如何确保请求的图像分辨率不会抛出内存不足异常

Question

有没有一种方法可以确保调用函数以获取图像不会太多而无法容纳到可用内存中？

int[] intBuf = util.getAbgrRect(page, x, y, w, h, wPix, hPix);

Answer 1

Basically any kind of guessing method is going to be unreliable. You could make sure that you've got plenty of memory available on your system, and set some large enough hard limits that you declare shouldn't be exceeded.

If all else fails, you can always do the unthinkable and write

int[] intBuf = null;
try {
    intBuf = util.getAbgrRect(page, x, y, w, h, wPix, hPix);
} catch(OutOfMemoryError e) {
    // abort processing
}

It's not pretty, but it'll work. Just be careful.