現在只需要在布局文件中調用該控件就可以實現一個走動的時間了。
第二步就是需要給這個走動的時間加上倒影了,我們就需要寫一個控件來繼承上面一個時間走動的控件,就可以實現帶有倒影的時間走動的View了,下面是帶有倒影的代碼:
package com.alex.reflecttextview;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.LinearGradient;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Shader.TileMode;
import android.util.AttributeSet;
public class ReflectTextView extends TimeView {
private Matrix mMatrix;
private Paint mPaint;
public ReflectTextView(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
private void init() {
mMatrix = new Matrix();
mMatrix.preScale(1, -1);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
setMeasuredDimension(getMeasuredWidth(), (int)(getMeasuredHeight()*1.67));
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
int height = getHeight();
int width = getWidth();
setDrawingCacheEnabled(true);
Bitmap originalImage = Bitmap.createBitmap(getDrawingCache());
Bitmap reflectionImage = Bitmap.createBitmap(originalImage, 0, height/5, width, height/2, mMatrix, false);
canvas.drawBitmap(reflectionImage, 0, height/3f, null);
if(mPaint == null) {
mPaint = new Paint();
LinearGradient shader = new LinearGradient(0, height/2, 0,
height, 0x7fffffff, 0x0fffffff, TileMode.CLAMP);
mPaint.setShader(shader);
mPaint.setXfermode(new PorterDuffXfermode(Mode.DST_IN));
}
canvas.drawRect(0, height/2f, width, height, mPaint);
}
@Override
protected void onTextChanged(CharSequence text, int start,
int lengthBefore, int lengthAfter) {
super.onTextChanged(text, start, lengthBefore, lengthAfter);
buildDrawingCache();
postInvalidate();
}
}
評論