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我想在我的android应用程序中绘制背景图像。但是,当我尝试将其绘制为位图时,它说该文件未找到。你可以使用你的项目目录中创建的自定义文件夹中的图像吗从文件夹加载和绘制图像到android
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.util.Log;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public class MainGamePanel extends SurfaceView implements SurfaceHolder.Callback {
Bitmap BackgroundImage;
private static final String TAG = MainGamePanel.class.getSimpleName();
private MainThread thread;
public MainGamePanel(Context context) {
super(context);
// adding the callback (this) to the surface holder to intercept events
getHolder().addCallback(this);
// creating game thread
thread = new MainThread(getHolder(), this);
// make the GmaePanel focusable so it can handle events
setFocusable(true);
}
@Override
public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) {
// TODO Auto-generated method stub
}
@Override
public void surfaceCreated(SurfaceHolder arg0) {
thread.setRunning(true);
thread.start();
Background b1 = new Background();
BackgroundImage = b1.loadBackgroundImage();
}
@Override
public void surfaceDestroyed(SurfaceHolder arg0) {
Log.d(TAG, "Surface is being destroyed");
boolean retry = true;
while(retry){
try{
thread.join();
retry = false;
} catch (InterruptedException e) {
// try again to shutdown thread
}
}
Log.d(TAG, "Thread was shut down cleanly");
}
@Override
public boolean onTouchEvent(MotionEvent event){
return super.onTouchEvent(event);
}
@Override
protected void onDraw(Canvas canvas){
canvas.drawBitmap(BackgroundImage, 0, 0, null);
}
}
------背景类------
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
public class Background {
private String imageLoc;
public Background(){
}
public String getImageLoc() {
return imageLoc;
}
public void setImageLoc(String imageLoc) {
this.imageLoc = imageLoc;
}
public Bitmap loadBackgroundImage(){
Bitmap background = BitmapFactory.decodeFile("/Users/Justin/Documents/Project_WinterGalaxy/AndroidGalaxy/images/Background.png");
return background;
}
}