【发布时间】：2013-05-18 20:49:39
【问题描述】：
我正在尝试通过网络上传图像，但我的应用程序在 bw 中不断崩溃 我的代码是
package com.example.imgeup;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStream;
import java.util.ArrayList;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import com.example.imgeup.Base64;
import com.loopj.android.http.AsyncHttpClient;
import com.loopj.android.http.AsyncHttpResponseHandler;
import com.loopj.android.http.RequestParams;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;
public class MainActivity extends Activity {
ImageView mv;
InputStream is;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mv = (ImageView)findViewById(R.id.imageView1);
}
public void Button(View view)
{
try{
//String path = "/mnt/sdcard/Pictures/IWMP-Images/IMG_20130523_164101.jpg";
String path = Environment.getExternalStorageDirectory()+ "/Pictures/IWMP-Images/IMG_20130523_161730.jpg";
File imgFile = new File(path);
if(imgFile.exists())
{
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
mv.setImageBitmap(myBitmap);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
myBitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos); //bm is the bitmap object
byte[] b = baos.toByteArray();
// String encodedImage = Base64.encodeToString(byteArrayImage, Base64.DEFAULT);
String ba1=Base64.encodeBytes(b);
// String ba1="hi";
ArrayList<NameValuePair> nameValuePairs = new
ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("image",ba1));
try{
/* HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new
HttpPost("http://192.168.1.4:80/up.php");
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();*/
AsyncHttpClient client = new AsyncHttpClient();
RequestParams rp = new RequestParams();
rp.put("image", ba1);
client.post("http://192.168.1.4:80/up.php", rp, new AsyncHttpResponseHandler() {
public final void onSuccess(String response) {
Toast.makeText(getApplicationContext(),"SUCCESS", Toast.LENGTH_LONG).show();
}
@Override
public void onFailure(Throwable e, String response) {
e.printStackTrace();
Log.d("Exception", e.toString());
Toast.makeText(getApplicationContext(),e.toString(), Toast.LENGTH_LONG).show();
}
});
}
catch(Exception e){
Log.e("log_tag", "Error in http connection "+e.toString());
}
}
else
Toast.makeText(this.getBaseContext(),"no IMAGE IS PRESENT'",Toast.LENGTH_SHORT).show();
}
catch(Exception e)
{
System.out.println(e.toString());
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
使用 simple ba1="hi" 时，toast 会打印成功，但使用 base64 时，它会崩溃。同样在base64中转换图像时，它需要很多时间..任何关于硬件的想法可以减少这种情况。 请帮忙谢谢..
我的php也是
`
$base=$_REQUEST['image'];
//echo $base;
// base64 encoded utf-8 string
$binary=base64_decode($base);
// binary, utf-8 bytes
header('Content-Type: bitmap; charset=utf-8');
print($binary);
//$theFile = base64_decode($image_data);
//$file = fopen('test.jpg', 'wb');
//fwrite($file, $binary);
//fclose($file);
//echo '<img src=test.jpg>';
?>
我参考了 http://blog.sptechnolab.com/2011/03/09/android/android-upload-image-to-server/
我的日志.error
`
05-23 18:51:27.719: E/dalvikvm-heap(7622): Out of memory on a 14862728-byte allocation.
05-23 18:51:27.782: E/AndroidRuntime(7622): FATAL EXCEPTION: main
05-23 18:51:27.782: E/AndroidRuntime(7622): java.lang.IllegalStateException: Could not execute method of the activity
05-23 18:51:27.782: E/AndroidRuntime(7622): at android.view.View$1.onClick(View.java:2082)
05-23 18:51:27.782: E/AndroidRuntime(7622): at android.view.View.performClick(View.java:2461)
05-23 18:51:27.782: E/AndroidRuntime(7622): at android.view.View$PerformClick.run(View.java:8890)
05-23 18:51:27.782: E/AndroidRuntime(7622): at android.os.Handler.handleCallback(Handler.java:587)
05-23 18:51:27.782: E/AndroidRuntime(7622): at android.os.Handler.dispatchMessage(Handler.java:92)
05-23 18:51:27.782: E/AndroidRuntime(7622): at
android.os.Looper.loop(Looper.java:123)
05-23 18:51:27.782: E/AndroidRuntime(7622): at android.app.ActivityThread.main(ActivityThread.java:4632)
05-23 18:51:27.782: E/AndroidRuntime(7622): at java.lang.reflect.Method.invokeNative(Native Method)
05-23 18:51:27.782: E/AndroidRuntime(7622): at java.lang.reflect.Method.invoke(Method.java:521)
05-23 18:51:27.782: E/AndroidRuntime(7622): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
05-23 18:51:27.782: E/AndroidRuntime(7622): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
05-23 18:51:27.782: E/AndroidRuntime(7622): at dalvik.system.NativeStart.main(Native Method)
05-23 18:51:27.782: E/AndroidRuntime(7622): Caused by: java.lang.reflect.InvocationTargetException
05-23 18:51:27.782: E/AndroidRuntime(7622): at com.example.imgeup.MainActivity.Button(MainActivity.java:89)
05-23 18:51:27.782: E/AndroidRuntime(7622): at java.lang.reflect.Method.invokeNative(Native Method)
05-23 18:51:27.782: E/AndroidRuntime(7622): at java.lang.reflect.Method.invoke(Method.java:521)
05-23 18:51:27.782: E/AndroidRuntime(7622): at android.view.View$1.onClick(View.java:2077)
05-23 18:51:27.782: E/AndroidRuntime(7622): ... 11 more
05-23 18:51:27.782: E/AndroidRuntime(7622): Caused by: java.lang.OutOfMemoryError
05-23 18:51:27.782: E/AndroidRuntime(7622): at java.lang.AbstractStringBuilder.enlargeBuffer(AbstractStringBuilder.java:97)
05-23 18:51:27.782: E/AndroidRuntime(7622): at java.lang.AbstractStringBuilder.append0(AbstractStringBuilder.java:144)
05-23 18:51:27.782: E/AndroidRuntime(7622): at java.lang.StringBuffer.append(StringBuffer.java:126)
05-23 18:51:27.782: E/AndroidRuntime(7622): at java.net.URLEncoder.encode(URLEncoder.java:111)
05-23 18:51:27.782: E/AndroidRuntime(7622): at org.apache.http.client.utils.URLEncodedUtils.encode(URLEncodedUtils.java:184)
05-23 18:51:27.782: E/AndroidRuntime(7622): at org.apache.http.client.utils.URLEncodedUtils.format(URLEncodedUtils.java:163)
05-23 18:51:27.782: E/AndroidRuntime(7622): at org.apache.http.client.entity.UrlEncodedFormEntity.<init>(UrlEncodedFormEntity.java:57)
05-23 18:51:27.782: E/AndroidRuntime(7622): at com.loopj.android.http.RequestParams.getEntity(RequestParams.java:266)
05-23 18:51:27.782: E/AndroidRuntime(7622): at com.loopj.android.http.AsyncHttpClient.paramsToEntity(AsyncHttpClient.java:589)
05-23 18:51:27.782: E/AndroidRuntime(7622): at com.loopj.android.http.AsyncHttpClient.post(AsyncHttpClient.java:390)
05-23 18:51:27.782: E/AndroidRuntime(7622): at com.loopj.android.http.AsyncHttpClient.post(AsyncHttpClient.java:379)
05-23 18:51:27.782: E/AndroidRuntime(7622): ... 15 more
`
【问题讨论】：
-
在哪里崩溃，哪一行？另外，您收到什么错误消息？图像有多大，转换为 b64 后是否可能使用大量 RAM？我不确定您可以使用的确切最大内存，但我认为它相对较小。
-
先生，它在 client.post("192.168.1.4:80/up.php", rp, new AsyncHttpResponseHandler() 上崩溃了，是的，它显示内存不足.. 总和时间。在日志中. 做什么。
-
您正在丢弃异常而不打印堆栈跟踪。 -1
-
common dnt dwngrade it man..
-
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