TextView翻滾:java
import android.content.Context; import android.content.res.TypedArray; import android.graphics.Camera; import android.graphics.Matrix; import android.util.AttributeSet; import android.view.Gravity; 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.ly.sxh.R; public class AutoTextView extends TextSwitcher implements ViewSwitcher.ViewFactory { private float mHeight; private Context mContext; //mInUp,mOutUp分別構成向下翻頁的進出動畫 private Rotate3dAnimation mInUp; private Rotate3dAnimation mOutUp; //mInDown,mOutDown分別構成向下翻頁的進出動畫 private Rotate3dAnimation mInDown; private Rotate3dAnimation mOutDown; public AutoTextView(Context context) { this(context, null); // TODO Auto-generated constructor stub } public AutoTextView(Context context, AttributeSet attrs) { super(context, attrs); // TODO Auto-generated constructor stub TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.auto3d); mHeight = a.getDimension(R.styleable.auto3d_textSize, 14); 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); //setOutAnimation()後,B將執行OutAnimation 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; } //這裏返回的TextView,就是咱們看到的View @Override public View makeView() { // TODO Auto-generated method stub TextView t = new TextView(mContext); t.setGravity(Gravity.CENTER); t.setTextSize(mHeight); t.setMaxLines(1); t.setTextColor(getResources().getColor(R.color.black6)); return t; } //定義動做,向下滾動翻頁 public void previous(){ if(getInAnimation() != mInDown){ setInAnimation(mInDown); } if(getOutAnimation() != mOutDown){ setOutAnimation(mOutDown); } } //定義動做,向上滾動翻頁 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); } } }
用法:
android
tv_gonggao = (AutoTextView) findViewById(R.id.xiaoxi_title); setHeight(90, tv_gonggao); tv_gonggao.setOnClickListener(this);