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您好，当我想在 android 中传输图像时，我遇到了这个错误。我不明白为什么。

编辑：我找到了理由。理由是他们没有足够的内存。如何更改允许的内存？ 

   EDIT:FATAL EXCEPTION: main
   java.lang.OutOfMemoryError

07-18 08:50:35.169: E/AndroidRuntime(16772):    at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:587)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:389)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at P12.transferImage(P12.java:503)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at P12.access$4(P12.java:487)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at P12$6.onClick(P12.java:313)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at android.view.View.performClick(View.java:3644)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at android.view.View$PerformClick.run(View.java:14313)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at android.os.Handler.handleCallback(Handler.java:605)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at android.os.Handler.dispatchMessage(Handler.java:92)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at android.os.Looper.loop(Looper.java:137)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at android.app.ActivityThread.main(ActivityThread.java:4514)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at java.lang.reflect.Method.invokeNative(Native Method)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at java.lang.reflect.Method.invoke(Method.java:511)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:993)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:760)
07-18 08:50:35.169: E/AndroidRuntime(16772):    at dalvik.system.NativeStart.main(Native Method)
07-18 08:55:44.474: I/Process(16772): Sending signal. PID: 16772 SIG: 9
07-18 08:55:44.764: D/dalvikvm(17129): GC_FOR_ALLOC freed 65K, 4% free 12756K/13187K, paused 16ms

问题是在线的

Bitmap imgTaken = BitmapFactory.decodeFile(from, options);

url文件是正确的我已经验证

这是我的转移功能的开始。

private void transferImage(String from,String imageName) throws IOException {
    Log.i("debug","from:"+from.toString());
    // we want remote host, user name and password
    if (from == null || from.length() == 0) {
        Toast.makeText(getBaseContext(), getString(R.string.errorFTPparameters), Toast.LENGTH_LONG).show();
        setResult(11);
        finish();
    }

    try {
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inTempStorage = new byte[16*1024];

        // byte array transfers
        Bitmap imgTaken = BitmapFactory.decodeFile(from, options);

        if (imgTaken == null) {
            Toast.makeText(getBaseContext(), getString(R.string.errorcreatingstream), Toast.LENGTH_LONG).show();

            setResult(11);
            finish();
        }

        // transforming image into byte array
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        imgTaken.compress(CompressFormat.JPEG, 60, bos);
        byte[] bitmapdata = bos.toByteArray();

        // base64 encoding of the bytes in a string
        String bos1 = Base64.encodeBytes(bitmapdata);
        //...
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1 回答 1

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好吧，您的图像太大，无法放入 Android 为您分配的内存中。如果您不需要全分辨率图片，请尝试使用以下方法将图像尺寸预先设置为更小inSampleSize：

options.inSampleSize = 2 //gives you an image with half the height/width

如果您需要全分辨率图片，请说明您想要用您的transferImage功能实现什么，那么也许我们可以为您提供另一种方式。

于 2012-07-18T08:09:27.860 回答