Android 上传图片到服务器的实现，界面很简单，点击 【选择图片】，从图库里选择图片，显示到下面的imageview里，点击上传，就会上传到指定的服务器。
布局文件：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android=""
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="选择图片"
android:id="@+id/selectImage"
/>
<Button
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="上传图片"
android:id="@+id/uploadImage"
/>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/imageView"
/>
</LinearLayout>
Upload Activity：
public class Upload extends Activity implements OnClickListener {
private static String requestURL = ":8011/pd/upload/fileUpload.do";
private Button selectImage, uploadImage;
private ImageView imageView;
private String picPath = null;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.upload);
selectImage = (Button) this.findViewById(R.id.selectImage);
uploadImage = (Button) this.findViewById(R.id.uploadImage);
selectImage.setOnClickListener(this);
uploadImage.setOnClickListener(this);
imageView = (ImageView) this.findViewById(R.id.imageView);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.selectImage:
/***
* 这个是调用android内置的intent，来过滤图片文件 ，同时也可以过滤其他的
*/
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(intent, 1);
break;
case R.id.uploadImage:
if (picPath == null) {
Toast.makeText(Upload.this, "请选择图片！", 1000).show();
} else {
final File file = new File(picPath);
if (file != null) {
String request = UploadUtil.uploadFile(file, requestURL);
uploadImage.setText(request);
}
}
break;
default:
break;
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == Activity.RESULT_OK) {
/**
* 当选择的图片不为空的话，在获取到图片的途径
*/
Uri uri = data.getData();
Log.e(TAG, "uri = " + uri);
try {
String[] pojo = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, pojo, null, null, null);
if (cursor != null) {
ContentResolver cr = this.getContentResolver();
int colunm_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String path = cursor.getString(colunm_index);
/***
* 这里加这样一个判断主要是为了第三方的软件选择，比如：使用第三方的文件管理器的话，你选择的文件就不一定是图片了，
* 这样的话，我们判断文件的后缀名 如果是图片格式的话，那么才可以
*/
if (path.endsWith("jpg") || path.endsWith("png")) {
picPath = path;
Bitmap bitmap = BitmapFactory.decodeStream(cr
.openInputStream(uri));
imageView.setImageBitmap(bitmap);
} else {
alert();
}
} else {
alert();
}
} catch (Exception e) {
}
}
super.onActivityResult(requestCode, resultCode, data);
}