我遇到了一个问题，涉及从移动设备中挑选文本文件并在TextView中显示其位置。我想从我的手机中选择一个文本文件。选择文件后我想在适配器中显示其位置和名称。但是我无法在适配器内执行此任务。
这是适配器的getView方法
public View getView(int position, View convertView, final ViewGroup parent) {
if (inflater == null)
inflater = (LayoutInflater) context
.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
if (convertView == null)
convertView = inflater.inflate(R.layout.feed_item_professional_tab_timeline, parent, false);
if (imageLoader == null)
imageLoader = AppController.getInstance().getImageLoader();
//Getting the views
TextView companyName = (TextView) convertView.findViewById(R.id.txtCompanyName);
TextView jobCategory = (TextView) convertView.findViewById(R.id.txtJobCategory);
TextView timeStamp = (TextView) convertView.findViewById(R.id.timeStampPost);
TextView postName = (TextView) convertView.findViewById(R.id.postName);
TextView jobLocation = (TextView) convertView.findViewById(R.id.jobLocation);
TextView noOfPositions = (TextView) convertView.findViewById(R.id.noOfPositions);
TextView jobDescriptions = (TextView) convertView.findViewById(R.id.jobDescription);
Button apply = (Button) convertView.findViewById(R.id.btnApply);
Button share = (Button) convertView.findViewById(R.id.btnShare);
// On clicking apply button
apply.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// A dialog will be opened that will cllow the user to apply for the job
AlertDialog.Builder alertDialogBuilder;
AlertDialog alertDialog;
Toast.makeText(v.getContext(), "clicked", Toast.LENGTH_SHORT).show();
// alertDialogBuilder = new AlertDialog.Builder(v.getContext()); // we are using v.getContext here because View v is a part of Fragment that is shown through BaseAdapter inside Fragment
alertDialogBuilder = new AlertDialog.Builder(context);
alertDialogBuilder.setTitle("Apply for JOB");
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// LayoutInflater inflater = (LayoutInflater) v.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.custom_dialog_apply_job, parent, false);
alertDialogBuilder.setView(view);
alertDialog = alertDialogBuilder.create();
alertDialog.show();
// Getting Resume Button
Button resumeBtn = (Button) view.findViewById(R.id.btnResume);
resumeBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(context, "clicked", Toast.LENGTH_SHORT).show();
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("file/*");
((Activity) context).startActivityForResult(intent, PICKFILE_RESULT_CODE);
}
});
}
});
FeedItemProfessionalTimeline item = listProfessionalTimeline.get(position);
//Getting values from List
String companyNam = item.getCompanyName();
String jobCat = item.getJobCategory();
Log.e("job category", jobCat);
String date_time = item.getDate_time();
String jobTitle = item.getJobTitle();
//To make job title underline
String htmlJobTitle = "<u>" + jobTitle + "</u>";
String jobLocatn = item.getJobLocation();
String positions = item.getPositions();
String positionsOpen = "Positions open : " + positions;
String jobInfo = item.getJobInfo();
//Setting values to the views
String postedJob = companyName + " posted a job under " + jobCategory + " category ";
Log.e("posted job", postedJob);
companyName.setText(companyNam); // Setting Company name
jobCategory.setText(jobCat); // Setting job category
timeStamp.setText(date_time);//Setting timestamp
postName.setText(Html.fromHtml(htmlJobTitle)); //Setting post name
jobLocation.setText(jobLocatn); // Setting job location
noOfPositions.setText(positionsOpen);//Setting number of positions
jobDescriptions.setText(jobInfo);
return convertView;
}
片段中的onActivityResult方法：
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1) {
String filepath = data.getDataString();
Toast.makeText(getActivity(), "Hello onActivityResult", Toast.LENGTH_SHORT).show();
}
}
所以我在自定义适配器和onActivityResult方法insode片段中使用了startActivityForResult，因为适配器正在填充片段内的列表视图。但Toast在这里不起作用。请帮助。