我只需要设置一个高分辨率图像，但想知道是否可以在 xml 中设置它。即使它比手机屏幕大，我也希望能够设置它。
编辑：我想添加一个巨大的图像，所以用户必须滚动它。类似于地图的东西，但需要在其上添加可点击区域，我只知道如何在 xml 中执行此操作。这就是为什么我要求使用不在 java 中的 xml 添加图像。但是如果有人能告诉我如何在java中添加可点击区域。这会做得更好，因为我已经有了图像，但使用 java 并且它能够滚动。
编辑：这是我从以下位置获得代码的地方：Anddev.org我使用的是完全相同的代码，只是使用了其他图像。
查看此示例代码以了解如何滚动大于屏幕的图像。它还进行位图缓存以加速复杂图像的绘制，并展示如何响应图像上任意点的长按和双击。
好的，我将其发布为答案，只是因为发布它会更容易。（它没有按照我想要的方式工作，但我得到了一些东西）我想分享这个，以便其他知道如何操作的人可以在这里帮助我找到解决方案。这是代码
package com.example.largeimagescroller;
import android.app.Activity;
import android.os.Bundle;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.view.Display;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.Toast;
public class LargeImageScroller extends Activity {
// Physical display width and height.
private static int displayWidth = 0;
private static int displayHeight = 0;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// displayWidth and displayHeight will change depending on screen
// orientation. To get these dynamically, we should hook
// onSizeChanged().
// This simple example uses only landscape mode, so it's ok to get them
// once on startup and use those values throughout.
Display display = ((WindowManager) getSystemService(Context.WINDOW_SERVICE))
.getDefaultDisplay();
displayWidth = display.getWidth();
displayHeight = display.getHeight();
// SampleView constructor must be constructed last as it needs the
// displayWidth and displayHeight we just got.
setContentView(new SampleView(this));
}
private static class SampleView extends View {
private static Bitmap bmLargeImage; // bitmap large enough to be
// scrolled
private static Rect displayRect = null; // rect we display to
private Rect scrollRect = null; // rect we scroll over our bitmap with
private int scrollRectX = 0; // current left location of scroll rect
private int scrollRectY = 0; // current top location of scroll rect
private float scrollByX = 0; // x amount to scroll by
private float scrollByY = 0; // y amount to scroll by
private float startX = 0; // track x from one ACTION_MOVE to the next
private float startY = 0; // track y from one ACTION_MOVE to the next
public SampleView(Context context) {
super(context);
// Destination rect for our main canvas draw. It never changes.
displayRect = new Rect(0, 0, displayWidth, displayHeight);
// Scroll rect: this will be used to 'scroll around' over the
// bitmap in memory. Initialize as above.
scrollRect = new Rect(0, 0, displayWidth, displayHeight);
// Load a large bitmap into an offscreen area of memory.
bmLargeImage = BitmapFactory.decodeResource(getResources(),
R.drawable.alienware);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
//This code define what to do if you touch the x and y coordinates.
float x1 = event.getX();
float y1 = event.getY();
switch (event.getActionMasked()){
case MotionEvent.ACTION_DOWN:
if (x1>150 & x1<200 & y1>400 & y1<500){
Toast.makeText(getContext(), "Touched the coordinates.", Toast.LENGTH_SHORT).show();
}
}
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
// Remember our initial down event location.
startX = event.getRawX();
startY = event.getRawY();
break;
case MotionEvent.ACTION_MOVE:
float x = event.getRawX();
float y = event.getRawY();
// Calculate move update. This will happen many times
// during the course of a single movement gesture.
scrollByX = x - startX; // move update x increment
scrollByY = y - startY; // move update y increment
startX = x; // reset initial values to latest
startY = y;
invalidate(); // force a redraw
break;
}
return true; // done with this event so consume it
}
@Override
protected void onDraw(Canvas canvas) {
// Our move updates are calculated in ACTION_MOVE in the opposite
// direction
// from how we want to move the scroll rect. Think of this as
// dragging to
// the left being the same as sliding the scroll rect to the right.
int newScrollRectX = scrollRectX - (int) scrollByX;
int newScrollRectY = scrollRectY - (int) scrollByY;
// Don't scroll off the left or right edges of the bitmap.
if (newScrollRectX < 0)
newScrollRectX = 0;
else if (newScrollRectX > (bmLargeImage.getWidth() - displayWidth))
newScrollRectX = (bmLargeImage.getWidth() - displayWidth);
// Don't scroll off the top or bottom edges of the bitmap.
if (newScrollRectY < 0)
newScrollRectY = 0;
else if (newScrollRectY > (bmLargeImage.getHeight() - displayHeight))
newScrollRectY = (bmLargeImage.getHeight() - displayHeight);
// We have our updated scroll rect coordinates, set them and draw.
scrollRect.set(newScrollRectX, newScrollRectY, newScrollRectX
+ displayWidth, newScrollRectY + displayHeight);
Paint paint = new Paint();
canvas.drawBitmap(bmLargeImage, scrollRect, displayRect, paint);
// Reset current scroll coordinates to reflect the latest updates,
// so we can repeat this update process.
scrollRectX = newScrollRectX;
scrollRectY = newScrollRectY;
}
}
}
我rec正在使用的应用程序。（由于触摸事件不适用于 cpu 模拟器，所以我在手机上进行了操作）
http://www.youtube.com/watch?v=NrszZoDenXE&feature=youtube_gdata
正如您所看到的，它正在触摸，但它会随着滚动矩形移动，所以问题是：我怎样才能触摸以保持在图像中，所以它不会随着滚动矩形移动？
谢谢