属性动画ObjectAnimator
按键事件特殊处理。
##实现方式
ObjectAnimator属性动画的知识准备。
2、父不居中自定义ScheduleView，View2, View3
<com.base.module.gvclauncher2.ui.ScheduleView android:id="@+id/schedule_view" android:layout_width="@dimen/main_card_width" android:layout_height="@dimen/main_card_height" android:layout_gravity="center_horizontal" android:layout_marginTop="@dimen/main_card_margin_top" android:focusable="true" android:nextFocusLeft="@+id/contacts_view" android:nextFocusRight="@+id/call_view"> </com.base.module.gvclauncher2.ui.ScheduleView>其中android:layout_gravity=“center_horizontal”，使卡片在界面的正中间，其余两张的卡片也是如此，达到3个View的起始位置一直，这样方便之后的动画旋转。
添加自定义ScheduleView
public class ScheduleView extends BasePhoneView { private static final String TAG = "CallFragment"; private static final boolean DEBUG = true; private Context mContext; private View mRootView; private FrameLayout mMainView; private ScheduleContract.View mView; private ScheduleContract.Presenter mPresenter; public ScheduleView(Context context) { super(context); this.mContext = context; initView(); } public ScheduleView(Context context, AttributeSet attrs) { super(context, attrs); this.mContext = context; initView(); } public ScheduleView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); this.mContext = context; initView(); } private void initView() { findView(); initData(); } private void findView() { mRootView = LayoutInflater.from(mContext).inflate(R.layout.fragment_schedule, this); mMainView = (FrameLayout) mRootView.findViewById(R.id.schedule_contains); mMainView.setVisibility(View.VISIBLE); } private void initData() { mMainView.removeAllViews(); mView = ScheduleContractFactory.createScheduleView(mContext); mMainView.addView((View) mView); mPresenter = ScheduleContractFactory.createSchedulePresenter(mContext, mView); mPresenter.onCreate(); //这里只是使用mvp的形式添加view. } @Override public void clearAllFocus() { //清除所有的焦点 if (mView != null) { mView.clearAllFocus(); } } @Override public void requestFirstFocus() { //第一个控件强行指定焦点 if (mView != null) { mView.requestFirstFocus(); } } @Override public void updateListData() { //更新列表显示 if (mPresenter != null) { mPresenter.reloadConferenceList(); } }}其中fragment_schedule.xml中只有一个简单的FrameLayout. View2 和View3类似。
动画Util
(1) 设置3个卡片的初始位置
public final static float RUN_Y = 22.0f;public final static float RUN_LARGE_Y = 24.0f;public final static float RUN_Y_NEGATIVE = -22.0f;public final static float RUN_LARGE_Y_NEGATIVE = -24.0f;public final static float RUN_X = 1235.0f;public final static float RUN_X_NEGATIVE = -1235.0f;public final static float RUN_LARGE_X = 1366.0f;public final static float RUN_LARGE_X_NEGATIVE = -1366.0f;public void initLeftAnimator(View leftView) { leftView.setTranslationX(RUN_X_NEGATIVE);//离屏幕中心偏移距离 leftView.setRotationY(RUN_Y);//旋转角度 leftView.setAlpha(LEFT_RIGHT_ALPHA);//设置透明度 } public void initRightAnimator(View rightView) { rightView.setTranslationX(RUN_X);//离屏幕中心偏移距离 rightView.setRotationY(RUN_Y_NEGATIVE);//旋转角度 rightView.setAlpha(LEFT_RIGHT_ALPHA);//设置透明度 } public void initMidAnimator(View midView) { //由于初始位置在xml中设定是在正中间，这里就不重新设置偏移量 midView.setAlpha(MIDDLE_ALPHA); }public void midToLeftAnimator(final View runView, boolean anim) { ObjectAnimator animatorX = ObjectAnimator.ofFloat(runView, "translationX", 0, RUN_X_NEGATIVE); //中间的起始位置未0 ObjectAnimator animatorZ = ObjectAnimator.ofFloat(runView, "rotationY", 0, RUN_Y); ObjectAnimator animator3 = ObjectAnimator.ofFloat(runView, "alpha", MIDDLE_ALPHA, LEFT_RIGHT_ALPHA); mMidToLeftAnimator = new AnimatorSet(); mMidToLeftAnimator.play(animatorX).with(animatorZ).with(animator3); //anim设置是否需要动画执行时间 if (anim) { mMidToLeftAnimator.setDuration(DURATION); } else { mMidToLeftAnimator.setDuration(0); } mMidToLeftAnimator.addListener(new Animator.AnimatorListener() { @Override public void onAnimationStart(Animator animation) { mIsScrolling = true; } @Override public void onAnimationEnd(Animator animation) { //mIsScrolling来判断动画是否完成，来控制下一次动画是否需要执行 mIsScrolling = false; } @Override public void onAnimationCancel(Animator animation) { } @Override public void onAnimationRepeat(Animator animation) { } }); mMidToLeftAnimator.start(); } public void midToRightAnimator(final View runView, boolean anim) { ObjectAnimator animatorX = ObjectAnimator.ofFloat(runView, "translationX", 0, RUN_X); ObjectAnimator animatorZ = ObjectAnimator.ofFloat(runView, "rotationY", 0, RUN_Y_NEGATIVE); ObjectAnimator animator3 = ObjectAnimator.ofFloat(runView, "alpha", MIDDLE_ALPHA, LEFT_RIGHT_ALPHA); mMidToRightAnimator = new AnimatorSet(); mMidToRightAnimator.play(animatorX).with(animatorZ).with(animator3); if (anim) { mMidToRightAnimator.setDuration(DURATION); } else { mMidToRightAnimator.setDuration(0); } mMidToRightAnimator.addListener(new Animator.AnimatorListener() { @Override public void onAnimationStart(Animator animation) { mIsScrolling = true; } @Override public void onAnimationEnd(Animator animation) { mIsScrolling = false; } @Override public void onAnimationCancel(Animator animation) { } @Override public void onAnimationRepeat(Animator animation) { } }); mMidToRightAnimator.start(); } public void rightToMidAnimator(final View runView, boolean anim) { ObjectAnimator animatorX = ObjectAnimator.ofFloat(runView, "translationX", RUN_X, 0); ObjectAnimator animatorZ = ObjectAnimator.ofFloat(runView, "rotationY", RUN_Y_NEGATIVE, 0); ObjectAnimator animator3 = ObjectAnimator.ofFloat(runView, "alpha", LEFT_RIGHT_ALPHA, MIDDLE_ALPHA); mRightToMidAnimator = new AnimatorSet(); mRightToMidAnimator.play(animatorX).with(animatorZ).with(animator3); if (anim) { mRightToMidAnimator.setDuration(DURATION); } else { mRightToMidAnimator.setDuration(0); } mRightToMidAnimator.addListener(new Animator.AnimatorListener() { @Override public void onAnimationStart(Animator animation) { mIsScrolling = true; } @Override public void onAnimationEnd(Animator animation) { mIsScrolling = false; } @Override public void onAnimationCancel(Animator animation) { } @Override public void onAnimationRepeat(Animator animation) { } }); mRightToMidAnimator.start(); } public void leftToMidAnimator(final View runView, boolean anim) { ObjectAnimator animatorX = ObjectAnimator.ofFloat(runView, "translationX", RUN_X_NEGATIVE, 0); ObjectAnimator animatorZ = ObjectAnimator.ofFloat(runView, "rotationY", RUN_Y, 0); ObjectAnimator animator3 = ObjectAnimator.ofFloat(runView, "alpha", LEFT_RIGHT_ALPHA, MIDDLE_ALPHA); mLeftToMidAnimator = new AnimatorSet(); mLeftToMidAnimator.play(animatorX).with(animatorZ).with(animator3); if (anim) { mLeftToMidAnimator.setDuration(DURATION); } else { mLeftToMidAnimator.setDuration(0); } mLeftToMidAnimator.addListener(new Animator.AnimatorListener() { @Override public void onAnimationStart(Animator animation) { mIsScrolling = true; } @Override public void onAnimationEnd(Animator animation) { mIsScrolling = false; } @Override public void onAnimationCancel(Animator animation) { } @Override public void onAnimationRepeat(Animator animation) { } }); mLeftToMidAnimator.start(); } public void rightToLeftAnimator(View runView, boolean anim) { ObjectAnimator animator1 = ObjectAnimator.ofFloat(runView, "translationX", RUN_X, RUN_LARGE_X); ObjectAnimator animator2 = ObjectAnimator.ofFloat(runView, "rotationY", RUN_Y_NEGATIVE, RUN_LARGE_Y_NEGATIVE); ObjectAnimator animator3 = ObjectAnimator.ofFloat(runView, "alpha", LEFT_RIGHT_ALPHA, 0.0f); //继续往右偏移 ObjectAnimator animator4 = ObjectAnimator.ofFloat(runView, "translationX", RUN_LARGE_X, RUN_X_NEGATIVE); ObjectAnimator animator5 = ObjectAnimator.ofFloat(runView, "rotationY", RUN_LARGE_Y_NEGATIVE, RUN_LARGE_Y); //中途隐藏不显示 ObjectAnimator animator6 = ObjectAnimator.ofFloat(runView, "alpha", 0.0f, 0.0f); ObjectAnimator animator7 = ObjectAnimator.ofFloat(runView, "translationX", RUN_X_NEGATIVE, RUN_X_NEGATIVE); //往左偏移显示在左边位置 ObjectAnimator animator8 = ObjectAnimator.ofFloat(runView, "rotationY", RUN_LARGE_Y, RUN_Y); ObjectAnimator animator9 = ObjectAnimator.ofFloat(runView, "alpha", LEFT_RIGHT_ALPHA, LEFT_RIGHT_ALPHA); //给分段动画设置时间 if (anim) { animator1.setDuration(170); animator4.setDuration(60); animator7.setDuration(170); } else { animator1.setDuration(0); animator4.setDuration(0); animator7.setDuration(0); }//with:同时执行，after（动画1）:在动画1之后执行，befor(动画1)：在动画1之前执行。//请注意以下的after(animator1)。表示动画4.5.6在动画1,2,3执行完毕之后同时执行 mRightToLeftAnimator = new AnimatorSet(); mRightToLeftAnimator.play(animator1).with(animator2).with(animator3); mRightToLeftAnimator.play(animator4).with(animator5).with(animator6).after(animator1); mRightToLeftAnimator.play(animator7).with(animator8).with(animator9).after(animator4); mRightToLeftAnimator.addListener(new Animator.AnimatorListener() { @Override public void onAnimationStart(Animator animation) { mIsScrolling = true; } @Override public void onAnimationEnd(Animator animation) { //mIsScrolling = false; } @Override public void onAnimationCancel(Animator animation) { } @Override public void onAnimationRepeat(Animator animation) { } }); mRightToLeftAnimator.start(); } public void leftToRightAnimator(View runView, boolean anim) { ObjectAnimator animator1 = ObjectAnimator.ofFloat(runView, "translationX", RUN_X_NEGATIVE, RUN_LARGE_X_NEGATIVE); ObjectAnimator animator2 = ObjectAnimator.ofFloat(runView, "rotationY", RUN_Y, RUN_LARGE_Y); ObjectAnimator animator3 = ObjectAnimator.ofFloat(runView, "alpha", LEFT_RIGHT_ALPHA, 0.0f); ObjectAnimator animator4 = ObjectAnimator.ofFloat(runView, "translationX", RUN_LARGE_X_NEGATIVE, RUN_X); ObjectAnimator animator5 = ObjectAnimator.ofFloat(runView, "rotationY", RUN_LARGE_Y, RUN_LARGE_Y_NEGATIVE); ObjectAnimator animator6 = ObjectAnimator.ofFloat(runView, "alpha", 0.0f, 0.0f); ObjectAnimator animator7 = ObjectAnimator.ofFloat(runView, "translationX", RUN_X, RUN_X); ObjectAnimator animator8 = ObjectAnimator.ofFloat(runView, "rotationY", RUN_LARGE_Y_NEGATIVE, RUN_Y_NEGATIVE); ObjectAnimator animator9 = ObjectAnimator.ofFloat(runView, "alpha", LEFT_RIGHT_ALPHA, LEFT_RIGHT_ALPHA); if (anim) { animator1.setDuration(170); animator4.setDuration(60); animator7.setDuration(170); } else { animator1.setDuration(0); animator4.setDuration(0); animator7.setDuration(0); } mLeftToRightAnimator = new AnimatorSet(); mLeftToRightAnimator.play(animator1).with(animator2).with(animator3); mLeftToRightAnimator.play(animator4).with(animator5).with(animator6).after(animator1); mLeftToRightAnimator.play(animator7).with(animator8).with(animator9).after(animator4); mLeftToRightAnimator.addListener(new Animator.AnimatorListener() { @Override public void onAnimationStart(Animator animation) { mIsScrolling = true; } @Override public void onAnimationEnd(Animator animation) { //mIsScrolling = false; } @Override public void onAnimationCancel(Animator animation) { } @Override public void onAnimationRepeat(Animator animation) { } }); mLeftToRightAnimator.start();}好了，基本的动画效果就是这些了，其他细节就不贴代码了。
ScheduleView添加的子View焦点处理
@Override public void clearAllFocus() { mConfListView.clearFocus(); mLoginBtn.clearFocus(); updateAllFocus(false); updateAllClickable(false); } @Override public void requestFirstFocus() { updateAllFocus(true); updateAllClickable(true); if (mPresenter.hasLogin()) { mConfListView.requestFocus(); } else { mLoginBtn.requestFocus(); } } private void updateAllFocus(boolean focus) { mConfListView.setFocusable(focus); mLoginBtn.setFocusable(focus); } private void updateAllClickable(boolean enabled) { mConfListView.setEnabled(enabled); mLoginBtn.setFocusable(enabled); }当ScheduleView偏离中间位置时，需要清楚当前界面所有的焦点并使其不能点击。
当ScheduleView旋转到中间的时候需要重新使其获取到焦点让其能够点击。
左右旋转控制
@Override public boolean dispatchKeyEvent(KeyEvent event) { int keyCode = event.getKeyCode(); int action = event.getAction(); Log.d(TAG, "keyCode v = " + keyCode); switch (keyCode) { case KeyEvent.KEYCODE_DPAD_LEFT: if (action == KeyEvent.ACTION_UP) { if (mCurrentItem == ITEMTAG.CALL && mCallView.isLastFocus(0)) { runLeftControl(true); } else if (mCurrentItem == ITEMTAG.CONTACTS && mContactsView.isLastFocus(0)) { runLeftControl(true); } else if (mCurrentItem == ITEMTAG.SCHEDULE) { runLeftControl(true); } } else if (action == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) { if (mCurrentItem == ITEMTAG.CALL) { mCallView.saveLastFocusId(); } } break; case KeyEvent.KEYCODE_DPAD_RIGHT: if (action == KeyEvent.ACTION_UP) { if (mCurrentItem == ITEMTAG.CALL && mCallView.isLastFocus(1)) { runRightControl(true); } else if (mCurrentItem == ITEMTAG.CONTACTS && mContactsView.isLastFocus(1)) { runRightControl(true); } else if (mCurrentItem == ITEMTAG.SCHEDULE) { runRightControl(true); } } else if (action == KeyEvent.ACTION_DOWN && event.getRepeatCount() == 0) { if (mCurrentItem == ITEMTAG.CALL) { mCallView.saveLastFocusId(); } } break; case KeyEvent.KEYCODE_MENU: if (action == KeyEvent.ACTION_UP) { AnimatorManager.getInstance().shakeView(mTitleMenuView, 0.5f); } break; } return super.dispatchKeyEvent(event); }（1）处理方式是在监听遥控器的左右按键的UP事件，使其避免在Down时候处理旋转太快系统ANR
（2）如果界面中含有EditView，如果其在界面的边缘，那么左右按键就会和EditText有字符的时候就会对是否是最边沿的判断isLastFocus(0)产生影响。解决方案：
<Button android:id="@+id/go_left_btn" android:layout_width="1dp" android:layout_height="1dp" android:background="@null" android:clickable="false" android:focusable="true" /><Button android:id="@+id/go_right_btn" android:layout_width="12dp" android:layout_height="match_parent" android:background="@null" android:clickable="false" android:focusable="true" android:nextFocusLeft="@+id/et_search" android:nextFocusRight="@+id/go_right_btn" />在最左边go_left_btn和最右边go_right_btn添加隐形的btn,让其获取焦点，在左右按键UP的时候，焦点如果在两个按钮上就实行左右跳转，否则停留在当前界面。
感谢各位的阅读，以上就是“怎么实现Android TV 3D卡片无限循环效果”的内容了，经过本文的学习后，相信大家对怎么实现Android TV 3D卡片无限循环效果这一问题有了更深刻的体会，具体使用情况还需要大家实践验证。这里是编程网，小编将为大家推送更多相关知识点的文章，欢迎关注！
