1

我想制作一个应用程序，当我按下某个按钮时，我想打开摄像头然后捕捉图像，然后捕捉它。

我想在一个新的活动中打开这个图像，把这个图像放在这个新的活动中，除了两个按钮，一个是删除它，另一个是保存在平板电脑的某个目录中。

我使用代码打开凸轮：

    Open_CAM.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v)  {

            Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); 
           startActivityForResult(cameraIntent, CAMERA_REQUEST);

我不知道在那之后我能做什么？

任何帮助请...

4

2 回答 2

5 
Open_CAM.setOnClickListener(new View.OnClickListener() {
    public void onClick(View v)  {
                Intent photoPickerIntent= new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                photoPickerIntent.putExtra(MediaStore.EXTRA_OUTPUT, getTempFile());
                photoPickerIntent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
                photoPickerIntent.putExtra("return-data", true);
                startActivityForResult(photoPickerIntent,TAKE_PICTURE);}}

 private Uri getTempFile() 
 {
      File root = new File(Environment.getExternalStorageDirectory(), "ServiceMySigns");
      if (!root.exists()) 
      {
          root.mkdirs();
      }
     final Calendar c = Calendar.getInstance();
     int y = c.get(Calendar.YEAR);
     int m = c.get(Calendar.MONTH);
     int d = c.get(Calendar.DAY_OF_MONTH);

     int h = c.get(Calendar.HOUR_OF_DAY);
     int mi = c.get(Calendar.MINUTE);

      //String filename=""+y+"-"+"-"+(m+1)+"-"+d+" "+h+":"+mi;
      String filename=""+System.currentTimeMillis();
      File file = new File(root,filename+".jpeg" );
      muri = Uri.fromFile(file);
      selectedImagePath=muri.getPath();
      Log.v("take picture path",selectedImagePath);
      return muri;
  }

  public void onActivityResult(int requestcode,int resultcode ,Intent data)
  {
      switch(requestcode)
      { 
      case TAKE_PICTURE: 
          if(resultcode==RESULT_OK)
          { 
              BitmapFactory.Options o = new BitmapFactory.Options();
              o.inSampleSize=8;
              Bitmap newImage = Bitmap.createScaledBitmap(BitmapFactory.decodeFile(selectedImagePath,o), 
                                                         150, 
                                                         150, 
                                                         false);}}}

在 onActivityResult 中获得位图后，您可以通过意图将该位图发送到另一个活动。

于 2012-09-18T10:22:12.513 回答
2

下面的代码将帮助您从相机拍照并将图像设置到下一个活动

private void takePicture() {
     cameraIntent = new Intent(
     android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
     startActivityForResult(cameraIntent, IMAGE_CAPTURE);
}

// Receive the result from the start Activity
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        Log.e("onActivityResult", "we r in onActivityResult");

        if (resultCode == Activity.RESULT_OK) {
            switch (requestCode) {

            case IMAGE_CAPTURE:

                File dir = Environment .getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM);
                File output = new File(dir, "camerascript.png");
                cPath = output.getAbsolutePath();
                cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT,
                        Uri.fromFile(output));
                Intent capIntent = new Intent(yourcurrentActivity.this,
                        yournextActivity.class);
                capIntent.putExtra("gallery", cPath);
                startActivity(capIntent);
                break;
            default:
                break;
            }
        }
    }

之后，将 intnet 额外数据放入yournextAactivity您想要设置捕获图像的位置。

        ImageView imageView = (ImageView)findViewById(R.id.imgView);
    String fileString = getIntent().getStringExtra("gallery");
    imageView.setImageBitmap(BitmapFactory.decodeFile(fileString));
于 2012-09-18T10:54:25.380 回答