android 打开本地相册，并将选择的照片显示到当前界面

快来打我* 2022-09-24 12:30 172阅读 0赞

import android.app.Activity;  
import android.content.Intent;  
import android.database.Cursor;  
import android.graphics.BitmapFactory;  
import android.net.Uri;  
import android.os.Bundle;  
import android.provider.MediaStore;  
import android.view.View;  
import android.widget.Button;  
import android.widget.ImageView;  
  
public class ImageGalleryDemoActivity extends Activity \{  
  
private static int RESULT\_LOAD\_IMAGE = 1;  
  
@Override  
public void onCreate(Bundle savedInstanceState) \{  
super.onCreate(savedInstanceState);  
setContentView(R.layout.main);  
  
Button buttonLoadImage = (Button) findViewById(R.id.buttonLoadPicture);  
buttonLoadImage.setOnClickListener(new View.OnClickListener() \{  
  
@Override  
public void onClick(View arg0) \{

//打开本地相册  
Intent i = new Intent(  
Intent.ACTION\_PICK,  
android.provider.MediaStore.Images.Media.EXTERNAL\_CONTENT\_URI);  
//设定结果返回  
startActivityForResult(i, RESULT\_LOAD\_IMAGE);  
\}  
\});  
\}  
  
@Override  
protected void onActivityResult(int requestCode, int resultCode, Intent data) \{  
super.onActivityResult(requestCode, resultCode, data);  
  
if (requestCode == RESULT\_LOAD\_IMAGE && resultCode == RESULT\_OK && null != data) \{

//获取返回的数据，这里是android自定义的Uri地址  
Uri selectedImage = data.getData();  
String\[\] filePathColumn = \{ MediaStore.Images.Media.DATA \};  
//获取选择照片的数据视图  
Cursor cursor = getContentResolver().query(selectedImage,  
filePathColumn, null, null, null);  
cursor.moveToFirst();  
//从数据视图中获取已选择图片的路径  
int columnIndex = cursor.getColumnIndex(filePathColumn\[0\]);  
String picturePath = cursor.getString(columnIndex);  
cursor.close();  
//将图片显示到界面上  
ImageView imageView = (ImageView) findViewById(R.id.imgView);  
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));  
  
\}  
  
\}  
\}

最后注意Manifest中的权限设定：

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