Android(安卓)调用系统相机并加时间水印

调用系统相机：

/*** * 启动拍照 */private void capture(){Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);       // 获取文件        File  file=new File(tempPicPath);        //拍照后原图回存入此路径下        intent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(file));        startActivityForResult(intent, 1);  }

private String tempPicPath = "/mnt/sdcard/temp.jpg" ;

拍照完成之后的图片保存在sdcard中的temp.jpg,这个图片是没有水印的。

拍照回调时将图片生成bitmap，可以使用bitmap来添加水印：

@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {super.onActivityResult(requestCode, resultCode, data);//调用拍照之后返回的信息        if (resultCode == Activity.RESULT_OK) {         //        Toast.makeText(this, "拍照成功", Toast.LENGTH_LONG).show();         bm = BitmapFactory.decodeFile(tempPicPath) ;

        createDialog() ;        }else{//        Toast.makeText(this, "拍照不成功", Toast.LENGTH_LONG).show();         }}

其中：

//弹出对话框，是否保存图片private void createDialog(){Builder builder = new Builder(this) ;builder.setTitle("请输入图片名称") ;View view = LayoutInflater.from(this).inflate(R.layout.dialog_save_pic, null) ;editFileName = (EditText) view.findViewById(R.id.editText_pic_name) ;btnSave = (Button) view.findViewById(R.id.button_save) ;btnCancel = (Button) view.findViewById(R.id.button_cancel) ;builder.setView(view) ;btnSave.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {String name = editFileName.getText().toString().trim() ;if(name != null && name.length() > 0){//保存图片savePic(name) ;Toast.makeText(getApplicationContext(), "保存成功", 0).show() ;dialog.dismiss() ;}else{Toast.makeText(getApplicationContext(), "请输入图片名称后，再保存", 0).show() ;}}}) ;

/** * 保存图片 * @param name */private void savePic(String name){File rootFile = new File(MConstent.unuploadPicDir) ;if(!rootFile.exists()){rootFile.mkdirs() ;}File file = new File(MConstent.unuploadPicDir + "/" + name + ".jpg") ;try {FileOutputStream fos = new FileOutputStream(file) ;//FileInputStream fis = new FileInputStream(new File(tempPicPath)) ;byte[] temp = new byte[1024] ;//添加时间水印Bitmap newbm = addTimeFlag(bm) ;newbm.compress(Bitmap.CompressFormat.JPEG, 100, fos);// 把数据写入文件 fos.flush() ;fos.close() ;} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}/** * 添加时间水印 * @param bm */private Bitmap addTimeFlag(Bitmap src){ // 获取原始图片与水印图片的宽与高          int w = src.getWidth();          int h = src.getHeight();          Bitmap newBitmap = Bitmap.createBitmap(w, h, Config.ARGB_8888);          Canvas mCanvas = new Canvas(newBitmap);          // 往位图中开始画入src原始图片          mCanvas.drawBitmap(src, 0, 0, null);         //添加文字        Paint textPaint = new Paint();          SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");          String time = sdf.format(new Date(System.currentTimeMillis()));          textPaint.setColor(Color.RED) ;        textPaint.setTextSize(100);         String familyName = "宋体";  //        Typeface typeface = Typeface.create(familyName,  //                Typeface.BOLD_ITALIC);  //        textPaint.setTypeface(typeface);  //        textPaint.setTextAlign(Align.CENTER);                  mCanvas.drawText(time, (float)(w*1)/7, (float)(h*14)/15, textPaint);         mCanvas.save(Canvas.ALL_SAVE_FLAG);          mCanvas.restore();          return newBitmap ;}

更多相关文章

随机推荐