Develop Reference

listview is not clickable after adding custom adapter android

i want get image from the listview .But problem is that whatever the list view i created that is not clickable. i tried with onItemclick listener also, but its not working because of listview is not clickable . Its seems that listview is not at all clickable ..Below is given adapter for for listview.
// The adapter of the GridView which contains the details of the detected faces.
private class FaceListAdapter extends BaseAdapter {
//List<FaceRectangle> ffRect;
// The detected faces.
List<Face> faces;
List<UUID> faceIdList;
List<IdentifyResult> mIdentifyResults;
// The thumbnails of detected faces.
List<Bitmap> faceThumbnails;
// Initialize with detection result.
FaceListAdapter(Face[] detectionResult) {
//ffRect=new ArrayList<>();
faceIdList = new ArrayList<>();
faces = new ArrayList<>();
faceThumbnails = new ArrayList<>();
mIdentifyResults = new ArrayList<>();
if (detectionResult != null) {
faces = Arrays.asList(detectionResult);
for (Face face: faces) {
try {
// Crop face thumbnail with five main landmarks drawn from original image.
faceThumbnails.add(ImageHelper.generateFaceThumbnail(mBitmap, face.faceRectangle));
faceRect=face.faceRectangle;
//ffRect.add(faceRect);
faceIdList.add(null);
} catch (IOException e) {
// Show the exception when generating face thumbnail fails.
//setInfo(e.getMessage());
}
}
}
}
public void setIdentificationResult(IdentifyResult[] identifyResults) {
mIdentifyResults = Arrays.asList(identifyResults);
}
#Override
public boolean isEnabled(int position) {
return false;
}
#Override
public int getCount() {
return faces.size();
}
#Override
public Object getItem(int position) {
return faces.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater layoutInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(R.layout.item_face_with_description, parent, false);
}
convertView.setId(position);
// Show the face thumbnail.
((ImageView)convertView.findViewById(R.id.face_thumbnail)).setImageBitmap(faceThumbnails.get(position));
if (mIdentifyResults.size() == faces.size()) {
// Show the face details.
DecimalFormat formatter = new DecimalFormat("#0.00");
if (mIdentifyResults.get(position).candidates.size() > 0) {
String personId = mIdentifyResults.get(position).candidates.get(0).personId.toString();
String personName = StorageHelper.getPersonName(personId, "person", Face_detection.this);
String identity = "Person: " + personName + "\n" + "Confidence: " + formatter.format(mIdentifyResults.get(position).candidates.get(0).confidence);
((TextView) convertView.findViewById(R.id.text_detected_face)).setText(identity);
photoAdd.setEnabled(false);
} else {
((TextView) convertView.findViewById(R.id.text_detected_face)).setText(
R.string.face_cannot_be_identified);
photoAdd.setEnabled(true);
// btmp.add(faceThumbnails.get(position));
//fRect.add(ffRect.get(position));
}
}
return convertView;
}
}
> item_face_with_description.xml
<!-- Copyright (c) Microsoft. All rights reserved. -->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/face_thumbnail"
android:layout_width="80dp"
android:layout_height="80dp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="5dp"
android:layout_marginStart="5dp"
android:id="#+id/text_detected_face" />
</LinearLayout>
Xml that contains ListView
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_face_detection"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="myapptest.techm.com.myapptest.Face_detection">
<include
android:id="#+id/tool_bar"
layout="#layout/tacho_toolbar"></include>
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="#+id/tool_bar">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:text="Take Again"
android:layout_height="wrap_content"
android:layout_marginTop="22dp"
android:id="#+id/takePhoto"
android:layout_below="#+id/camerapreview"
android:layout_centerHorizontal="true"
android:layout_width="150dp"
android:onClick="clickPhoto (Face_detection)"
android:visibility="gone" />
<TextView
android:text="Faces in Image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/textView23"
android:textAppearance="#style/TextAppearance.AppCompat.Medium"
android:layout_below="#+id/takePhoto"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="42dp" />
<ListView
android:layout_width="match_parent"
android:layout_height="400dp"
android:layout_below="#+id/textView23"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="28dp"
android:id="#+id/face_detect_list"
android:focusable="false" />
<Button
android:text="Add"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="25dp"
android:layout_marginStart="25dp"
android:layout_marginBottom="103dp"
android:id="#+id/photoAdd" />
<Button
android:text="Cancle"
android:layout_width="150dp"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/photoAdd"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"
android:layout_marginRight="66dp"
android:layout_marginEnd="66dp"
android:id="#+id/cancle" />
<SurfaceView
android:id="#+id/camerapreview"
android:layout_width="350dp"
android:layout_height="400dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp" />
<Button
android:text="Identify"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignTop="#+id/cancle"
android:layout_alignRight="#+id/takePhoto"
android:layout_alignEnd="#+id/takePhoto"
android:layout_marginRight="18dp"
android:layout_marginEnd="18dp"
android:id="#+id/identify"
android:visibility="gone" />
</RelativeLayout>
</LinearLayout>
</RelativeLayout>

The isEnabled method on your adapter is responsible for your ListView ignoring clicks.
#Override
public boolean isEnabled(int position)
{
return false;
}
Your adapter overrides isEnabled and returns false for all positions, indicating that every item in the list is disabled. Disabled views do not receive input events.
If its possible to disable items in your list then your custom adapter needs to track these items somehow (e.g. a list), otherwise you should be returning true for all positions.

android - TextView doesn't displayed in RecyclerView

I've got an app which got some data (titles of youtube videos) and displayed them in the TextViews which in the items in RecyclerView. But some of TextViews are not displayed, but data is loaded correctly.
On my phone don't displayed only few elements of list, on my old tabled - almost all elements are not displayed.
I do some experiments and learned that strings longer then some value are not displayed.
List item
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_margin="1dp"
android:descendantFocusability="blocksDescendants"
android:orientation="vertical"
android:padding="3dp"
android:background="#color/colorAccent">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/galley_photo_item_image"
android:layout_width="120dp"
android:layout_height="120dp"/>
<CheckBox
android:id="#+id/galley_photo_item_checkbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:buttonTint="#color/colorPrimary"
android:visibility="invisible"/>
</FrameLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="WTF"
android:minLines="3"
android:maxLines="3"
android:background="#color/colorPrimary"
android:id="#+id/image_name_text"/>
</LinearLayout>
My Adapter
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int i)
{
View convertView = inflater.inflate(R.layout.gallery_photo_item,parent,false);
ViewHolder view_holder = new ViewHolder(convertView);
//view_holder.Position = i;
//Event handling
view_holder.CheckBox.setOnClickListener(this);
view_holder.View.setOnClickListener(this);
convertView.setTag(view_holder);
//checkBox.setTag(position);
return view_holder;
}
#Override
public void onBindViewHolder(ViewHolder view_holder, int position)
{
//Toggle checkbox on DELETE MODE
if(is_checking) {
view_holder.CheckBox.setVisibility(View.VISIBLE);
view_holder.CheckBox.setChecked(checked[position]);
}
else
view_holder.CheckBox.setVisibility(View.INVISIBLE);
//view.setTag(position);
view_holder.CheckBox.setTag(position);
view_holder.Position=position;
//Display image
//String uri = Uri.fromFile(thumbs[position]).toString();
String uri = thumbs_fnames[position];
Glide.with(context)
.load(uri)
.centerCrop()
.into(view_holder.ImageView);
//Добавляем подписи (если есть)
if((thumbs_descriptions!=null))//&&(thumbs_descriptions.length==thumbs_fnames.length))
{
String text = thumbs_descriptions[position];
Log.d("ImageListAdapter",position +": "+text+"|");
view_holder.Description.setText(text);
}
else
Log.d("ImageListAdapter",position + ": nothing");
if(position== markred_id)
view_holder.View.setBackgroundResource(R.color.colorPrimary);
else
view_holder.View.setBackgroundResource(R.color.transparent);
}
And the last strange thing. When I set the text manually:
text = "Some long-long text bla-bla-bla ... ... ... ...;
it works correctly.
What the strange problem?

I did it. The problew was that FrameLayout has width and height mathc_parent instend wrap_content.
Correct XML
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_margin="1dp"
android:descendantFocusability="blocksDescendants"
android:orientation="vertical"
android:padding="3dp">
<FrameLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/galley_photo_item_image"
android:layout_width="120dp"
android:layout_height="120dp"/>
<CheckBox
android:id="#+id/galley_photo_item_checkbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:buttonTint="#color/colorPrimary"
android:visibility="invisible"/>
</FrameLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:minLines="3"
android:maxLines="3"
android:id="#+id/image_name_text"/>
Diff: https://www.diffchecker.com/qe8pcozv
You can also see difference in TextView height, but it doesn't metter, It works in both situations.

retrieving an image from parse database

I have my information posted already on parse database but i want to retrieve it using recircularView.
can anyone please guide me or direct me on how should i do it?
here is my code of the xml that holds the layout of the recircularView
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="#dimen/size_byte"
android:layout_marginLeft="#dimen/size_word"
android:layout_marginRight="#dimen/size_word"
android:layout_marginTop="#dimen/size_byte">
<ImageView
android:id="#+id/adPic"
android:layout_width="#dimen/movie_thumbnail_width"
android:layout_height="#dimen/movie_thumbnail_height"
android:layout_centerVertical="true"
android:src="#mipmap/ic_launcher" />
<TextView
android:id="#+id/adTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignTop="#+id/adPic"
android:layout_marginLeft="56dp"
android:alpha="0.87"
android:gravity="right"
android:padding="#dimen/size_half_byte"
android:text="Hitman Agent 47"
android:textSize="#dimen/size_text_primary" />
<TextView
android:id="#+id/adPrice"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="#id/adTitle"
android:alpha="0.87"
android:padding="#dimen/size_half_byte"
android:text="5.00$"
android:textSize="#dimen/size_text_secondary" />
<TextView
android:id="#+id/adDate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_below="#id/adPrice"
android:alpha="0.87"
android:padding="#dimen/size_half_byte"
android:text="31-31-31"
android:textSize="#dimen/size_text_secondary" />
</RelativeLayout>

You can get the image url from ParseObject using getUrl() method of ParseFile
Suppose you get a list of ParseObjects like this
List<MyObject> myObjects = nee ArrayList();
List<ParseObject> objects
for (ParseObject objectItem: objects) {
String fileName = "";
String fileURL = "";
if (objectItem.getParseFile("imageColumn") != null) {
try {
ParseFile parseFile = (ParseFile) objectItem
.getParseFile("imageColumn");
fileURL = parseFile.getUrl();
fileName = parseFile.getName();
myObjects.add(new MyObject(fileName,fileURL));
} catch (Exception e) {
}
}
}
Later in your getView use the file URL to get the image only for the visible items in the listview. Such that your listview wont crash.

Android - How to "match" the data in mysql after pressed a button

In my project, im going to make a multiple choice type question. I can select the questions and answer from mysql, however, i cant do the "matching" of the answer between input answer and the data from mysql. I tried some solutions but they doesnt work as well. I need a big help on it. Below are my codes.
the java class that make multiple choice
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.normalmode);
new DataAsyncTask().execute();
}
public void onClick(View v){
inputtext = ((Button) v).getText().toString();
tv3 = (TextView)findViewById(R.id.textView3);
tv3.setText(inputtext);
if(inputtext == tv2.getText().toString()){
playerscore +=5;
} else {
playerscore +=1;
}
score.setText("Scores : " + playerscore);
new DataAsyncTask().execute();
}
class DataAsyncTask extends AsyncTask<String, String, String>{
#Override
protected String doInBackground(String... param) {
String result = DBConnector.executeQuery("SELECT * FROM questions ORDER BY RAND( ) LIMIT 1");
return result;
}
#Override
protected void onPostExecute(String result) {
question = (TextView)findViewById(R.id.textView_question);
fchoice = (Button)findViewById(R.id.Btn_choice1);
schoice = (Button)findViewById(R.id.Btn_choice2);
tchoice = (Button)findViewById(R.id.Btn_choice3);
tv2 = (TextView)findViewById(R.id.textView2);
score = (TextView)findViewById(R.id.textView_score);
try {
JSONArray jsonArray = new JSONArray(result);
JSONObject jsonData = jsonArray.getJSONObject(0);
question.setText(jsonData.getString("q_desc"));
fchoice.setText(jsonData.getString("fchoice"));
schoice.setText(jsonData.getString("schoice"));
tchoice.setText(jsonData.getString("tchoice"));
ans = jsonData.getString("q_ans");
tv2.setText(ans);
} catch(Exception e) {
Log.e("log_tag", e.toString());
}
}
}
}
three buttons are sharing same onClick in xml file by using
android:onClick="onClick"
the current problem i faced is that it always return "false" no matter i pressed which button. also, is there any way to store/pass "previous" async task data?
I have tried using internal storage but it doesnt work as well
EDIT:
my xml file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/LinearLayout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.95" >
<TextView
android:id="#+id/textView_score"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/player_score" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="0.95" >
<TextView
android:id="#+id/textView_question"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="#string/string_question"
android:textAppearance="?android:attr/textAppearanceMedium" />
<Button
android:id="#+id/Btn_choice3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:text="#string/third_choice"
android:onClick="onClick" />
<Button
android:id="#+id/Btn_choice2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/Btn_submit"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:text="#string/second_choice"
android:onClick="onClick" />
<Button
android:id="#+id/Btn_choice1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/Btn_choice2"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:text="#string/first_choice"
android:onClick="onClick" />
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:text="TextView" />
<TextView
android:id="#+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_toRightOf="#+id/textView1"
android:text="TextView" />
</RelativeLayout>
</LinearLayout
textview2 and textview3 are used to test my output and display them as text

try this if(inputtext.equals(tv2.getText().toString())) instead of if(inputtext == tv2.getText().toString())
becasue the == operator checks to see if the two strings are exactly the same object.
The .equals() method will check if the two strings have the same value.

Inflating a series of images to linearlayout in android app

I am working on a blackjack Android app and I am using this method to inflate card images. I use the values of the card to determine what image to load and the index to know what ImageView to add it to. I call this for each card in the players hand. The first card displays, but none after that show up. I checked the log and the image names and locations are correct for the second cards.
for(int i = 0; i < playerHand.getCardCount(); i++)
{
addPlayerCardImage(playerHand.getCardByIndex(i), i);
}
private void addPlayerCardImage(Card pCard, int cardIndex)
{
LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
cardImageView = inflater.inflate(R.layout.cardlayout, playerhandlayout , false);
String selectedImage = "card" + pCard.getValue() + pCard.getSuitAsCharacter();
int CardImageID = getResources().getIdentifier(selectedImage, "drawable",getPackageName());
Log.d("FLAG", "Card " + selectedImage);
String cardLocation = "imageViewCard" + cardIndex;
int cardLocationID = getResources().getIdentifier(cardLocation, "id",getPackageName());
Log.d("FLAG", "Card location " + cardLocation);
ImageView cardImage = (ImageView) cardImageView.findViewById(cardLocationID);
cardImage.setImageResource(CardImageID);
playerhandlayout.addView(cardImageView);
}
This is inflated layout XML:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal" >
<ImageView
android:id="#+id/imageViewCard0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/cardback" />
<ImageView
android:id="#+id/imageViewCard1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/cardback" />
<ImageView
android:id="#+id/imageViewCard2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/cardback" />
<ImageView
android:id="#+id/imageViewCard3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/cardback" />
<ImageView
android:id="#+id/imageViewCard4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:src="#drawable/cardback" />
</LinearLayout>
playerhandlayout xml
<LinearLayout
android:id="#+id/playerhandlayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal" >
</LinearLayout>