1：SurfaceView加载长图，移到。可以充当背景 效果截图
2：View (淡入淡出动画没实现：记录下)
package com.guoxw.surfaceviewimage; import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView; import java.util.Timer;
import java.util.TimerTask; /**
* Created by guoxw on 2017/12/6.
* SurfaceView 加载长图缓慢移动显示，充当背景。
*/ public class SurfaceViewImage extends SurfaceView implements SurfaceHolder.Callback { private static final String TAG = "SurfaceViewTest1";
private SurfaceHolder surfaceHolder = null;
private int imageH = 0, imageW = 0;
private Bitmap bitmap = null;
private Paint mBitPaint = null;
/***每次移动相对于起始点的距离*/
private int gap = 0;
private Timer timer;
private TimerTask timerTask;
private int surfaceW, surfaceH;
private ScroListener scroListener = null;
private Canvas canvas;
/***设置透明度 0-255 */
private int alphaValueAdd = 0;
private int alphaValueDec = 255;
private boolean isVisibility = true;
private int transType = 1; public SurfaceViewImage(Context context, AttributeSet attrs) {
super(context, attrs);
Log.d(TAG, "SurfaceViewTest1: ");
bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.bannerbg2);
imageH = bitmap.getHeight();
imageW = bitmap.getWidth();
mBitPaint = new Paint();
mBitPaint.setColor(Color.RED);
mBitPaint.setAlpha(alphaValueDec);
Log.d(TAG, "SurfaceViewTest1: --寛高：" + imageW + "--" + imageH);
surfaceHolder = getHolder();
surfaceHolder.addCallback(this); } private void imageDraw() {
Log.d(TAG, "imageDraw: ");
switch (transType) {
case 1:
canvas = surfaceHolder.lockCanvas(new Rect(0, 0, surfaceW, surfaceW));
if (gap < (imageW - surfaceW)) {
if (alphaValueAdd <= 255) {
alphaValueAdd += 5;
} else {
gap += 1;
}
} else if (gap >= (imageW - surfaceW)) {
alphaValueDec -= 5;
scroListener.scroTopListener();
if (alphaValueDec == 0) {
Log.d(TAG, "imageDraw: 次数- 000");
// scroListener.scroTopListener();
}
}
if (alphaValueAdd <= 255) {
mBitPaint.setAlpha(alphaValueAdd);
} else {
mBitPaint.setAlpha(alphaValueDec);
}
Rect srcRect = new Rect(0 + gap, 1000, surfaceW + gap, surfaceH + 1000);
Rect dstRect = new Rect(0, 0, surfaceW, surfaceH);
Log.d(TAG, "imageDraw: image数据alpha值：--" + alphaValueDec);
canvas.drawBitmap(bitmap, srcRect, dstRect, mBitPaint);
surfaceHolder.unlockCanvasAndPost(canvas);
break;
case 2:
break;
case 3:
break;
} } public void setBitmap(Bitmap bitmap) {
resetImageData();
this.bitmap = bitmap;
} private void resetImageData() {
imageH = bitmap.getHeight();
imageW = bitmap.getWidth();
gap = 0;
alphaValueDec = 255;
alphaValueAdd = 0;
} /**
* 移动完时，设置监听，更换image
* @param scroListener
*/
public void setScroListener(ScroListener scroListener) {
this.scroListener = scroListener;
} @Override
public void surfaceCreated(SurfaceHolder holder) {
surfaceH = getHeight();
surfaceW = getWidth();
Log.d(TAG, "surfaceCreated: 控件的寛高：" + surfaceW + "---" + surfaceH); // 1196*574
timer = new Timer();
timerTask = new TimerTask() {
@Override
public void run() { while (isVisibility) {
imageDraw();
} }
};
timer.schedule(timerTask, 100, 60); } @Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { Log.d(TAG, "surfaceChanged: "); } @Override
public void surfaceDestroyed(SurfaceHolder holder) {
Log.d(TAG, "surfaceDestroyed: ");
try {
Canvas canvas = surfaceHolder.lockCanvas(null);
canvas.drawColor(Color.BLACK);
surfaceHolder.unlockCanvasAndPost(canvas);
} catch (Exception ex) {
} } public interface ScroListener {
void scroTopListener();
} public void destory() { if (timer != null) {
timer.cancel();
timerTask = null;
timer = null;
} } }
3.修改下
public class SurfaceViewImage extends SurfaceView implements SurfaceHolder.Callback {
private static final String TAG = "SurfaceViewTest1";
private SurfaceHolder surfaceHolder = null;
private int imageH = 0, imageW = 0;
private Bitmap bitmap = null;
private Paint mBitPaint = null;
/***每次移动相对于起始点的距离*/
private int gap = 0;
private int oneGap=2;
private Timer timer;
private TimerTask timerTask;
private int surfaceW, surfaceH;
private Canvas canvas;
public boolean isDraw = false;
/*** 正方向移动完毕后，反向移动，如此循环*/
private boolean PosDirection=true;
public SurfaceViewImage(Context context, AttributeSet attrs) {
super(context, attrs);
Log.d(TAG, "SurfaceViewTest1: ");
bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.banner2);
imageH = bitmap.getHeight();
imageW = bitmap.getWidth();
mBitPaint = new Paint();
mBitPaint.setColor(Color.RED);
Log.d(TAG, "SurfaceViewTest1: --寛高：" + imageW + "--" + imageH);
surfaceHolder = getHolder();
surfaceHolder.addCallback(this);
}
private void imageDraw() {
if(isDraw){
canvas = surfaceHolder.lockCanvas(new Rect(0, 0, surfaceW, imageH));
if(PosDirection){
if (gap < (imageW - surfaceW)) {
gap += oneGap;
} else if (gap >= (imageW - surfaceW)) {
PosDirection=false;
}
}else {
if (gap >0) {
gap -= oneGap;
} else if (gap <=0) {
PosDirection=true;
}
}
Rect srcRect = new Rect(0 + gap, 0, surfaceW + gap, imageH);
Rect dstRect = new Rect(0, 0, surfaceW, surfaceH);
canvas.drawBitmap(bitmap, srcRect, dstRect, mBitPaint);
surfaceHolder.unlockCanvasAndPost(canvas);
}
}
public void setBitmap(Bitmap bitmap) {
Log.d(TAG, "setBitmap: change photo");
isDraw = false;
try {
Thread.sleep(100);
//this.bitmap.recycle();
Log.d(TAG, "setBitmap: change photo1");
this.bitmap = bitmap;
resetImageData();
Log.d(TAG, "setBitmap: change photo2");
} catch (InterruptedException e) {
e.printStackTrace();
}
isDraw = true;
Log.d(TAG, "setBitmap: change photo3");
}
private void resetImageData() {
imageH = bitmap.getHeight();
imageW = bitmap.getWidth();
gap = 0;
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
Log.d(TAG, "surfaceCreated: ");
//if(bitmap==null){
// bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.banner2);
// }
surfaceH = getHeight();
surfaceW = getWidth();
isDraw=true;
timer = new Timer();
timerTask = new TimerTask() {
@Override
public void run() {
if (isDraw) {
imageDraw();
}
}
};
timer.schedule(timerTask, 300, 50);
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
Log.d(TAG, "surfaceChanged: ");
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
Log.d(TAG, "surfaceDestroyed: ");
isDraw=false;
try {
Thread.sleep(60);
// Canvas canvas = surfaceHolder.lockCanvas(null);
// canvas.drawColor(Color.BLACK);
// surfaceHolder.unlockCanvasAndPost(canvas);
timerTask.cancel();
timer.cancel();
timerTask=null;
timer=null;
// bitmap.recycle();
// bitmap=null;
} catch (InterruptedException ex) {
ex.printStackTrace();
}
}
}
Code:
https://pan.baidu.com/s/1o7XYOsy SurfaceViewImage.zip