我正在下载波形(图像)并对它们进行解码。这些尺寸非常大。所以我的主要问题是，当我安装应用程序时，它运行良好。但过了一段时间后，Logcat 突然出现以下错误。我想我保存了太多波形。所以现在我需要删除保存的波形。那么如何删除保存的波形呢？
02-21 17:06:30.146: I/dalvikvm-heap(13642): Clamp target GC heap from 259.610MB to 256.000MB
02-21 17:06:30.146: D/dalvikvm(13642): GC_FOR_ALLOC freed 453K, 2% free 257622K/262108K, paused 113ms, total 113ms
02-21 17:06:30.154: I/dalvikvm-heap(13642): Forcing collection of SoftReferences for 2016016-byte allocation
02-21 17:06:30.232: I/dalvikvm-heap(13642): Clamp target GC heap from 259.609MB to 256.000MB
02-21 17:06:30.232: D/dalvikvm(13642): GC_BEFORE_OOM freed 1K, 2% free 257620K/262108K, paused 85ms, total 85ms
02-21 17:06:30.240: E/dalvikvm-heap(13642): Out of memory on a 2016016-byte allocation.
02-21 17:06:30.240: I/dalvikvm(13642): "AsyncTask #5" prio=5 tid=18 RUNNABLE
02-21 17:06:30.240: I/dalvikvm(13642): | group="main" sCount=0 dsCount=0 obj=0x41e3a290 self=0x40067e08
02-21 17:06:30.240: I/dalvikvm(13642): | sysTid=13699 nice=10 sched=0/0 cgrp=apps/bg_non_interactive handle=1492300400
02-21 17:06:30.240: I/dalvikvm(13642): | state=R schedstat=( 0 0 0 ) utm=3297 stm=228 core=1
02-21 17:06:30.240: I/dalvikvm(13642): at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
02-21 17:06:30.240: I/dalvikvm(13642): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:529)
02-21 17:06:30.240: I/dalvikvm(13642): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:601)
02-21 17:06:30.240: I/dalvikvm(13642): at com.blackcobrastudios.footballchants.manager.SoundCloudManager.readBitmapFromResponse(SoundCloudManager.java:493)
02-21 17:06:30.240: I/dalvikvm(13642): at com.blackcobrastudios.footballchants.manager.SoundCloudManager$TaskCaller.doInBackground(SoundCloudManager.java:323)
02-21 17:06:30.240: I/dalvikvm(13642): at com.blackcobrastudios.footballchants.manager.SoundCloudManager$TaskCaller.doInBackground(SoundCloudManager.java:1)
02-21 17:06:30.240: I/dalvikvm(13642): at android.os.AsyncTask$2.call(AsyncTask.java:287)
02-21 17:06:30.240: I/dalvikvm(13642): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
02-21 17:06:30.240: I/dalvikvm(13642): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
02-21 17:06:30.240: I/dalvikvm(13642): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
02-21 17:06:30.240: I/dalvikvm(13642): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
02-21 17:06:30.240: I/dalvikvm(13642): at java.lang.Thread.run(Thread.java:856)
02-21 17:06:30.240: D/skia(13642): --- decoder->decode returned false
我不明白发生了什么，并且由于出现这些错误，我的波形没有下载。
public Bitmap readBitmapFromResponse(HttpResponse response)
throws IOException, OutOfMemoryError {
HttpEntity entity = response.getEntity();
BufferedHttpEntity b_entity = new BufferedHttpEntity(entity);
InputStream inputStream = b_entity.getContent();
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeStream(inputStream, null, options);
options.inSampleSize = calculateInSampleSize(options, 1024, 16);
Log.d("WAVE_SIZE", "Sample size = " + options.inSampleSize);
options.inJustDecodeBounds = false;
inputStream.reset();
return BitmapFactory.decodeStream(inputStream);
}
public static int calculateInSampleSize(
BitmapFactory.Options options, int reqWidth, int reqHeight) {
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
final int halfHeight = height / 2;
final int halfWidth = width / 2;
while ((halfHeight / inSampleSize) > reqHeight
&& (halfWidth / inSampleSize) > reqWidth) {
inSampleSize *= 2;
}
}
return inSampleSize;
}
最佳答案
试试这个，如果你的 sdk 最低版本是 11 或更高，
将以下内容添加到 list 中的应用程序标签中
android:largeHeap="true"
有些人说这不是最好的方法，但在我的应用程序中它工作得很好，所以我建议你。
希望对你有所帮助。
关于java - 分配 2016016 字节时内存不足。错误？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/21934068/