在解码位图时捕获 OutOfMemoryError [英] Catching OutOfMemoryError in decoding Bitmap

问题描述

即使您已经尝试了一些减少内存使用的方法，捕获 OutOfMemoryError 是否是一个好习惯?或者我们应该只是不捕捉异常?哪种做法更好?

Is it a good practice to catch OutOfMemoryError even you have tried some ways to reduce memory usage? Or should we just not catching the exception? Which one is better practice?

try {
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inSampleSize = 4;
    bitmap = BitmapFactory.decodeFile(file, options);
} catch (OutOfMemoryError e) {
    e.printStackTrace();
}

谢谢

推荐答案

捕捉它一次然后再给 decodeFile 一次机会是一个好习惯.抓住它并调用 System.gc() 并再次尝试解码.调用System.gc()后很有可能会起作用.

It's good practice to catch it once and give decodeFile another chance. Catch it and call System.gc() and try decoding again. There is a high probability that it will work after calling System.gc().

try {
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inSampleSize = 4;
    bitmap = BitmapFactory.decodeFile(file, options);
 } catch (OutOfMemoryError e) {
    e.printStackTrace();

    System.gc();

    try {
        bitmap = BitmapFactory.decodeFile(file);
    } catch (OutOfMemoryError e2) {
      e2.printStackTrace();
      // handle gracefully.
    }
}

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