我一直在尝试从这个应用程序的图库中获取图像,然后在单击按钮时将其上传到我的PHP服务器。
"selectedImagePath" 为什么为空? 如果有人有解决方案,请帮帮我!提前感谢您。
onCreate()
img = (ImageView) findViewById(R.id.ImageView01);
Button browse = (Button) findViewById(R.id.Button01);
browse.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"), SELECT_PICTURE);
}
});
onActivityResult()
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == SELECT_PICTURE) {
selectedImageUri = data.getData();
System.out.println(selectedImageUri);
selectedImagePath = getPath(selectedImageUri);//returns as null
System.out.println("Image Path : " + selectedImagePath);
img.setImageURI(selectedImageUri);
}
}
}
getPath()
public String getPath(Uri uri) {
String[] projection = {MediaStore.Images.Media.DATA};
Cursor cursor = managedQuery(uri, projection, null, null, null);
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
getPath()
方法在哪里?你是否已经在清单文件中添加了写入和读取外部存储
权限? - Piyush