我试图将图像从我的 sdcard 发送到 php 服务器......我创建了 2 个类：第一个是 MainActivity.java，第二个是 Base64.java，它以 Base64 格式编码字节。
我的 MainActivity.java 是：
public class MainActivity extends Activity {
InputStream inputStream;
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.activity_main);
Bitmap bitmap = BitmapFactory.decodeFile("/sdcard/DCIM/Camera/1378889572299.jpg");
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 90, stream); //compress to which format you want.
byte [] byte_arr = stream.toByteArray();
String image_str = Base64.encodeBytes(byte_arr);
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
nameValuePairs.add(new BasicNameValuePair("image",image_str));
Log.e("ok", "1");
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://myserver.com/upload_image.php");
Log.e("ok", "3");
try {
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
Log.e("ok", "4");
HttpResponse response = httpclient.execute(httppost);
Log.e("ok", "5");
String the_string_response = convertResponseToString(response);
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public String convertResponseToString(HttpResponse response) throws IllegalStateException, IOException{
String res = "";
StringBuffer buffer = new StringBuffer();
inputStream = response.getEntity().getContent();
final int contentLength = (int) response.getEntity().getContentLength(); //getting content length…..
runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(MainActivity.this, "contentLength : " + contentLength, Toast.LENGTH_LONG).show();
}
});
if (contentLength < 0){
}
else{
byte[] data = new byte[512];
int len = 0;
try
{
while (-1 != (len = inputStream.read(data)) )
{
buffer.append(new String(data, 0, len)); //converting to string and appending to stringbuffer…..
}
}
catch (IOException e)
{
e.printStackTrace();
}
try
{
inputStream.close(); // closing the stream…..
}
catch (IOException e)
{
e.printStackTrace();
}
res = buffer.toString(); // converting stringbuffer to string…..
final String res2 = res;
runOnUiThread(new Runnable() {
@Override
public void run() {
Toast.makeText(MainActivity.this, "Result : " + res2, Toast.LENGTH_LONG).show();
}
});
//System.out.println("Response => " + EntityUtils.toString(response.getEntity()));
}
return res;
}
}
我有这个错误：
........OutOfMemoryError
….at java.lang.AbstractStringBuilder.(AbstractStringBuilder.java:81)
….at java.lang.StringBuilder.(StringBuilder.java:68)
….at java.net.URLEncoder.encode(URLEncoder.java:98)
….at org.apache.http.client.utils.URLEncodedUtils.encode(URLEncodedUtils.java:184)
….at org.apache.http.client.utils.URLEncodedUtils.format(URLEncodedUtils.java:163)
….at org.apache.http.client.entity.UrlEncodedFormEntity.(UrlEncodedFormEntity.java:71)
….at com.example.imageuploadonserver.MainActivity.onCreate(MainActivity.java:43)
第 43 行是：httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
我对我的代码进行了一些更改......并将图像源从我的 sdcard 替换为我的 drawabel.ic_luncher ：
Bitmap bitmap = BitmapFactory.decodeFile(“/sdcard/DCIM/Camera/1378889572299.jpg”);
这样 ：
Bitmap bitmap = BitmapFactory.decodeResource(getResources(),R.drawable.ic_launcher);
它成功地工作了！！！！
我google了很多，但是要么我使用了错误的关键字，要么互联网上没有简单的解决方案。我希望这里有人可以帮助我。
最好的问候和提前感谢，法德尔。