Android上传头像，图片剪裁，压缩图片

Android上传头像，图片剪裁，压缩图片       
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android2012-12-05 12:051036人阅读评论(3)收藏举报
androidAndroid

压缩图片搞的我唠嗑疼，有的从网上找的压根不能用。。。

下面看看我整理的吧：

点击头像的时候开始调用camera()方法

private byte[] mContent = new byte[1024];// 保存照片转换后的字节，用与上传到服务器

private Bitmap myBitmap;

private static final int REQUEST_CAMERA = 1;

private static final int REQUEST_CALENDAR = 2;

public void camera() {

  final CharSequence[] items = { "相册", "拍照" };

  AlertDialog dlg = new AlertDialog.Builder(PersonDataActivity.this)

    .setTitle("选择图片")

    .setItems(items, new DialogInterface.OnClickListener() {

     public void onClick(DialogInterface dialog, int item) {

      // 这里item是根据选择的方式，

      // 在items数组里面定义了两种方式，拍照的下标为1所以就调用拍照方法

      if (item == 1) {

       Intent getImageByCamera = new Intent(

         "android.media.action.IMAGE_CAPTURE");

       startActivityForResult(getImageByCamera,

         REQUEST_CAMERA);

      } else {

       Intent getImage = new Intent(

         Intent.ACTION_GET_CONTENT);

       getImage.addCategory(Intent.CATEGORY_OPENABLE);

       getImage.setType("image/jpeg");

       startActivityForResult(getImage, 0);

      }

     }

    }).create();

  dlg.show();

}

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

  super.onActivityResult(requestCode, resultCode, data);

  ContentResolver resolver = getContentResolver();

  if (requestCode == 0) {

   try {

    Uri originalUri = data.getData();

    startPhotoZoom(originalUri);// 图片剪裁

    Bitmap bm = yasuo(originalUri);

    // Bitmap bm = (Bitmap) data.getExtras().get("data");

    // Bitmap bb = ThumbnailUtils.extractThumbnail(bm, 420, 320);

    Uri uri = Uri.parse(MediaStore.Images.Media.insertImage(

      getContentResolver(), bm, null, null));

    mContent = CameraUtils.readStream(resolver.openInputStream(Uri

      .parse(uri.toString())));

    // 将字节数组转换为ImageView可调用的Bitmap对象

    // myBitmap = CameraUtils.getPicFromBytes(mContent, null);

    // //把得到的图片绑定在控件上显示

    // img_touxiang.setImageBitmap(myBitmap);

    // 处理圆角

    // Bitmap icon = CameraUtils.toRoundCorner(myBitmap);

    // img_touxiang.setImageBitmap(icon);

   } catch (Exception e) {

    // TODO: handle exception

    e.printStackTrace();

   }

  } else if (requestCode == REQUEST_CAMERA) {

   try {

    super.onActivityResult(requestCode, resultCode, data);

    Bundle extras = data.getExtras();

    myBitmap = (Bitmap) extras.get("data");

    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    myBitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);

    mContent = baos.toByteArray();

   } catch (Exception e) {

    // TODO: handle exception

    e.printStackTrace();

   }

   // iv_icon.setImageBitmap(Utils.toRoundCorner(myBitmap, 10));//

   // 把拍摄的照片转成圆角显示在预览控件上

   // Bitmap icon = Utils.toRoundCorner(myBitmap, 65);

   // img_touxiang.setImageBitmap(myBitmap);

  } else if (requestCode == REQUEST_CALENDAR) {

   if (requestCode == RESULT_OK) {

   }

  }

  if (data != null) {

   getImageToView(data);

  }

  // 上传到数据库，并修改页面图像

  HashMap<String, Object> map = service.updateAvatar(uid, mContent,

    "android", String.valueOf(1020));

  if (map != null && !"".equals(map.get("newAvatar").toString())) {

   // 处理返回的新头像地址

   // 重新保存图片

   spf = getSharedPreferences("data", 0);

   Editor e = spf.edit();

   e.putString("avatar", map.get("newAvatar").toString());

   e.commit();

  } else {

   Utils.showToast(PersonDataActivity.this, "上传头像失败");

  }

}

/**

  * 裁剪图片方法实现

  *

  * @param uri

  */

public void startPhotoZoom(Uri uri) {

  Intent intent = new Intent("com.android.camera.action.CROP");

  intent.setDataAndType(uri, "image/*");

  // 设置裁剪

  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", 320);

  intent.putExtra("outputY", 320);

  intent.putExtra("return-data", true);

  startActivityForResult(intent, 2);

}

/**

  * 保存裁剪之后的图片数据

  *

  * @param picdata

  */

private void getImageToView(Intent data) {

  Bundle extras = data.getExtras();

  if (extras != null) {

   Bitmap photo = extras.getParcelable("data");

   Drawable drawable = new BitmapDrawable(photo);

   img_touxiang.setImageDrawable(drawable);

  }

}

/**

*压缩图片

*

private Bitmap yasuo(Uri uri) {

  Bitmap bitmap = null;

  try {

   BitmapFactory.Options options = new BitmapFactory.Options();

   options.inJustDecodeBounds = true;

   bitmap = BitmapFactory.decodeStream(this.getContentResolver()

     .openInputStream(uri), null, options);

   int picWidth = options.outWidth;

   int picHeight = options.outHeight;

   WindowManager windowManager = getWindowManager();

   Display display = windowManager.getDefaultDisplay();

   int screenWidth = display.getWidth();

   int screenHeight = display.getHeight();

   options.inSampleSize = 1;

   if (picWidth > picHeight) {

    if (picWidth > screenWidth)

     options.inSampleSize = picWidth / screenWidth;

   } else {

    if (picHeight > screenHeight)

     options.inSampleSize = picHeight / screenHeight;

   }

   options.inJustDecodeBounds = false;

   bitmap = BitmapFactory.decodeStream(this.getContentResolver()

     .openInputStream(uri), null, options);

   img_touxiang.setImageBitmap(bitmap);

   /*

    * if (bitmap.isRecycled() == false) { bitmap.recycle(); }

    */

   System.gc();

  } catch (Exception e1) {

  }

  return bitmap;

}