项目中摘出来的一个小功能模块,有需要的朋友可以借鉴下。
效果图:
具体功能:将拍摄的照片保存到SDcard中
具体需求:
1.图片名保存格式:图片名称_手机型号_随机4位数.jpg
2.将图片分解,压缩,显示
3.写入SDCard卡保存
具体实现:
1.定义布局文件
2.编写业务代码
这里只对调用相机拍照、图片显示、保存 做介绍 并提供源码下载
点击按钮后:
@Override public void onClick(View v) { switch (v.getId()) { case R.id.btn_getphoto: mPhotoName = mETphotoName.getEditableText().toString(); mModel = mETmodel.getEditableText().toString(); if(TextUtils.isEmpty(mPhotoName) || TextUtils.isEmpty(mModel)){ Toast.makeText(this,"请输入图片名称和型号",0).show(); return; } final String state = Environment.getExternalStorageState(); if (Environment.MEDIA_MOUNTED.equals(state)) { final Intent takePictureImIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); ContentValues values = new ContentValues(); mPhotoUri = getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values); takePictureImIntent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, mPhotoUri); startActivityForResult(takePictureImIntent,REQUEST_CODE_TAKE_PICTURE); } else { Toast.makeText(this,"请检查内存卡", 0).show(); } break; default: break; } }
onActivityResult回调:
/* (non-Javadoc) * @see android.app.Activity#onActivityResult(int, int, android.content.Intent) */ @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { switch (requestCode) { case REQUEST_CODE_TAKE_PICTURE: // 通过照相获取图片 if (resultCode == Activity.RESULT_OK) { final Uri uri = mPhotoUri; Log.e("MainActivity",uri+""); if (uri != null) { processPicture(uri); } //提示保存图片 AlertDialog.Builder builder = new AlertDialog.Builder(this); builder.setTitle("提示"); builder.setMessage("是否需要保存图片?"); builder.setNegativeButton("取消", null); builder.setPositiveButton("是的", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { String resetPhotoName = mPhotoName+"_"+mModel+"_"+Utils.getRandomString(4); Utils.savePhotoToSDCard(bitmap,Utils.genProjectPath(),resetPhotoName); Toast.makeText(MainActivity.this,"成功--->"+Utils.genProjectPath()+resetPhotoName,0).show(); //清空文本框 mETphotoName.setText(""); mETmodel.setText(""); dialog.cancel(); } }); builder.show(); } break; default: super.onActivityResult(requestCode, resultCode, data); break; } }
图片显示:
/** * 图片显示 * @param uri */ private void processPicture(Uri uri) { final String[] projection = {MediaStore.Images.Media.DATA}; final Cursor cursor = managedQuery(uri, projection, null, null, null); cursor.moveToFirst(); final int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); String imagePath = cursor.getString(columnIndex); Log.e("MainActivity",imagePath); final String targetPath = BitmapUtils.toRegularHashCode(imagePath) + ".jpg"; BitmapUtils.compressBitmap(imagePath, targetPath, 640); //压缩 bitmap = BitmapUtils.decodeBitmap(imagePath, 150); //分解 mImage.setImageBitmap(bitmap); //显示 //上传服务器 //final AvatarUrlUpdateRequest request = new AvatarUrlUpdateRequest(REQUEST_ID_AVATAR_URL_UPDATE,mFileName,targetPath,mLoginResult); //final LoginRequest request = new LoginRequest(0,"[email protected]","123456"); //genericDataManager.retrieveData(request, this); }
源码下载地址:http://download.csdn.net/detail/gao_chun/8128717
时间: 2024-10-16 19:34:43