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這篇文章主要講解了“怎么實現(xiàn)Android TV 3D卡片無限循環(huán)效果”，文中的講解內(nèi)容簡單清晰，易于學(xué)習(xí)與理解，下面請大家跟著小編的思路慢慢深入，一起來研究和學(xué)習(xí)“怎么實現(xiàn)Android TV 3D卡片無限循環(huán)效果”吧！
自定義View + 屬性動畫ObjectAnimator
按鍵事件特殊處理。
1、ObjectAnimator屬性動畫的知識準(zhǔn)備。
2、父不居中自定義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間，其余兩張的卡片也是如此，達(dá)到3個View的起始位置一直，這樣方便之后的動畫旋轉(zhuǎn)。
2.添加自定義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();
//這里只是使用mvp的形式添加view.
}
@Override
public void clearAllFocus() {
//清除所有的焦點
if (mView != null) {
mView.clearAllFocus();
}
}
@Override
public void requestFirstFocus() {
//第一個控件強(qiáng)行指定焦點
if (mView != null) {
mView.requestFirstFocus();
}
}
@Override
public void updateListData() {
//更新列表顯示
if (mPresenter != null) {
mPresenter.reloadConferenceList();
}
}
}其中fragment_schedule.xml中只有一個簡單的FrameLayout. View2 和View3類似。
3. 動畫Util
(1) 設(shè)置3個卡片的初始位置
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);//離屏幕中心偏移距離
leftView.setRotationY(RUN_Y);//旋轉(zhuǎn)角度
leftView.setAlpha(LEFT_RIGHT_ALPHA);//設(shè)置透明度
}
public void initRightAnimator(View rightView) {
rightView.setTranslationX(RUN_X);//離屏幕中心偏移距離
rightView.setRotationY(RUN_Y_NEGATIVE);//旋轉(zhuǎn)角度
rightView.setAlpha(LEFT_RIGHT_ALPHA);//設(shè)置透明度
}
public void initMidAnimator(View midView) {
//由于初始位置在xml中設(shè)定是在正中間，這里就不重新設(shè)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); //中間的起始位置未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設(shè)置是否需要動畫執(zhí)行時間
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來判斷動畫是否完成，來控制下一次動畫是否需要執(zhí)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);
//繼續(xù)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);
//中途隱藏不顯示
ObjectAnimator animator6 = ObjectAnimator.ofFloat(runView, "alpha", 0.0f, 0.0f);
ObjectAnimator animator7 = ObjectAnimator.ofFloat(runView, "translationX", RUN_X_NEGATIVE, RUN_X_NEGATIVE);
//往左偏移顯示在左邊位置
ObjectAnimator animator8 = ObjectAnimator.ofFloat(runView, "rotationY", RUN_LARGE_Y, RUN_Y);
ObjectAnimator animator9 = ObjectAnimator.ofFloat(runView, "alpha", LEFT_RIGHT_ALPHA, LEFT_RIGHT_ALPHA);
//給分段動畫設(shè)置時間
if (anim) {
animator1.setDuration(170);
animator4.setDuration(60);
animator7.setDuration(170);
} else {
animator1.setDuration(0);
animator4.setDuration(0);
animator7.setDuration(0);
}
//with:同時執(zhí)行，after（動畫1）:在動畫1之后執(zhí)行，befor(動畫1)：在動畫1之前執(zhí)行。
//請注意以下的after(animator1)。表示動畫4.5.6在動畫1,2,3執(zhí)行完畢之后同時執(zhí)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，基本的動畫效果就是這些了，其他細(xì)節(jié)就不貼代碼了。
4. ScheduleView添加的子View焦點處理
@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);
}當(dāng)ScheduleView偏離中間位置時，需要清楚當(dāng)前界面所有的焦點并使其不能點擊。
當(dāng)ScheduleView旋轉(zhuǎn)到中間的時候需要重新使其獲取到焦點讓其能夠點擊。
左右旋轉(zhuǎn)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）處理方式是在監(jiān)聽遙控器的左右按鍵的UP事件，使其避免在Down時候處理旋轉(zhuǎn)太快系統(tǒng)ANR
（2）如果界面中含有EditView，如果其在界面的邊緣，那么左右按鍵就會和EditText有字符的時候就會對是否是最邊沿的判斷isLastFocus(0)產(chǎn)生影響。解決方案：
<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" />
在最左邊go_left_btn和最右邊go_right_btn添加隱形的btn,讓其獲取焦點，在左右按鍵UP的時候，焦點如果在兩個按鈕上就實行左右跳轉(zhuǎn)，否則停留在當(dāng)前界面。
感謝各位的閱讀，以上就是“怎么實現(xiàn)Android TV 3D卡片無限循環(huán)效果”的內(nèi)容了，經(jīng)過本文的學(xué)習(xí)后，相信大家對怎么實現(xiàn)Android TV 3D卡片無限循環(huán)效果這一問題有了更深刻的體會，具體使用情況還需要大家實踐驗證。這里是億速云，小編將為大家推送更多相關(guān)知識點的文章，歡迎關(guān)注！
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