我编写了一个 Image Browse 类，它允许用户选择图像，但我无法获得图像的任何路径。 onActivityResult 没有给出任何结果。我尝试使用 Log.v 检查但没有成功。
头等舱:
showImg = new ImageView(context);
showImg.setAdjustViewBounds(true);
showImg.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// Select image
BrowsePicture select = new BrowsePicture(context);
Log.v("BrowsePictureSSS", ""+select.filemanagerstring);
Log.v("BrowsePictureSSS", ""+select.selectedImagePath);
Bitmap bMap = BitmapFactory.decodeFile(select.filemanagerstring);
showImg.setImageBitmap(bMap);
}
});
浏览图像类:
package com.FWilson.MyFavoritePlaces;
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.provider.MediaStore;
import android.util.Log;
public class BrowsePicture extends Activity {
private static final int SELECT_PICTURE = 1;
protected String selectedImagePath;
protected String filemanagerstring;
public BrowsePicture(Activity context) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
context.startActivityForResult(Intent.createChooser(intent, "Select Picture"), SELECT_PICTURE);
setResult(0);
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
Uri selectedImageUri = data.getData();
//OI FILE Manager
filemanagerstring = selectedImageUri.getPath();
//MEDIA GALLERY
selectedImagePath = getPath(selectedImageUri);
//DEBUG PURPOSE - you can delete this if you want
if(selectedImagePath!=null)
Log.v("BrowsePic", ""+selectedImagePath);
else System.out.println("selectedImagePath is null");
if(filemanagerstring!=null)
Log.v("BrowsePic", ""+filemanagerstring);
else System.out.println("filemanagerstring is null");
//NOW WE HAVE OUR WANTED STRING
if(selectedImagePath!=null) {
}
else {
}
}
}
}
public String getPath(Uri uri) {
String[] projection = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, projection, null, null, null);
if(cursor!=null)
{
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
else return null;
}
}
最佳答案
您的 BrowsePicture Activity 缺少 onCreate() 方法。如果完全删除构造函数并将它当前拥有的代码放在 onCreate() 中，您可能会得到更好的结果——这适合 Activity 重载。
关于java - onActivityResult 没有给出任何结果，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/6293289/