Android View转Bitmap(View截图)
Android 从view获取图片/bitmap
view.buildDrawingCache(); Bitmap bitmap = view.getDrawingCache();
//获取后copy -> bitmap 避免 RuntimeException Canvas: trying to use a recycled bitmap android.graphics.Bitmap@5bdf8f5 if (bitmap != null){ imageview.setImageBitmap(bitmap.copy(Bitmap.Config.ARGB_8888,true)); }
//清缓存,用于多次获取不同的图片 view.destroyDrawingCache();
从GLSurfaceView截图
public void screenshot(){ int w = spWidth; int h = spHeight; int b[] = new int[(int) (w * h)]; int bt[] = new int[(int) (w * h)]; IntBuffer buffer = IntBuffer.wrap(b); buffer.position(0); GLES30.glReadPixels(0, 0, w, h, GLES30.GL_RGBA, GLES30.GL_UNSIGNED_BYTE, buffer); for (int i = 0; i < h; i++) { 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 - i - 1) * w + j] = pix1; } } Bitmap inBitmap = null; if (inBitmap == null || !inBitmap.isMutable() || inBitmap.getWidth() != w || inBitmap.getHeight() != h) { inBitmap = Bitmap.createBitmap(w, h, Bitmap.Config.RGB_565); } inBitmap.copyPixelsFromBuffer(buffer); inBitmap = Bitmap.createBitmap(bt, w, h, Bitmap.Config.RGB_565); ByteArrayOutputStream bos = new ByteArrayOutputStream(); inBitmap.compress(Bitmap.CompressFormat.JPEG, 90, bos); }
从SurfaceView截图(视频流等黑屏情况)
Bitmap bitmap = Bitmap.createBitmap(surfaceView.getWidth(), surfaceView.getHeight(), Bitmap.Config.ARGB_8888); PixelCopy.request(this, bitmap, copyResult -> { if (copyResult ==PixelCopy.SUCCESS){ callBack.onResult(bitmap); } },new Handler());
本文来自博客园,作者:西瓜皮不甜,转载请注明原文链接:https://www.cnblogs.com/Jieth/p/16576446.html
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