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编辑
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首要用于文件切换，比方 从文字A 切换到 文字 B，
//setInAnimation()后，A将履行inAnimation，
//setOutAnimation()后，B将履行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;
}
//这儿回来的TextView，便是我们看到的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;
}
//界说动作，向下滚动翻页
public void previous() {
if (getInAnimation() != mInDown) {
setInAnimation(mInDown);
}
if (getOutAnimation() != mOutDown) {
setOutAnimation(mOutDown);
}
}
//界说动作，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检查</item>
<item>随时创建反应，企业专家、云服务专家组、标准规范起草人为您解答</item>
<item>移动讲堂专享课程免费学习</item>
</array>
