Question

我使用了以下链接中的代码，非常有帮助，谢谢： http://www.tutorialforandroid.com/2010/10/take-picture-in-android-with.html

需要一些照片问题的帮助！ takePhoto（）启动MediaStore.ACTION_IMAGE_CAPTURE，getFile（）创建“Image keeper”目录，然后将拍摄的照片保存在“Image-SOMENUMBER.jpg”名称下！在onActivityResult（）中我想将拍摄的照片显示为ImageView和i'd喜欢在edittext或其他东西中将图片重命名为用户输入的内容！

有两个问题：

1）为什么我不能让ImageView在try {}部分显示我的图片？我究竟做错了什么？我怎样才能获得保存图像的路径？

2）有没有一种方法可以让用户按照他们想要的方式命名照片？（例如“另存为”或点击某些按钮点击等。）

欢迎任何想法！谢谢！

这是代码：

private static final int TAKE_PHOTO_CODE = 1;  

private void takePhoto(){  
  final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);  
  intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(getFile(this)) );   
  startActivityForResult(intent, TAKE_PHOTO_CODE);  
}  

private File getFile(Context context){  

  final File path = new File( Environment.getExternalStorageDirectory(), "Image keeper" );  
  if(!path.exists()){  
    path.mkdir(); 
  }
  String name;
  int n = 100000;
  int rand;
  rand = new Random().nextInt(n);
  name = "Image-" + rand + ".jpg";
  File file = new File(path,name);

  return file;  
}  

@Override  
protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
  if (resultCode == RESULT_OK) {
      switch(requestCode){  
      case TAKE_PHOTO_CODE:  
        final File file = getFile(this);
        try {  
          Bitmap captureBmp;
          captureBmp = Media.getBitmap(getContentResolver(), Uri.fromFile(file) );  

          iv = (ImageView) findViewById(R.id.imageView1);
          iv.setImageBitmap(captureBmp);

        } catch (FileNotFoundException e) {  
          e.printStackTrace();  
        } catch (IOException e) {  
          e.printStackTrace();  
        }  
      break;  
    }  
  }  
}

Answer 1

无法解决重命名问题的一部分，但这段代码为我做了一份工作！我敢肯定它可以做得有点发达但它的确有效！它涉及拍照，保存到SD卡并获得它的路径！

ImageView iv;
static File image;
Uri ImageUri;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

   Button btn = (Button) findViewById(R.id.button1);

   btn.setOnClickListener(new OnClickListener() {

    @Override
    public void onClick(View v) {

        takePhoto();

    }
});
}

private static final int TAKE_PHOTO_CODE = 1;  

private void takePhoto(){
  image = getFile(this);
  final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);  
  intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(image) );   
  startActivityForResult(intent, TAKE_PHOTO_CODE);  
}  

private File getFile(Context context){  

  final File path = new File( Environment.getExternalStorageDirectory(), "Image keeper" );  
  if(!path.exists()){  
    path.mkdir(); 
  }
  String name;
  int n = 100000;
  int rand;
  rand = new Random().nextInt(n);
  name = "Image-" + rand + ".jpg";
  File fileimage = new File(path, name);

  return fileimage;  
}  

@Override  
protected void onActivityResult(int requestCode, int resultCode, Intent data) {  
  if (resultCode == RESULT_OK) {
      switch(requestCode){  
      case TAKE_PHOTO_CODE:  

        try {  
          Bitmap captureBmp;
          captureBmp = Media.getBitmap(getContentResolver(), Uri.fromFile(image) );

          ImageUri = Uri.fromFile(image);
          String pathToImage = ImageUri.getPath();

          iv = (ImageView) findViewById(R.id.imageView1);
          iv.setImageBitmap(captureBmp);

        } catch (FileNotFoundException e) {  
          e.printStackTrace();  
        } catch (IOException e) {  
          e.printStackTrace();  
        } 
        iv.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
        iv.setAdjustViewBounds(true);

      break;  
    }  
  }  
}

在Android中的SD卡上保存/重命名拍摄的照片

1 个答案: