如何获取使用相机拍摄的图像的路径？ [英] How to get paths to images captured with camera?

问题描述

我正试图使用​​原生相机应用程序捕获多个图像。如何获取使用意图动作INTENT_ACTION_STILL_IMAGE_CAMERA捕获的图像的路径？



任何帮助将不胜感激。



BCD

解决方案

在启动相机之前获取mediaStore中的图像数量

  public   void  startCameraActivity（）{
 
游标光标= loadCursor（）; 
 
  //   mediaStore中的当前图片 
 image_count_before = cursor。 getCount将（）; 
 
 cursor.close（）; 
 
 Intent cameraIntent =  new  Intent（MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA）; 
 
 List< ResolveInfo> activities = getPackageManager（）。queryIntentActivities（cameraIntent， 0 ）; 
 
  if （activities.size（）>  0 ）
 startActivityForResult（cameraIntent，CAPTURE_IMAGES_FROM_CAMERA）; 
  else  
 Toast.makeText（ this ，getResources（）。getString（R .string.no_camera_app），Toast.LENGTH_SHORT）。show（）; 
} 

onActivityResult调用方法exitingCamera



< pre lang =java> @ Override
public void onActivityResult（ int requestCode， int resultCode，Intent data）{

switch （requestCode）{

case CAPTURE_IMAGES_FROM_CAMERA：

exitingCamera（）;

return ;

}

return ;
}

  public  Cursor loadCursor（）{
 
  final   String  [] columns = {MediaStore.Images.Media.DATA，MediaStore.Images.Media._ID}; 
 
  final   String  orderBy = MediaStore.Images.Media.DATE_ADDED; 
 
  return  getContentResolver（）。query（MediaStore.Images.Media.EXTERNAL_CONTENT_URI，columns，null，null，orderBy）; 
} 

  public   String  [] getImagePaths（光标游标， int  startPosition）{
 
 < span class =code-keyword> int  size = cursor.getCount（） -  startPosition; 
 
  if （size< =  0 ） return  null; 
 
 字符串 [] paths =  new  字符串 [大小]; 
 
  int  dataColumnIndex = cursor.getColumnIndex（MediaStore.Images.Media.DATA）; 
 
  for （ int  i = startPosition; i< cursor.getCount（ ）; i ++）{
 
 cursor.moveToPosition（i）; 
 
 paths [i  -  startPosition] = cursor.getString（dataColumnIndex）; 
} 
 
 返回路径; 
} 

然后可以找到新添加的图片

  private   void  exitingCamera（）{
 
 Cursor cursor = loadCursor（）; 
 
  //  获取新添加图片的路径 
 < span class =code-sdkkeyword> String  [] paths = getImagePaths（cursor，image_count_before）; 
 
  //  过程图片 
进程（路径）; 
 
 cursor.close（）; 
 
} 

你能告诉我什么过程（路径）方法吗？

I'am trying to capture multiple images using a native camera app. How do I get the paths to images captured using intent action "INTENT_ACTION_STILL_IMAGE_CAMERA"?

Any help will be appreciated.

BCD

解决方案

Get the number of images in the mediaStore before starting the camera

public void startCameraActivity(){
    	
	   Cursor cursor = loadCursor();
	   
           //current images in mediaStore
	   image_count_before = cursor.getCount();
	   
	   cursor.close();
	   
    	Intent cameraIntent = new Intent(MediaStore.INTENT_ACTION_STILL_IMAGE_CAMERA);
    	
	    List<ResolveInfo> activities = getPackageManager().queryIntentActivities(cameraIntent, 0);
	       
	    if(activities.size() > 0)
           startActivityForResult(cameraIntent,CAPTURE_IMAGES_FROM_CAMERA);
	    else
	    	Toast.makeText(this, getResources().getString(R.string.no_camera_app), Toast.LENGTH_SHORT).show();
    }

In onActivityResult call method exitingCamera

@Override
 public void onActivityResult(int requestCode, int resultCode, Intent data){
       	
    	  switch(requestCode){
    	       	
    	  case CAPTURE_IMAGES_FROM_CAMERA:
    	       		
    	      exitingCamera();
    	       		
    	      return;
    	       	
    	  }
    
       	 return;
       }

public Cursor loadCursor(){
	
    final String[] columns = { MediaStore.Images.Media.DATA, MediaStore.Images.Media._ID };
	
	final String orderBy = MediaStore.Images.Media.DATE_ADDED;
	
	return getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns,null,null,orderBy);
}

public String[] getImagePaths(Cursor cursor, int startPosition){
	
	int size = cursor.getCount() - startPosition;
	
	if(size <= 0) return null;
	
	String []paths = new String[size];
	
	int dataColumnIndex = cursor.getColumnIndex(MediaStore.Images.Media.DATA);
	  
     for (int i = startPosition; i < cursor.getCount(); i++) {
 	  
 	     cursor.moveToPosition(i);
 	
 	     paths[i - startPosition]= cursor.getString(dataColumnIndex);
     }
       
     return paths;
}

Then the newly added images can be found with

private void exitingCamera(){
   		
   		Cursor cursor = loadCursor();
   		
                //get the paths to newly added images
   		String []paths = getImagePaths(cursor,image_count_before);
   		
                // process images		
   		process(paths);
   		
   		cursor.close();
   		
   	}

Could you tell me please what process(paths) method does?

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