Android获取SD卡中选中图片的路径（URL）

最近在做一个图片上传的功能，需要提供上传图片在SD卡中的路径，在网上看了些例子，改改调试成功，代码很简单。其布局文件如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
    <Button
        android:id="@+id/select"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="请选择SD卡中的图片"
        />
</LinearLayout>

ＪＡＶＡ文件如下：

 

package com.lostinai;

import java.io.IOException;
import android.app.Activity;
import android.content.ContentResolver;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
import android.view.View;
import android.widget.Button;

public class QueryPictureUrlActivity extends Activity {
    private Button select;
    private final String IMAGE_TYPE = "image/*";
    private final int IMAGE_CODE = 0;
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        select = (Button)findViewById(R.id.select);
        select.setOnClickListener(new View.OnClickListener(){
            public void onClick(View v) {
                Intent getAlbum = new Intent(Intent.ACTION_GET_CONTENT);
                getAlbum.setType(IMAGE_TYPE);
                startActivityForResult(getAlbum, IMAGE_CODE);
            }
        });
    }
    protected void onActivityResult(int requestCode, int resultCode, Intent data){
        if (resultCode != RESULT_OK) {        //此处的 RESULT_OK 是系统自定义得一个常量
//            Log.e(TAG,"ActivityResult resultCode error");
            return;
        }
        Bitmap bm = null;
        ContentResolver resolver = getContentResolver();
        if (requestCode == IMAGE_CODE) {
            try {
                Uri originalUri = data.getData();        //获得图片的uri
                bm = MediaStore.Images.Media.getBitmap(resolver, originalUri);        //显得到bitmap图片
//    这里开始的第二部分，获取图片的路径：
                String[] proj = {MediaStore.Images.Media.DATA};
                Cursor cursor = managedQuery(originalUri, proj, null, null, null);
                //按我个人理解 这个是获得用户选择的图片的索引值
                int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
                cursor.moveToFirst();
                //最后根据索引值获取图片路径
                String path = cursor.getString(column_index);
                Log.e("Lostinai",path);

            }catch (IOException e) {

                Log.e("Lostinai",e.toString());

            }

        }
    }
}

最后别忘记了加上权限啊

 

 

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />