效果图如上
代码如下：
AutoTextView
package com.jky.mobilebzt.view; import android.content.Context; import android.content.res.TypedArray; import android.graphics.Camera; import android.graphics.Matrix; import android.text.TextUtils; import android.util.AttributeSet; import android.view.View; import android.view.animation.AccelerateInterpolator; import android.view.animation.Animation; import android.view.animation.Transformation; import android.widget.TextSwitcher; import android.widget.TextView; import android.widget.ViewSwitcher; import com.jky.mobilebzt.R; public class AutoTextView extends TextSwitcher implements ViewSwitcher.ViewFactory { private float mHeight; private Context mContext; //mInUp,mOutUp分别构成向下翻页的进出动画 private Rotate3dAnimation mInUp; private Rotate3dAnimation mOutUp; //mInDown,mOutDown分别构成向下翻页的进出动画 private Rotate3dAnimation mInDown; private Rotate3dAnimation mOutDown; public AutoTextView(Context context) { this(context, null); } public AutoTextView(Context context, AttributeSet attrs) { super(context, attrs); TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.auto3d); mHeight = a.getDimension(R.styleable.auto3d_textSize, 36); a.recycle(); mContext = context; init(); } private void init() { setFactory(this); mInUp = createAnim(-90, 0, true, true); mOutUp = createAnim(0, 90, false, true); mInDown = createAnim(90, 0, true, false); mOutDown = createAnim(0, -90, false, false); //TextSwitcher主要用于文件切换，比如 从文字A 切换到 文字 B， //setInAnimation()后，A将执行inAnimation， //setOutAnimation()后，B将执行OutAnimation //初始化翻转 // setInAnimation(mInUp); // setOutAnimation(mOutUp); } private Rotate3dAnimation createAnim(float start, float end, boolean turnIn, boolean turnUp) { final Rotate3dAnimation rotation = new Rotate3dAnimation(start, end, turnIn, turnUp); rotation.setDuration(800); rotation.setFillAfter(false); rotation.setInterpolator(new AccelerateInterpolator()); return rotation; } //这里返回的TextView，就是我们看到的View @Override public View makeView() { TextView t = new TextView(mContext); // t.setGravity(Gravity.CENTER); t.setTextSize(mHeight); // t.setTextColor(Resources.getSystem().getColor(android.R.color.black)); t.setTextColor(mContext.getResources().getColor(R.color.white)); t.setTextSize(13); // t.setGravity(Gravity.CENTER_VERTICAL); t.setPadding(0,15,0,15); t.setMaxLines(1); t.setEllipsize(TextUtils.TruncateAt.END); return t; } //定义动作，向下滚动翻页 public void previous() { if (getInAnimation() != mInDown) { setInAnimation(mInDown); } if (getOutAnimation() != mOutDown) { setOutAnimation(mOutDown); } } //定义动作，向上滚动翻页 public void next() { if (getInAnimation() != mInUp) { setInAnimation(mInUp); } if (getOutAnimation() != mOutUp) { setOutAnimation(mOutUp); } } class Rotate3dAnimation extends Animation { private final float mFromDegrees; private final float mToDegrees; private float mCenterX; private float mCenterY; private final boolean mTurnIn; private final boolean mTurnUp; private Camera mCamera; public Rotate3dAnimation(float fromDegrees, float toDegrees, boolean turnIn, boolean turnUp) { mFromDegrees = fromDegrees; mToDegrees = toDegrees; mTurnIn = turnIn; mTurnUp = turnUp; } @Override public void initialize(int width, int height, int parentWidth, int parentHeight) { super.initialize(width, height, parentWidth, parentHeight); mCamera = new Camera(); mCenterY = getHeight() / 2; mCenterX = getWidth() / 2; } @Override protected void applyTransformation(float interpolatedTime, Transformation t) { final float fromDegrees = mFromDegrees; float degrees = fromDegrees + ((mToDegrees - fromDegrees) * interpolatedTime); final float centerX = mCenterX; final float centerY = mCenterY; final Camera camera = mCamera; final int derection = mTurnUp ? 1 : -1; final Matrix matrix = t.getMatrix(); camera.save(); if (mTurnIn) { camera.translate(0.0f, derection * mCenterY * (interpolatedTime - 1.0f), 0.0f); } else { camera.translate(0.0f, derection * mCenterY * (interpolatedTime), 0.0f); } camera.rotateX(degrees); camera.getMatrix(matrix); camera.restore(); matrix.preTranslate(-centerX, -centerY); matrix.postTranslate(centerX, centerY); } } }
attrs.xml
<declare-styleable name="auto3d"> <attr name="textSize" format="dimension" /> </declare-styleable>
xml
<com.xx.xx.view.AutoTextView android:id="@+id/atv_auto_qy" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginTop="@dimen/margin_5" />
activity
private void showQyInfo() { // qyPowers.clear(); isShowQyView = true; mQyInfoView.setVisibility(View.VISIBLE); if(timer == null){ String[] qyinfo = context.getResources().getStringArray(R.array.qy_power); qyPowers = Arrays.asList(qyinfo); timer = new Timer(); timer.schedule(timerTask, 100, 3000); powerPosition = 0; } } //计时 TimerTask timerTask = new TimerTask() { @Override public void run() { if(isShowQyView) { Message message = new Message(); message.what = 0x001; handler.sendMessage(message); } } }; final Handler handler = new Handler() { @Override public void handleMessage(Message msg) { switch (msg.what) { case 0x001: atvQy.next(); atvQy.setText(qyPowers.get(powerPosition)); powerPosition ++; powerPosition = powerPosition % 3; } } };
strings.xml
<array name="qy_power"> <item>8000＋本建筑行业标准在线查看</item> <item>随时创建反馈，企业专家、云服务专家组、标准规范起草人为您解答</item> <item>移动课堂专享课程免费学习</item> </array>
