从相册获取图片及调用相机拍照获取图片，最后上传图片到服务器
调用相机拍照获取图片：
跳转到到拍照界面：
Intent takeIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
//下面这句指定调用相机拍照后的照片存储的路径
mSzImageFileName = Long.toString(System.currentTimeMillis()) + ".png";
takeIntent.putExtra(MediaStore.EXTRA_OUTPUT,
Uri.fromFile(new File(Environment.getExternalStorageDirectory(), mSzImageFileName)));
startActivityForResult(takeIntent, REQUEST_TAKE_PHOTO);
从相册获取图片：
从相册选择图片：
Intent pickIntent = new Intent(Intent.ACTION_PICK, null);
// 如果要限制上传到服务器的图片类型时可以直接写如：image/jpeg 、 image/png等的类型
pickIntent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");
startActivityForResult(pickIntent, REQUEST_PICK_PHOTO);
从相册返回一张图片或者拍照返回一张图片：
监听返回结果：
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
case REQUEST_PICK_PHOTO:// 直接从相册获取
try {
startPhotoZoom(data.getData());//跳转到截图界面
} catch (NullPointerException e) {
e.printStackTrace();// 用户点击取消操作
}
break;
case REQUEST_TAKE_PHOTO:// 调用相机拍照
mHandler.postDelayed(new Runnable() {
@Override
public void run() {
File temp = new File(Environment.getExternalStorageDirectory(), mSzImageFileName);
if (temp.exists()) {
startPhotoZoom(Uri.fromFile(temp));//跳转到截图界面
}
}
}, 1000);
break;
case REQUEST_CUT_PHOTO:// 取得裁剪后的图片
if (data != null) {
setPicToView(data);//保存和上传图片
}
break;
}
super.onActivityResult(requestCode, resultCode, data);
}
返回图片后进行裁剪：
裁剪图片：
/**
* 裁剪图片方法实现
*/
private void startPhotoZoom(Uri uri) {
LogUtil.e("PersonalInformationActivity", "onActivityResult uri" + uri);
if (uri != null) {
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(uri, "image/*");
// 下面这个crop=true是设置在开启的Intent中设置显示的VIEW可裁剪
intent.putExtra("crop", "true");
// aspectX aspectY 是宽高的比例
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
// outputX outputY 是裁剪图片宽高
intent.putExtra("outputX", 300);
intent.putExtra("outputY", 300);
intent.putExtra("return-data", true);
startActivityForResult(intent, REQUEST_CUT_PHOTO);
}
}
裁剪后保存和上传图片：
/**
* 保存裁剪之后的图片数据
*
* @param picdata
*/
private void setPicToView(Intent picdata) {
Bundle extras = picdata.getExtras();
if (extras != null) {
// 取得SDCard图片路径做显示
Bitmap photo = extras.getParcelable("data");
mSzImageFileName = Long.toString(System.currentTimeMillis()) + ".png";
mImgUrlPath = Environment.getExternalStorageDirectory() + File.separator + "cut_image" + File.separator + mSzImageFileName;
try {
NetUtil.saveBitmapToFile(photo, mImgUrlPath);
} catch (IOException e) {
e.printStackTrace();
}
// 新线程后台上传服务端
new Thread(uploadImageRunnable).start();
}
}
上传图片的线程：
Runnable uploadImageRunnable = new Runnable() {
@Override
public void run() {
Map<String, String> params = new HashMap<>();
params.put("mid", mSzId);//上传参数
Map<String, File> files = new HashMap<>();
files.put("myUpload", new File(mImgUrlPath));//上传文件路径
try {
String json = NetUtil.uploadFile(Constants.URL_EDIT_IMG, params, files);
//json为服务器返回的数据，可自己解析（如json解析）取得想要的数据
}
}
} catch (IOException e) {
e.printStackTrace();
}
}
};
保存图片和上传图片的工具类NetUtil ：
public class NetUtil {//上传图片到服务器public static String uploadFile(String url, Map<String, String> params, Map<String, File> files)throws IOException {String tempStr = null;String BOUNDARY = java.util.UUID.randomUUID().toString();String PREFIX = "--", LINEND = "\r\n";String MULTIPART_FROM_DATA = "multipart/form-data";String CHARSET = "UTF-8";HttpURLConnection conn = null;try {URL uri = new URL(url);conn = (HttpURLConnection) uri.openConnection();conn.setReadTimeout(10 * 1000); // 缓存的最长时间conn.setDoInput(true);// 允许输入conn.setDoOutput(true);// 允许输出conn.setUseCaches(false); // 不允许使用缓存conn.setRequestMethod("POST");conn.setRequestProperty("connection", "keep-alive");conn.setRequestProperty("Charsert", "UTF-8");conn.setRequestProperty("Content-Type", MULTIPART_FROM_DATA + ";boundary=" + BOUNDARY);// 首先组拼文本类型的参数StringBuilder sb = new StringBuilder();for (Map.Entry<String, String> entry : params.entrySet()) {sb.append(PREFIX);sb.append(BOUNDARY);sb.append(LINEND);sb.append("Content-Disposition: form-data; name=\"" + entry.getKey() + "\"" + LINEND);sb.append("Content-Type: text/plain; charset=" + CHARSET + LINEND);sb.append("Content-Transfer-Encoding: 8bit" + LINEND);sb.append(LINEND);sb.append(entry.getValue());sb.append(LINEND);}LogUtil.e("NetUtil", "uploadFile sb:" + sb.toString());DataOutputStream outStream = new DataOutputStream(conn.getOutputStream());outStream.write(sb.toString().getBytes());// 发送文件数据if (files != null)for (Map.Entry<String, File> file : files.entrySet()) {StringBuilder sb1 = new StringBuilder();sb1.append(PREFIX);sb1.append(BOUNDARY);sb1.append(LINEND);sb1.append("Content-Disposition: form-data; name="+file.getKey()+"; filename=\""+ file.getValue() + "\"" + LINEND);sb1.append("Content-Type: application/octet-stream; charset=" + CHARSET + LINEND);sb1.append(LINEND);LogUtil.e("NetUtil", "uploadFile sb1:" + sb1.toString());outStream.write(sb1.toString().getBytes());InputStream is = new FileInputStream(file.getValue());byte[] buffer = new byte[1024];int len = 0;while ((len = is.read(buffer)) != -1) {outStream.write(buffer, 0, len);}is.close();outStream.write(LINEND.getBytes());}// 请求结束标志byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINEND).getBytes();outStream.write(end_data);outStream.flush();outStream.close();StringBuilder sb2 = new StringBuilder();BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream(), CHARSET));String inputLine;while ((inputLine = in.readLine()) != null) {sb2.append(inputLine);}in.close();tempStr = sb2.toString();} catch (Exception e) {} finally {if (conn != null) {conn.disconnect();}}return tempStr;} /*** Save Bitmap to a file.保存图片到SD卡。** @param bitmap* @return error message if the saving is failed. null if the saving is* successful.* @throws IOException*/public static void saveBitmapToFile(Bitmap bitmap, String _file)throws IOException {BufferedOutputStream os = null;try {File file = new File(_file);int end = _file.lastIndexOf(File.separator);String _filePath = _file.substring(0, end);File filePath = new File(_filePath);if (!filePath.exists()) {filePath.mkdirs();}file.createNewFile();os = new BufferedOutputStream(new FileOutputStream(file));bitmap.compress(Bitmap.CompressFormat.PNG, 100, os);} finally {if (os != null) {try {os.close();} catch (IOException e) {}}}}}