从ImageView中的图片获取文件路径

Question

好吧我正在制作一个Android应用程序,并使用CAPTURE_PIC_REQUEST拍摄照片并将其作为预览存储在屏幕上的imageviewer中.我想知道如何获取Uri和实际路径,因为我计划获取该信息,保存并稍后访问它.所以我无法想象如何从我刚刚拍摄的那张照片中获取Uri或路径名称.这是我正在处理的活动的代码

package com.CS480;

import java.io.File;

import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;

public class AddEx extends Activity {
  static final int CAMERA_PIC_REQUEST = 1337; 
  public void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    setContentView(R.layout.add);

    Button camera = (Button) findViewById(R.id.picButton);
    camera.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(cameraIntent, CAMERA_PIC_REQUEST);               
        }               
    });

}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // TODO Auto-generated method stub
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == CAMERA_PIC_REQUEST) {  
        Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
        ImageView image = (ImageView) findViewById(R.id.returnedPic);  
        image.setImageBitmap(thumbnail);  
    }  
}

}

那么从我在应用程序上取回的图像如何获取文件位置

Answer 1

据我所知,你可以这样做:

private Uri mImageCaptureUri;

public class AddEx extends Activity {
  static final int CAMERA_PIC_REQUEST = 1337; 
  public void onCreate(Bundle savedInstanceState){
    super.onCreate(savedInstanceState);
    setContentView(R.layout.add);

    Button camera = (Button) findViewById(R.id.picButton);
    camera.setOnClickListener(new View.OnClickListener() {

        public void onClick(View v) {
            Intent cameraIntent = 
                    new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            cameraIntent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT,
                    mImageCaptureUri);
            startActivityForResult(cameraIntent, CAMERA_PIC_REQUEST);               
        }               
    });

}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // TODO Auto-generated method stub
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == CAMERA_PIC_REQUEST) {  
        Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
        ImageView image = (ImageView) findViewById(R.id.returnedPic);  
        image.setImageBitmap(thumbnail);  

        String pathToImage = mImageCaptureUri.getPath();

        // pathToImage is a path you need. 

        // If image file is not in there, 
        //  you can save it yourself manually with this code:
        File file = new File(mImageCaptureUri.getPath());
        FileOutputStream fOut = new FileOutputStream(file);
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fOut); // You can choose any format you want
    }  
}    

从关于android.provider.MediaStore.EXTRA_OUTPUT的Android文档:

Intent-extra的名称,用于指示用于存储请求的图像或视频的内容解析器Uri.