【发布时间】：2015-01-07 10:41:06
【问题描述】：
我正在尝试通过代码截取我的游戏截图并通过 Intent 共享它。我可以做这些事情，但是屏幕截图总是显示为黑色。以下是分享截图的相关代码：
View view = MainActivity.getView();
view.setDrawingCacheEnabled(true);
Bitmap screen = Bitmap.createBitmap(view.getDrawingCache(true));
.. save Bitmap
这是在 MainActivity 中：
view = new GameView(this);
view.setLayoutParams(new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.FILL_PARENT,
RelativeLayout.LayoutParams.FILL_PARENT));
public static SurfaceView getView() {
return view;
}
还有视图本身：
public class GameView extends SurfaceView implements SurfaceHolder.Callback {
private static SurfaceHolder surfaceHolder;
...etc
这就是我绘制所有内容的方式：
Canvas canvas = surfaceHolder.lockCanvas(null);
if (canvas != null) {
Game.draw(canvas);
...
好的，根据一些答案，我已经构建了这个：
public static void share() {
Bitmap screen = GameView.SavePixels(0, 0, Screen.width, Screen.height);
Calendar c = Calendar.getInstance();
Date d = c.getTime();
String path = Images.Media.insertImage(
Game.context.getContentResolver(), screen, "screenShotBJ" + d
+ ".png", null);
System.out.println(path + " PATH");
Uri screenshotUri = Uri.parse(path);
final Intent emailIntent = new Intent(
android.content.Intent.ACTION_SEND);
emailIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
emailIntent.putExtra(Intent.EXTRA_STREAM, screenshotUri);
emailIntent.setType("image/png");
Game.context.startActivity(Intent.createChooser(emailIntent,
"Share High Score:"));
}
Gameview 包含以下方法：
public static Bitmap SavePixels(int x, int y, int w, int h) {
EGL10 egl = (EGL10) EGLContext.getEGL();
GL10 gl = (GL10) egl.eglGetCurrentContext().getGL();
int b[] = new int[w * (y + h)];
int bt[] = new int[w * h];
IntBuffer ib = IntBuffer.wrap(b);
ib.position(0);
gl.glReadPixels(x, 0, w, y + h, GL10.GL_RGBA, GL10.GL_UNSIGNED_BYTE, ib);
for (int i = 0, k = 0; i < h; i++, k++) {
for (int j = 0; j < w; j++) {
int pix = b[i * w + j];
int pb = (pix >> 16) & 0xff;
int pr = (pix << 16) & 0x00ff0000;
int pix1 = (pix & 0xff00ff00) | pr | pb;
bt[(h - k - 1) * w + j] = pix1;
}
}
Bitmap sb = Bitmap.createBitmap(bt, w, h, Bitmap.Config.ARGB_8888);
return sb;
}
屏幕截图仍然是黑色的。我保存它的方式可能有问题吗？
我尝试了几种不同的方法来截取屏幕截图，但都没有奏效： 上面代码中显示的代码是最常用的代码。但这似乎不起作用。 这是使用 SurfaceView 的问题吗？如果是这样，为什么 view.getDrawingCache(true) 如果我不能使用它甚至存在，我该如何解决这个问题？
我的代码：
public static void share() {
// GIVES BLACK SCREENSHOT:
Calendar c = Calendar.getInstance();
Date d = c.getTime();
Game.update();
Bitmap.Config conf = Bitmap.Config.RGB_565;
Bitmap image = Bitmap.createBitmap(Screen.width, Screen.height, conf);
Canvas canvas = GameThread.surfaceHolder.lockCanvas(null);
canvas.setBitmap(image);
Paint backgroundPaint = new Paint();
backgroundPaint.setARGB(255, 40, 40, 40);
canvas.drawRect(0, 0, canvas.getWidth(), canvas.getHeight(),
backgroundPaint);
Game.draw(canvas);
Bitmap screen = Bitmap.createBitmap(image, 0, 0, Screen.width,
Screen.height);
canvas.setBitmap(null);
GameThread.surfaceHolder.unlockCanvasAndPost(canvas);
String path = Images.Media.insertImage(
Game.context.getContentResolver(), screen, "screenShotBJ" + d
+ ".png", null);
System.out.println(path + " PATH");
Uri screenshotUri = Uri.parse(path);
final Intent emailIntent = new Intent(
android.content.Intent.ACTION_SEND);
emailIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
emailIntent.putExtra(Intent.EXTRA_STREAM, screenshotUri);
emailIntent.setType("image/png");
Game.context.startActivity(Intent.createChooser(emailIntent,
"Share High Score:"));
}
谢谢。
【问题讨论】：
-
我的代码基于该帖子上已接受的答案。还是不行
-
点击here获取答案。它会给你帮助:)
-
@TastyLemons 请删除“工作代码：”字样。它误导了读者。
标签： android surfaceview