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！
自定义View + 属性动画ObjectAnimator
按键事件特殊处理。
1、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。
2.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。
3. 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。
4. 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。这里是亿速云，小编将为大家推送更多相关知识点的文章，欢迎关注！
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