如何将图像放在另一个图像视图上(已经是设置图像)并将其保存为合并图像?
MoveBitmap类下面移动位图但没有任何返回我只想返回一个位图
我想实现 :在图像上放置一个图像(已经在imageview中设置)然后想要制作可移动的内部图像(第二个图像)并将它们保存为组合图像.....我很困惑如何实现这一点....任何人都可以告诉我 ?
移动位图的类
package "name";
import android.app.Activity;
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.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
public class MoveBitmap extends Activity {
public class TouchView extends View {
private Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
private float x, y;
boolean touching = false;
Bitmap bm = BitmapFactory.decodeResource(
getResources(),
R.drawable.n);
int bm_x = 0;
int bm_y = 0;
int bm_w = bm.getWidth();
int bm_h = bm.getHeight();
int bm_offsetx;
int bm_offsety;
boolean dm_touched = false;
public TouchView(Context context) {
super(context);
// TODO Auto-generated constructor stub
}
@Override
protected void onDraw(Canvas canvas) {
// TODO Auto-generated method stub
paint.setStyle(Paint.Style.STROKE);
paint.setStrokeWidth(1);
paint.setColor(Color.WHITE);
if(touching){
canvas.drawRect(x, y, x+bm_w, y+bm_h, paint);
}
canvas.drawBitmap(bm, bm_x, bm_y, paint);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
// TODO Auto-generated method stub
setMeasuredDimension(MeasureSpec.getSize(widthMeasureSpec),
MeasureSpec.getSize(heightMeasureSpec));
}
@Override
public boolean onTouchEvent(MotionEvent event) {
// TODO Auto-generated method stub
int action = event.getAction();
switch(action){
case MotionEvent.ACTION_MOVE:
x = event.getX();
y = event.getY();
touching = true;
if(dm_touched){
bm_x = (int)x - bm_offsetx;
bm_y = (int)y - bm_offsety;
}
break;
case MotionEvent.ACTION_DOWN:
x = event.getX();
y = event.getY();
touching = true;
//check if bm touched
if((x > bm_x)
&& (x < bm_x+bm_w)
&& (y > bm_y)
&& (y < bm_y+bm_h)){
bm_offsetx = (int)x - bm_x;
bm_offsety = (int)y - bm_y;
dm_touched = true;
}
break;
case MotionEvent.ACTION_UP:
default:
dm_touched = false;
touching = false;
}
invalidate();
return true;
}
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new TouchView(this));
}
}
答案 0 :(得分:1)
您可以在此方法中使用drawing cache from view
:
public static Bitmap loadBitmapFromView(View v) {
Bitmap bitmap;
v.setDrawingCacheEnabled(true);
bitmap = Bitmap.createBitmap(v.getDrawingCache());
v.setDrawingCacheEnabled(false);
}
但是你需要有两个ImageView的布局(例如,Frame Layout)。首先是背景(初始图像),第二个是可移动图像。然后以您需要的方式放置视图,然后使用FrameLayout作为视图使用上面的函数制作屏幕截图。
答案 1 :(得分:1)
public Bitmap screenShot(View view) {
Bitmap bitmap = Bitmap.createBitmap(view.getWidth(),
view.getHeight(), Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
view.draw(canvas);
return bitmap;
}