I am trying to add an edit text view dynamically to a layout from the java class. However from what I have implemented nothing changes on my action. This is what I have:
public final void onCreate(final Bundle i){
int value = 0;
isEdit = false;
try
{
super.onCreate(i);
this.setContentView(R.layout.contactedit);
ContactList.soundIndicator = 0;
etPhoneNumber = new ArrayList<EditText>();
this.etPhoneNumber.add((EditText) this.findViewById(R.id.etPhoneNumberInput));
this.addNumberBtn = (Button) this.findViewById(R.id.addNumberEditText);
addNumberBtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
//etPhoneNumber.add(new EditText(ContactEdit.this));
try{
LinearLayout layout = (LinearLayout) findViewById(R.id.contacteditll);
EditText temp = new EditText(ContactEdit.this);
temp.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT));
etPhoneNumber.add(temp);
layout.addView(temp);
}catch(Exception e){
Log.d(TAG, "Failed to create new edit text");
}
}
});
}
This is the 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="wrap_content"
android:baselineAligned="true"
android:orientation="vertical"
android:id="#+id/contacteditll"
android:background="#drawable/darkimg">
<TextView
android:id="#+id/titlePrint"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/titlePrompt"
/>
<Spinner
android:id="#+id/spContactTitle"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:prompt="#string/titlePrompt"
/>
<TextView
android:text="#string/namePrint"
android:id="#+id/namePrint"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</TextView>
<EditText android:layout_width="match_parent"
android:hint="#string/returnName"
android:id="#+id/etFirstNameInput"
android:layout_height="wrap_content"
android:layout_toRightOf= "#+id/namePrint">
</EditText>
<TextView
android:text="#string/secondPrint"
android:id="#+id/secondPrint"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</TextView>
<EditText android:layout_width="match_parent"
android:hint="#string/returnName"
android:id="#+id/etSecondNameInput"
android:layout_height="wrap_content"
android:layout_toRightOf= "#+id/namePrint">
</EditText>
<TextView android:id="#+id/numberPrint"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="#string/numberPrint">
</TextView>
<EditText android:layout_height="wrap_content"
android:layout_width="match_parent"
android:id="#+id/etPhoneNumberInput"
android:hint="#string/returnNumber">
</EditText>
<Button android:id="#+id/addNumberEditText"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:freezesText="true"
android:editable="false"
android:text="ADD"
/>
<include
android:id="#+id/customedittext"
layout="#layout/myedittext"/>
<TextView android:id="#+id/emailPrint"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:text="#string/emailPrint">
</TextView>
<EditText android:layout_height="wrap_content"
android:layout_width="match_parent"
android:id="#+id/etEmailAddressInput"
android:hint="#string/returnEmail">
</EditText>
<Button
android:freezesText="true"
android:editable="false"
android:layout_gravity="center"
android:layout_height="wrap_content"
android:id="#+id/btnSaveButton"
android:layout_width="wrap_content"
android:text="#string/save"
android:layout_below="#+id/emailInput"
/>
</LinearLayout>
Whenever I click on my button the action is heard but nothing is done. The layout of the page does not change even though the new edit text is in my list of edit texts and I am adding the new edit text to the layout.
Any help would be appreciated thanks.
It sure gets added but you are not seeing it cause there is no space left. Two things to test:
Place the LinearLayout inside a ScrollView.
Use the weight parameter.
Using the weight parameter:
EditText temp = new EditText(ContactEdit.this);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT, 1);
temp.setLayoutParams(params);
Related
How to remove the empty space in the dialog. My code-
<?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"
android:orientation="vertical"
android:layout_gravity="center_horizontal"
android:padding="10dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton
android:id="#+id/quality_dialog_2x_radio_btn_view_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="#+id/quality_dialog_2x_view_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="2X"
android:textSize="16sp"
android:textColor="#003FBC"
android:padding="5dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton
android:id="#+id/quality_dialog_1_5x_radio_btn_view_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="#+id/quality_dialog_1_5x_view_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1.5X"
android:textSize="16sp"
android:textColor="#003FBC"
android:padding="5dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton
android:id="#+id/quality_dialog_1_point_25_x_radio_btn_view_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="#+id/quality_dialog_1_point_25_x_view_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1.25X"
android:textSize="16sp"
android:textColor="#003FBC"
android:padding="5dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton
android:id="#+id/quality_dialog_normal_radio_btn_view_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="#+id/quality_dialog_normal_view_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Normal"
android:textSize="16sp"
android:textColor="#003FBC"
android:padding="5dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton
android:id="#+id/quality_dialog_normal_75x_radio_btn_view_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="#+id/quality_dialog_point_75x_view_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="0.75X"
android:textSize="16sp"
android:textColor="#003FBC"
android:padding="5dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<RadioButton
android:id="#+id/quality_dialog_5x_radio_btn_view_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="#+id/quality_dialog_point_5x_view_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="0.5X"
android:textSize="16sp"
android:textColor="#003FBC"
android:padding="5dp"/>
</LinearLayout>
</LinearLayout>
My Java Code
View alertLayout = View.inflate(this, R.layout.quality_dialog_layout, null);
TextView quality2XView = alertLayout.findViewById(R.id.quality_dialog_2x_view_id);
TextView quality1_5View = alertLayout.findViewById(R.id.quality_dialog_1_5x_view_id);
TextView quality1_Point25View = alertLayout.findViewById(R.id.quality_dialog_1_point_25_x_view_id);
TextView qualityNormalView = alertLayout.findViewById(R.id.quality_dialog_normal_view_id);
quality_point75View = alertLayout.findViewById(R.id.quality_dialog_point_75x_view_id);
quality_point5View = alertLayout.findViewById(R.id.quality_dialog_point_5x_view_id);
quality2XRadioBtn = alertLayout.findViewById(R.id.quality_dialog_2x_radio_btn_view_id);
quality1_5RadioBtn = alertLayout.findViewById(R.id.quality_dialog_1_5x_radio_btn_view_id);
quality1_Point25RadioBtn = alertLayout.findViewById(R.id.quality_dialog_1_point_25_x_radio_btn_view_id);
qualityNormalRadioBtn = alertLayout.findViewById(R.id.quality_dialog_normal_radio_btn_view_id);
quality_point75RadioBtn = alertLayout.findViewById(R.id.quality_dialog_normal_75x_radio_btn_view_id);
quality_point5RadioBtn = alertLayout.findViewById(R.id.quality_dialog_5x_radio_btn_view_id);
AlertDialog.Builder alert = new AlertDialog.Builder(this);
alert.setView(alertLayout);
alert.setCancelable(true);
qualityAlertDialog = alert.create();
qualityAlertDialog.show();
Suggestion 1:
In order to customize the AlertDialog theme you have to create a new theme for it, which is a bit complicated and quite hard as you have also to create proper images etc.
Regarding this option you can check this topic here
Suggestion 2:
Include the button in the xml:
<Button android:text="OK"
style="?android:attr/borderlessButtonStyle" />
Suggestion 3:
Use the AlertDialog options and don't change the theme, this will add proper spacing in all options and follow the android theming so it will not look strange, but will not remove the spacing you mentioned:
AlertDialog.Builder alert = new AlertDialog.Builder(this);
alert.setSingleChoiceItems(R.array.your_array_options, null/* no item preselected*/,
new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// handle the item selection here
}
}
);
alert.setCancelable(true);
qualityAlertDialog = alert.create();
qualityAlertDialog.show();
and the your_array_options will be in a file res/values/array.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string-array
name="your_array_options">
<item>2X</item>
<item>1.5X</item>
<item>1.25X</item>
...
</string-array>
</resources>
Suggestion 4:
In order to have full customized theme then do not use AlertDialog at all but DialogFragment:
public class MyDialogFragment extends DialogFragment {
// ...
// Empty constructor required for DialogFragment
public MyDialogFragment() {}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.quality_dialog_layout, container);
TextView quality2XView = alertLayout.findViewById(R.id.quality_dialog_2x_view_id);
TextView quality1_5View = alertLayout.findViewById(R.id.quality_dialog_1_5x_view_id);
TextView quality1_Point25View = alertLayout.findViewById(R.id.quality_dialog_1_point_25_x_view_id);
TextView qualityNormalView = alertLayout.findViewById(R.id.quality_dialog_normal_view_id);
quality_point75View = alertLayout.findViewById(R.id.quality_dialog_point_75x_view_id);
quality_point5View = alertLayout.findViewById(R.id.quality_dialog_point_5x_view_id);
quality2XRadioBtn = alertLayout.findViewById(R.id.quality_dialog_2x_radio_btn_view_id);
quality1_5RadioBtn = alertLayout.findViewById(R.id.quality_dialog_1_5x_radio_btn_view_id);
quality1_Point25RadioBtn = alertLayout.findViewById(R.id.quality_dialog_1_point_25_x_radio_btn_view_id);
qualityNormalRadioBtn = alertLayout.findViewById(R.id.quality_dialog_normal_radio_btn_view_id);
quality_point75RadioBtn = alertLayout.findViewById(R.id.quality_dialog_normal_75x_radio_btn_view_id);
quality_point5RadioBtn = alertLayout.findViewById(R.id.quality_dialog_5x_radio_btn_view_id);
// This will also require to add extra buttons in the xml!
// getDialog().setTitle("If you want to change the title");
return view;
}
}
I have created Dialog Box with 4 EditText. But now I need to do this by dynamically depends on API response JsonObject count.
Here is my response:
{
"additional_charges":{
"1":"121324324",
"2":"245657687",
"3":"379809733",
"4":"4467797894"
}
}
If "additional_charges", has "1","2","3" ---> I have to show 3
Edittext.
If "additional_charges", has "1","2","3","4" ---> I have to show 4
Edittext in Dialog box.
How to do this?
dialog.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/fare_id"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#color/white"
android:orientation="vertical">
<TextView
android:id="#+id/currentlocTxt"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0.2"
android:ellipsize="marquee"
android:fadingEdge="horizontal"
android:gravity="center"
android:lines="1"
android:marqueeRepeatLimit="marquee_forever"
android:padding="5dp"
android:scrollHorizontally="true"
android:singleLine="true"
android:text="#string/additionalcharge"
android:textColor="#color/button_accept"
android:textSize="15sp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_margin="5dp"
android:id="#+id/chargeType"
android:orientation="vertical"
android:padding="3dp"
android:weightSum="1">
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginTop="#dimen/com_facebook_share_button_compound_drawable_padding"
android:background="#color/hintcolor" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:weightSum="1">
<Button
android:id="#+id/cancelBut"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:layout_weight="0.5"
android:background="#color/white"
android:text="Cancel"
android:textColor="#color/button_accept" />
<View
android:layout_width="1dp"
android:layout_height="match_parent"
android:layout_marginTop="#dimen/com_facebook_share_button_compound_drawable_padding"
android:background="#color/hintcolor" />
<Button
android:id="#+id/submitBut"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="0.5"
android:background="#color/white"
android:text="Submit"
android:textColor="#color/button_accept" />
</LinearLayout>
</LinearLayout>
Dialog.class:
private void ShowDialog(final String completeUrl, Context context) {
if (NotificationAct.passenger_mobile != null) {
final View view = View.inflate(OngoingAct.this, R.layout.additional_charges, null);
cDialog = new Dialog(OngoingAct.this, R.style.dialogwinddow);
cDialog.setContentView(view);
cDialog.setCancelable(false);
cDialog.show();
FontHelper.applyFont(OngoingAct.this, cDialog.findViewById(R.id.alert_id));
LinearLayout linlay_container = (LinearLayout) findViewById(R.id.chargeType);
//length from json response
int arrayLength = 4;
EditText editText[] = new EditText[0];
for (int i = 0; i < arrayLength; i++) {
editText[i] = new EditText(this);
editText[i].setBackgroundResource(R.color.white);
editText[i].setId(i);
linlay_container.addView(editText[i]);
}
final Button button_success = (Button) cDialog.findViewById(R.id.submitBut);
final Button button_failure = (Button) cDialog.findViewById(R.id.cancelBut);
button_failure.setVisibility(View.VISIBLE);
}
}
Firstly, parse the Json response and get the length of the array.
Then, create a layout container in the Dialog box where you want to add the EditText's.
Then, you can iterate through for loop by creating new EditText object and adding it to the container according to the array list.
Have a look on a code snippets,
LinearLayout linlay_container=(LinearLayout)findViewById(R.id.linlay_container);
//length from json response
int arrayLength=?;
for (int i = 0; i <arrayLength ; i++) {
EditText editText=new EditText(this);
linlay_container.addView(editText);
}
Here, linlay_container is the container layout of Dialog box in which you want to add EditText and arraylength is the array size from your json response.
I am working on an application where I have multiple linear layouts which are dynamically generated. Each linearlayout has an Id field, Name and a radioGroup containing two radio buttons for Yes and No.
I am also providing a button at bottom of the page so that once the button is clicked, All the YES radio buttons are selected.
How can i achive this as the layout is dynamically generated based on some data:
Here is my layout which is repeated dynamically:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="match_parent"
android:weightSum="10">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="2">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="10">
<LinearLayout
android:orientation="vertical"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1"
android:id="#+id/RollNum"
android:textSize="20dp"
android:textColor="#color/black"
android:gravity="center"
/>
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="0dp"
android:layout_height="70dp"
android:layout_weight="6"
android:gravity="center">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Amandeep Singh and some very very long name"
android:gravity="center"
android:id="#+id/Name"
android:textSize="20dp"
android:textColor="#color/black"/>
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="3"
android:gravity="center">
<RadioGroup
android:id="#+id/radioAttendance"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation='horizontal'
android:gravity="center">
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="P"
android:id="#+id/PresentCheck"
android:textSize="10dp"
android:gravity="center"
android:textColor="#color/black"
/>
<RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="A"
android:id="#+id/AbsentCheck"
android:textSize="15dp"
android:gravity="center"
android:textColor="#color/black"
/>
</RadioGroup>
</LinearLayout>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="0.1">
<View
android:layout_width="fill_parent"
android:layout_height="0.1dp"
android:background="#ffffff" />
</LinearLayout>
</LinearLayout>
I tried following approach but didn't work:
//some code before it for button clicks and all other stuffs
LayoutInflater inflater = (LayoutInflater)context.getSystemService
(Context.LAYOUT_INFLATER_SERVICE);
LinearLayout scrollViewLinearlayout = (LinearLayout)findViewById(R.id.parent); // The layout inside scroll view
//int count=50;
Studentlist = Arrays.copyOfRange(StudentlistInterim, 1, StudentlistInterim.length);
for(int i = 0; i < Studentlist.length; i++){
String data = Studentlist[i];
String RollNum = data.split("--")[0];
String Name = data.split("--")[1];
Log.d("Name is:", Name);
LinearLayout layout2 = new LinearLayout(context);
layout2.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
View item = inflater.inflate(R.layout.item_layout, null, false);
layout2.addView(item);
layout2.setId(i);
TextView trollnum = (TextView) item.findViewById(R.id.RollNum);
trollnum.setText(RollNum);
TextView tname = (TextView) item.findViewById(R.id.Name);
tname.setText(Name);
RadioButton rPresent = (RadioButton)item.findViewById(R.id.PresentCheck);
RadioButton rAbsent = (RadioButton)item.findViewById(R.id.AbsentCheck);
rPresent.setId(i); //tried to set a unique Id for all YES
rAbsent.setId(Studentlist.length+i); // to make the id unique for each YES and NO entry
scrollViewLinearlayout.addView(layout2);
Log.d("Id is: ", trollnum.getText().toString());
}
}
#Override
public void onClick(View v){
switch(v.getId()){
case R.id.bMarkAllPresent:
for (int i=0;i<Studentlist.length;i++){//iterate over the list for the radio buttons
RadioButton r1 = (RadioButton)findViewById(i);
RadioGroup rg = (RadioGroup)findViewById(R.id.radioAttendance);
rg.check(r1.getId()); /* get the id of radio button one by one and mark it checked*/
//Log.d("Button check id:", (r1.getId()));
}
break;
I got 'java.lang.ClassCastException: android.widget.LinearLayout cannot be cast to android.widget.RadioButton' error in the onClick() method
I am not sure if this approach will work or if this is the best approach.
Please help.
Edit-1:
After using the List way of doing it as per the answer.
RadioButton rPresent = (RadioButton)item.findViewById(R.id.PresentCheck);
RadioButton rAbsent = (RadioButton)item.findViewById(R.id.AbsentCheck);
//rPresent.setId(i);
//rAbsent.setId(Studentlist.length+i); // to make the id unique for each present and absent entry
presentRadioList.add(rPresent); //getting null pointer here
absentRadioList.add(rAbsent);
I am getting null pointer exception.
I suggest keeping two List<RadioButton>s, one for the "yes" selections and one for the "no" selections. Then you can just iterate through the appropriate list.
I have an OnClickListener that listens to Button A clicks. I also have 2 TextViews below the Button.
I want that on every click on Button A, the 2 TextViews will switch their places between them, like this:
Before clicking:
TextView A
TextView B
After clicking:
TextView B
TextView A
How can I do it? Is there a special function that meant to do that? or some kind of a trick? Thanks!
actvity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="start"
tools:context="com.intap.tof.MainActivity">
<TextView
android:id="#+id/txtA"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="20dp"
android:visibility="visible"/>
<TextView
android:id="#+id/txtB"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_below="#+id/txtA
android:layout_marginTop="83dp"
android:textAppearance="?android:attr/textAppearanceMedium"
android:visibility="visible"
android:textSize="20dp" />
</RelativeLayout>
MainActivity.java:
txtA = (TextView) findViewById(R.id.txtA);
txtB = (TextView) findViewById(R.id.txtB);
float mAX = txtA.getX();
float mAY = txtA.getY();
float mBX = txtB.getX();
float mBY= txtB.getY();
txtA.setX(mBX);
txtA.setY(mBY);
txtB.setX(mAX);
txtB.setY(mAY);
Trick is changing the x and y axis of both views :
Your xml code:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="start"
tools:context="com.intap.tof.MainActivity">
<TextView
android:id="#+id/txtA"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:textAppearance="?android:attr/textAppearanceMedium"
android:textSize="20dp"
android:text="A"
android:tag="A"
android:clickable="true"
android:visibility="visible"/>
<TextView
android:id="#+id/txtB"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_alignParentLeft="true"
android:layout_below="#+id/txtA"
android:text="B"
android:tag="B"
android:clickable="true"
android:layout_marginTop="83dp"
android:textAppearance="?android:attr/textAppearanceMedium"
android:visibility="visible"
android:textSize="20dp" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="switch"
android:id="#+id/btn1"
android:onClick="onClickButton"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
Java Code :
public class MainActivity extends Activity {
TextView txtA,txtB;
boolean _isOnTxtA;
Button btn1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txtA = (TextView)findViewById(R.id.txtA);
txtB = (TextView)findViewById(R.id.txtB);
btn1 = (Button)findViewById(R.id.btn1);
}
public void onClickButton(View v)
{
float mPos1x,mPos1y,mPos2x,mPos2y;
mPos1x = txtB.getX();
mPos1y = txtB.getY();
mPos2x = txtA.getX();
mPos2y= txtA.getY();
if(_isOnTxtA)
{
txtB.setX(mPos2x);
txtB.setY(mPos2y);
txtA.setX(mPos1x);
txtA.setY(mPos1y);
_isOnTxtA = false;
}
else
{
txtB.setX(mPos2x);
txtB.setY(mPos2y);
txtA.setX(mPos1x);
txtA.setY(mPos1y);
_isOnTxtA= true;
}
}
}
View.bringToFront method may be useful.
Where your layout is like:
<LinearLayout>
<TextView A>
<TextView B>
</LinearLayout>
To call bringToFront on TextView A will bring it front (the last position in the parent LinearLayout).
<LinearLayout>
<TextView B>
<TextView A>
</LinearLayout>
For more detailed example, below is layout.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/text_holder"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<TextView
android:id="#+id/text_a"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/text_a" />
<TextView
android:id="#+id/text_b"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/text_b" />
</LinearLayout>
In your OnClickListener (in your Activity) call:
View textViewA = findViewById(R.id.text_a);
textViewA.bringToFront();
This should work.
Toggling behavior can be achieved by this application. For example:
ViewGroup textHolder = (ViewGroup) findViewById(R.id.text_holder);
textHolder.getChildAt(0).bringToFront();
ViewGroup.getChildAt(0) always returns the first child of the ViewGroup. So everytime you call bringToFront on the first child will be bring to front.
All previous answers do not work because you use a relative layout where a linear layout will suffice.
If you have to go RelativeLayout, do the following in your click listener
TextView textA = (TextView) findViewById(R.id.txtA);
TextView textB = (TextView) findViewById(R.id.txtB);
RelativeLayout.LayoutParams textALayoutParams = (RelativeLayout.LayoutParams) textA.getLayoutParams();
textALayoutParams.addRule(RelativeLayout.BELOW, R.id.txtB);
textA.setLayoutParams(textALayoutParams);
RelativeLayout.LayoutParams textBLayoutParams = (RelativeLayout.LayoutParams) textB.getLayoutParams();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
textBLayoutParams.removeRule(RelativeLayout.BELOW);
} else {
textBLayoutParams.addRule(RelativeLayout.BELOW,0);
}
textB.setLayoutParams(textBLayoutParams);
This will place A under B. You can do the same for reversing.
i'm doing a cable length calculator, and i'm having trouble with negative numbers.
EditTexts are like this
<EditText android:layout_height="wrap_content" android:layout_weight="1" android:inputType="numberDecimal|numberSigned" android:layout_width="40px" android:id="#+id/rxmax">
</EditText>
Then i use them like this:
final EditText rxmax = (EditText) findViewById(R.id.rxmax);
double RXmax = new Double(rxmax.getText().toString());
After i do a simple calculation:
double OPBmax = TXmax - RXmax;
Somewhere the inputted negative number turns positive. i'm guessing at the toString conversation but i don't find anything on how to prevent this.
Use
android:digits="0123456789"
EX:
<EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:digits="0123456789"
android:gravity="center"
android:inputType="numberSigned"
android:textColor="#color/black"
android:textSize="#dimen/font_size_small" />
I've tried this, and it works...
Activity:
double RXmax;
EditText rxmax;
TextView tv;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
rxmax = (EditText) findViewById(R.id.rxmax);
tv = (TextView) findViewById(R.id.text);
}
public void click(View v) {
RXmax = new Double(rxmax.getText().toString());
tv.setText(Double.toString(RXmax));
}
main.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="fill_parent"
android:layout_height="fill_parent">
<EditText android:layout_height="wrap_content"
android:layout_weight="1" android:inputType="numberDecimal|numberSigned"
android:layout_width="40px" android:id="#+id/rxmax">
</EditText>
<TextView android:id="#+id/text" android:layout_width="fill_parent"
android:layout_height="wrap_content" android:text="#string/hello" />
<Button android:layout_height="wrap_content" android:id="#+id/button1"
android:layout_weight="1" android:text="Button" android:layout_width="wrap_content"
android:onClick="click"></Button>
</LinearLayout>
If I type -2, after clicking the TextView displays -2.0
If you're using Eclipse, try Project --> Clean..., and select your project. Maybe this will help.