Android获取SD卡中选中图片的路径(URL)
16lz
2022-08-02
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: [html] view plain copy print ?
- <?xmlversion="1.0"encoding="utf-8"?>
- <LinearLayoutxmlns: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:
[java] view plain copy print ?- packagecom.lostinai;
- importjava.io.IOException;
- importandroid.app.Activity;
- importandroid.content.ContentResolver;
- importandroid.content.Intent;
- importandroid.database.Cursor;
- importandroid.graphics.Bitmap;
- importandroid.net.Uri;
- importandroid.os.Bundle;
- importandroid.provider.MediaStore;
- importandroid.util.Log;
- importandroid.view.View;
- importandroid.widget.Button;
- publicclassQueryPictureUrlActivityextendsActivity{
- privateButtonselect;
- privatefinalStringIMAGE_TYPE="image/*";
- privatefinalintIMAGE_CODE=0;
- publicvoidonCreate(BundlesavedInstanceState){
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- select=(Button)findViewById(R.id.select);
- select.setOnClickListener(newView.OnClickListener(){
- publicvoidonClick(Viewv){
- IntentgetAlbum=newIntent(Intent.ACTION_GET_CONTENT);
- getAlbum.setType(IMAGE_TYPE);
- startActivityForResult(getAlbum,IMAGE_CODE);
- }
- });
- }
- protectedvoidonActivityResult(intrequestCode,intresultCode,Intentdata){
- if(resultCode!=RESULT_OK){//此处的RESULT_OK是系统自定义得一个常量
- //Log.e(TAG,"ActivityResultresultCodeerror");
- return;
- }
- Bitmapbm=null;
- ContentResolverresolver=getContentResolver();
- if(requestCode==IMAGE_CODE){
- try{
- UrioriginalUri=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};
- Cursorcursor=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
- intcolumn_index=cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
- cursor.moveToFirst();
- //最后根据索引值获取图片路径
- Stringpath=cursor.getString(column_index);
- Log.e("Lostinai",path);
- }catch(IOExceptione){
- Log.e("Lostinai",e.toString());
- }
- }
- }
- }
- <uses-permissionandroid:name="android.permission.READ_EXTERNAL_STORAGE"/>
- <uses-permissionandroid:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
- <uses-permissionandroid:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
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