I'm developing simple android app which should have different texts and text size according to the clicks on it. For implementation I have used ConstraintLayout with TextSwitcher to provide animation when texts are changing. Here are sources:
Layout:
<android.support.constraint.ConstraintLayout
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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.android.counter.layout_main">
<TextSwitcher
android:id="#+id/text_body"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:inAnimation="#anim/push_down_in"
android:outAnimation="#anim/push_down_out" />
</android.support.constraint.ConstraintLayout>
Code:
private TextSwitcher mTextBody;
private int mTextSize = 20;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup viewGroup, Bundle bundle) {
View view = inflater.inflate(R.layout.layout_main, viewGroup, false);
mTextBody = (TextSwitcher) view.findViewById(R.id.text_body);
mTextBody.setFactory(mViewSwitcherFactory);
mTextBody.setText(getString(R.string.intro_text));
mTextBody.setOnClickListener(mOnSwitcherClickListener);
return view;
}
private ViewSwitcher.ViewFactory mViewSwitcherFactory = new ViewSwitcher.ViewFactory() {
#Override
public View makeView() {
TextView textView = new TextView(getActivity());
textView.setGravity(Gravity.CENTER);
textView.setTextSize(mTextSize);
return textView;
}
};
private View.OnClickListener mOnSwitcherClickListener = new View.OnClickListener() {
#Override
public void onClick(View view) {
mTextSize = 40;
mTextBody.setText(getString(R.string.text_after_click));
}
};
The initial load of intro text and size are ok, but after the performing click on it only text changes not text size. So, the question is how one can change text size (larger) dynamically when it comes setFactory method of the TextSwitcher?
Any help would be appreciated.
private View.OnClickListener mOnSwitcherClickListener = new View.OnClickListener() {
#Override
public void onClick(View view) {
mTextSize = 40;
mTextBody.setText(getString(R.string.text_after_click));
}
};
in above method you are not changing text size you are changing only text
change with
private View.OnClickListener mOnSwitcherClickListener = new View.OnClickListener() {
#Override
public void onClick(View view) {
mTextSize = 40;
TextView tv = (TextView)mTextBody.getCurrentView();
tv.setText(getString(R.string.text_after_click));
tv.setTextSize(mTextSize);
}
};
Related
I created a Custom View and add setOnClickListener...
View's touch range is strange
how do i fix that?
red square is touch range...
XML file(custom.xml)
<LinearLayout>
<TextView> ~~
<TextView> ~~
</LinearLayout>
JAVA code(custom.java)
public class Custom_Lab_Button extends LinearLayout {
LinearLayout cus_lab_ll;
TextView cus_lab_tv1, cus_lab_tv2;
private void initView(Context context) {
inflate(getContext(), R.layout.custom_lab_button, this);
// String infService = Context.LAYOUT_INFLATER_SERVICE;
// LayoutInflater layoutInflater = (LayoutInflater)context.getSystemService(infService);
//// layoutInflater.inflate(R.layout.custom_lab_button, this, false);
// View v = layoutInflater.inflate(R.layout.custom_lab_button, getContent(), false);
// addView(v);
cus_lab_ll = (LinearLayout) findViewById(R.id.cus_lab_ll);
cus_lab_tv1 = (TextView) findViewById(R.id.cus_lab_tv1);
cus_lab_tv2 = (TextView) findViewById(R.id.cus_lab_tv2);
}
public void setCus_lab_ll_back(int cus_ll_resID) {
cus_lab_ll.setBackgroundColor(cus_ll_resID);
}
public void setCus_lab_ll_margin(LayoutParams layoutParams){
cus_lab_ll.setLayoutParams(layoutParams);
}
public LayoutParams getCus_lab_ll_margin(){
return (LayoutParams) cus_lab_ll.getLayoutParams();
}
}
Main Java Code
RelativeLayout cl_img = (RelativeLayout)view.findbyid(R.id.cl_img);
labButton = new Custom_Lab_Button(getActivity());
LinearLayout.LayoutParams tttt = labButton.getCus_lab_ll_margin();
tttt.leftMargin = 300;
tttt.topMargin = 300;
labButton.setCus_lab_ll_back(Color.BLUE);
labButton.setCus_lab_tv1_txt("lab1");
labButton.setCus_lab_ll_margin(tttt);
cl_img.addView(labButton);
labButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getContext(), "it is lab button 1/", Toast.LENGTH_SHORT).show();
}
});
I had similar problem, use padding instead of margin.
I solved.. myself :)
labButton = new Custom_Lab_Button(getContext());
LinearLayout.LayoutParams tttt = labButton.getCus_lab_ll_margin();
tttt.leftMargin = 300;
tttt.topMargin = 300;
labButton.setCus_lab_tv1_txt("lab1");
labButton.setCus_lab_ll_margin(tttt);
labButton.setCus_lab_ll_back(Color.BLUE);
cl_img.setBackgroundColor(Color.GREEN);
cl_img.addView(labButton);
labButton.cus_lab_ll.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getContext(), "it is lab button 1", Toast.LENGTH_SHORT).show();
}
});
[labButton.cus_lab_ll.setOnClickListener] is reason..
I'm currently trying to add a user-defined number of TextViews and EditText to an activity, but can't seem to do it other than hard-coding it by creating a variety of different activities.
The objective of this activity is to take the names of the players, the number of which is relayed by the intent extra from the preceding activity.
I'm trying to add both a TextView saying "Player X: " and an EditText to type the name of the player for each player
I know from this post: How to create a variable number of textviews in android that I have to do this programmatically, however, it does not seem to work for me (the activity remains blank when tested)
I have tried creating a temp LinearLayout to which I add the two views in a for(), still nothing.
Any ideas? Am I on the right track?
Best regards
[EDIT] Code is here :
public class players extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_players);
Bundle extras = new Bundle();
final int numPlayers = extras.getInt("num");
final LinearLayout myLayout = findViewById(R.id.lin_Re);
final ArrayList<Player> players = new ArrayList<>();
int size = numPlayers; // total number of TextViews to add
TextView[] tv = new TextView[size];
TextView temp;
EditText[] et = new EditText[size];
EditText temp2;
LinearLayout temp3;
for (int i = 0; i < size; i++)
{
temp = new TextView(this);
temp2 = new EditText(this);
temp3 = new LinearLayout(this);
temp.setText("Player " + i + " : "); //arbitrary task
// add the textview to the linearlayout
temp3.addView(temp);
temp3.addView(temp2);
tv[i] = temp;
et[i] = temp2;
myLayout.addView(temp3);
}
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
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:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:gravity="center"
android:id="#+id/lin_Re">
</LinearLayout>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/b_send"/>
</LinearLayout>
There is 2 way to achieve this:
1. Use a RecyclerView [Recommended]
2. Add TextView and EditText ( which is nested in a Horizontal LinearLayout) into a Vertical LinearLayout nested in a ScrollView programmatically
The first solution I describe below is quite simple if you're familiar with RecyclerView or ListView, the second solution (your current track) is a bit tricky but still achievable.
Solution 1:
MainActivity
public class MainActivity extends AppCompatActivity {
RecyclerView mPlayerList;
List<String> mPlayerNames;
PlayerAdapter mAdapter;
EditText mInput;
Button mCreateButton;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mPlayerNames = new ArrayList<>();
// setup recycler view
mPlayerList = findViewById(R.id.player_list);
mPlayerList.setLayoutManager(new LinearLayoutManager(this));
mAdapter = new PlayerAdapter();
mPlayerList.setAdapter(mAdapter);
// setup input EditText
mInput = findViewById(R.id.input);
// setup Create button
mCreateButton = findViewById(R.id.create_button);
mCreateButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// clear old player names
mPlayerNames.clear();
// read user input: number of player:
String input = mInput.getText().toString();
int numberOfPlayer;
try {
numberOfPlayer = Integer.parseInt(input);
} catch (NumberFormatException e) {
Toast.makeText(MainActivity.this, "Invalid input!!!", Toast.LENGTH_SHORT).show();
return;
}
for (int i = 0; i < numberOfPlayer; ++i) {
mPlayerNames.add("Player #" + (i + 1));
}
// make change on recycler view
mAdapter.notifyDataSetChanged();
// dismiss keyboard
InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(mInput.getWindowToken(), 0);
}
});
}
private class PlayerAdapter extends RecyclerView.Adapter<PlayerAdapter.PlayerHolder> {
#Override
public PlayerHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(MainActivity.this).inflate(R.layout.item_layout, parent, false);
return new PlayerHolder(v);
}
#Override
public void onBindViewHolder(PlayerHolder holder, int position) {
holder.bind(mPlayerNames.get(position));
}
#Override
public int getItemCount() {
return mPlayerNames.size();
}
public class PlayerHolder extends RecyclerView.ViewHolder {
TextView mPlayerLabel;
EditText mPlayerName;
public PlayerHolder(View itemView) {
super(itemView);
mPlayerLabel = itemView.findViewById(R.id.player_label);
mPlayerName = itemView.findViewById(R.id.player_name);
}
public void bind(String playerName) {
mPlayerLabel.setText(playerName);
mPlayerName.setHint("Name of " + playerName);
}
}
}
}
The sample project can be found here:
https://github.com/raiytu4/stackcase004
I'm use recyclerview and holder adapter. This have textview and maxlines is 4. I want to if user click then expand again click then collapse.
My codes is working but i have an issue;
When i click textview this going to expanded work fine but when i was scroll to down list some textview is automatic expanded state(but i did not touch them).
XML:
<android.support.v7.widget.AppCompatTextView
android:id="#+id/text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="#dimen/uiPadding_4dp"
android:maxLines="4"/>
Holder:
private final List<Integer> listReadMore = new ArrayList<>();
public void onBind(final Holder holder, final int position) {
final Obj obj = getObj(position);
final int id = obj.id();
final String text = obj.text();
holder.text.post(new Runnable() {
#Override
public void run() {
if(holder.text.getLineCount() >= maxLine)
listReadMore.add(id);
}
});
holder.text.setText(Kit.doHtmlText(text));
holder.text.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if(listReadMore.contains(id)){
ObjectAnimator animation = ObjectAnimator.ofInt(
holder.text,
"maxLines",
holder.text.getLineCount());
animation.setDuration(600);
animation.start();
listReadMore.remove(listReadMore.indexOf(id));
}else{
ObjectAnimator animation = ObjectAnimator.ofInt(holder.text, "maxLines", 4);
animation.setDuration(400);
animation.start();
listReadMore.add(id);
}
}
});
}
When i was use simplify code I'm having the same problem again..
holder.text.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
holder.text.setMaxLines(100);
}
});
I was use https://github.com/Manabu-GT/ExpandableTextView this api but have some issue on recyclerview.
I dont know what can i do..
I am implementing android GridviewPager android wear application. with the help of this code sample.
I want to display 2 action buttons, its onClick events, its text, background image. current code is looks like , in round wear emulator
and square emulator
my questions are.
1) How to remove top most black part in round emulator
2) Center image and text in square emulator
3) Perform onClick events on action buttons click
GridPagerAdapter
public class GridPagerAdapter extends FragmentGridPagerAdapter{
private Context mContext;
private ArrayList<GridRow> mRows;
public GridPagerAdapter(Context mContext, FragmentManager fm) {
super(fm);
this.mContext = mContext;
initAdapter();
}
private void initAdapter() {
mRows = new ArrayList<GridRow>();
GridRow row1 = new GridRow();
row1.addPage(new GridPage("", " Add Call", R.drawable.addcall, R.mipmap.ic_launcher));
row1.addPage(new GridPage("", " View Map", R.drawable.view_map, R.mipmap.ic_launcher));
mRows.add(row1);
}
#Override
public Fragment instantiateItem(ViewGroup container, int row, int column) {
Log.d("GridPagerAdapter","in instantiateItem row = "+row+"column = "+column);
return super.instantiateItem(container, row, column);
}
#Override
public Fragment getFragment(int row, int col) {
GridPage page = mRows.get(row).getPage(col);
Log.d("GridPagerAdapter","in getFragment row = "+row+"column = "+col);
CardFragment cardFragment = CardFragment.create(page.getTitle(), page.getText(), page.getIcon());
return cardFragment;
}
#Override
public Drawable getBackgroundForPage(int row, int column) {
GridPage page = mRows.get(row).getPage(column);
return getBackgroundForRow(page.getBackground());
}
#Override
public int getRowCount() {
return mRows.size();
}
#Override
public int getColumnCount(int row) {
return mRows.get(row).getSize();
}
}
Wear Activity
public class WearActivity extends Activity {
private GridViewPager mPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_wear);
mPager = (GridViewPager) findViewById(R.id.gridPager);
mPager.setAdapter(new GridPagerAdapter(this, getFragmentManager()));
}
}
Thanks for help in advance
Finally get the answer
1) Add following code in one of xml (rect,round)
<ImageView
android:id="#+id/imgview"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_marginTop="35dp"
android:layout_gravity="center_horizontal"
android:src="#drawable/card1"/>
<TextView android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_marginTop="10dp"
android:layout_gravity="center_horizontal"
android:layout_height="wrap_content"
android:text="#string/hello_square" />
2) Edit instantiateItem method
#Override
public Object instantiateItem(ViewGroup viewGroup, final int row, final int col) {
final View view = LayoutInflater.from(getApplicationContext()).inflate(R.layout.rect_activity_wear, viewGroup, false);
final TextView textView = (TextView) view.findViewById(R.id.text);
final ImageView imageView = (ImageView) view.findViewById(R.id.imgview);
imageView.setImageResource(carImageIDs[row][col]);
textView.setText(ImageTexts[row][col]);
viewGroup.addView(view);
imageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Log.d("Wear","Image Click row = "+row+"col = "+col);
}
});
textView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Log.d("Wear","text Click row = "+row+"col = "+col);
}
});
return view;
}
Hope it helps someone , happy coding
I'm trying to generate a full screen TextView that auto-appends a random binary number to it. I wrote this code:
Button button;
TextView textView;
Random rand;
private static final char[] ALPHA_NUMERIC_STRING = "01".toCharArray();
public PlaceholderFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_main, container,false);
rand = new Random();
textView = (TextView) rootView.findViewById(R.id.textView1);
getActivity().runOnUiThread(new Runnable() {
#Override
public void run() {
for (int i=0; i<1000; i++){
textView.append(String.valueOf(ALPHA_NUMERIC_STRING[rand.nextInt(ALPHA_NUMERIC_STRING.length)]));
}
}
});
button = (Button) rootView.findViewById(R.id.button1);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
new CountDownTimer(5000, 1) {
public void onTick(long millisUntilFinished) {
textView.append(String.valueOf(ALPHA_NUMERIC_STRING[rand.nextInt(ALPHA_NUMERIC_STRING.length)]));
final int scrollAmount = textView.getLayout().getLineTop(textView.getLineCount()) - textView.getHeight();
// if there is no need to scroll, scrollAmount will be <=0
if (scrollAmount > 0)
textView.scrollTo(0, scrollAmount);
else
textView.scrollTo(0, 0);
}
public void onFinish() {
textView.append("done!");
}
}.start();
}
});
return rootView;
}
This code works fine. It's writing a random string into my textView. The problem comes when my textView becomes really big. When it has a lot of chars, when I add a new char and try to append it, I notice the add and repaint process is really slow.
Does anybody know why is this being slowed down? How can I make it work fast?
PS: this code is located inside a Fragment.
Use TextView inside a ScrollView to display messages with any no.of lines.
I think this is good for your requirement. Try it once.
<TextView
android:id="#+id/tv"
android:layout_width="fill_parent"
android:layout_height="100px"
android:textColor="#f00"
android:textSize="25px"
android:typeface="serif"
android:textStyle="italic"/>
if you want to change dynamically whenever you want use as below:
TextView textarea = (TextView)findViewById(R.id.tv); // tv is id in XML file for TextView
textarea.setTextSize(20);