I've created a custom ViewGroup based on a LinearLayout.
ClearableEditText.java
package test.todolist;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
public class ClearableEditText extends LinearLayout{
private EditText editText;
private Button button;
public ClearableEditText (Context context){
super (context);
String service = Context.LAYOUT_INFLATER_SERVICE;
LayoutInflater li = (LayoutInflater)getContext ().getSystemService (service);
li.inflate (R.layout.clearable_edit_text, this, true);
editText = (EditText)findViewById (R.id.clearEditText);
button = (Button)findViewById (R.id.clearButton);
configButton ();
}
private void configButton (){
button.setOnClickListener (new Button.OnClickListener (){
public void onClick (View v){
editText.setText ("");
}
});
}
}
clearable_edit_text.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<EditText
android:id="#+id/clearEditText"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
<Button
android:id="#+id/clearButton"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/clear"
/>
</LinearLayout>
How can I use ClearableEditText now?
I've tried to put a node inside a layout (main.xml) in 2 ways:
<test.todolist.ClearableEditText/>
and
<test.todolist.clearable_edit_text/>
but none of them have worked.
My main.xml:
<?xml version="1.0" encoding="utf-8"?>
<test.todolist.ClearableEditText/>
My ToDoList.java (main activity):
package test.todolist;
import android.app.Activity;
import android.os.Bundle;
public class ToDoList extends Activity{
#Override
public void onCreate (Bundle savedInstanceState){
super.onCreate (savedInstanceState);
setContentView (R.layout.main);
}
}
Thanks.
Solved. The main.xml should be like:
<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android">
<test.todolist.ClearableEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</merge>
First, merge tag because it is needed when using custom views. My custom view have a LinearLayout root, so it's inefficient if I set another LinearLayout or FrameLayout root in main.xml to use my custom view. merge solves that.
And second, all views must have the layout_width and layout_height attributes.
Related
So so what im trying to implement has two parts
One im giving my edittext the passwordToggle for which im using
android.support.design.widget TextInputLayout+TextInputEditText
So this is how my edittext looks like
Part two is i want to add validation and set appropriate error message.
I need the error message to be shown as follows
My layout code is as follows
<android.support.design.widget.TextInputLayout
style="#style/editTextBold"
android:id="#+id/input_pwd_parent"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:hintAnimationEnabled="false"
app:hintEnabled="false"
app:passwordToggleEnabled="true">
<android.support.design.widget.TextInputEditText
android:id="#+id/input_pwd"
style="#style/editTextBold"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/transparent"
android:ems="10"
android:hint="#string/hint_pwd"
android:inputType="textPassword"
android:padding="10dp" />
</android.support.design.widget.TextInputLayout>
So what i want to know is
1.How do i hide/unhide the password toggle icon in the edittext via code?
2.Also how do i make the setError message appear in place of the passwordToggle icon(once i hide it via code)
Ended up creating a custom view
The component can be found here
https://github.com/vnh1991/CustomValidatorEditText
Import the lib project as a module ,
in your layout create a container
<?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="match_parent"
android:layout_height="match_parent"
tools:context="com.v2dev.customedittextdemo.MainActivity">
<LinearLayout
android:id="#+id/llContainer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:orientation="vertical"></LinearLayout>
<Button
android:id="#+id/btnValidate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_below="#+id/llContainer"
android:padding="10dp"
android:text="Validate" />
</RelativeLayout>
And in your activity load the component into the container
package com.v2dev.customedittextdemo;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.Toast;
import com.v_sQr_dev.customvalidatoredittext.CustomEdittext;
public class MainActivity extends AppCompatActivity {
private LinearLayout llContainer;
private Button btnValidate;
private CustomEdittext inputPwd;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
llContainer = (LinearLayout) findViewById(R.id.llContainer);
btnValidate = (Button) findViewById(R.id.btnValidate);
inputPwd = new CustomEdittext(llContainer, this);
inputPwd.setHint("PASSWORD");
btnValidate.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if(inputPwd.validate()){
Toast.makeText(MainActivity.this,"Input Valid",Toast.LENGTH_SHORT).show();
}
}
});
}
}
I'm relatively new to android development and I'm trying to find a way to inflate a view repeatedly each time when a button is pressed, in a different location, so every inflated view has its own position:
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class teamCreateScreen extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.team_locate_layout);
}
public void createTeam(View view) {
final RelativeLayout rlTeam = (RelativeLayout) findViewById(R.id.rlTeam);
View teamBox = View.inflate(this, R.layout.team_box, rlTeam);
final TextView teamBoxView = (TextView) findViewById(R.id.team_task_box);
teamBoxView.setX(0);
teamBoxView.setY(230);
}
}
The XML code of the layout:
<?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:id="#+id/rlTeam">
<Button
android:layout_width="60dp"
android:layout_height="60dp"
android:id="#+id/teamAddBtn"
android:text="+"
android:textSize="30sp"
android:onClick="createTeam"/>
</RelativeLayout>
XML code of the view that's being inflated:
<?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">
<TextView
android:layout_width="192dp"
android:layout_height="120dp"
android:id="#+id/team_task_box"
android:text="New Team" />
</RelativeLayout>
I want to use the same view to inflate multiple boxes with different coordinates in the layout. Every time I press the button to inflate the view again it inflates the box in the same coordinates so they overlap. I need to make the second box to appear to the first one's right, the third below 1st and so on, much like a grid of boxes.
Try this code and tell me whether it works. Remove the inflating of layout
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.RelativeLayout;
import android.widget.TextView;
public class teamCreateScreen extends Activity {
int i=0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.team_locate_layout);
}
public void createTeam(View view) {
final RelativeLayout rlTeam = (RelativeLayout) findViewById(R.id.rlTeam);
RelativeLayout.LayoutParams relativeParams = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
TextView tv=new TextView(getApplicationContext());
if(tv.getId()>0) {
relativeParams.addRule(RelativeLayout.BELOW, tv.getId());
}
tv.setId(i);
r1Team.addView(tv, relativeParams);
i++;
}
}
Declare int i=0; as a global variable and increment it in the createTeam() method.
I am hardly trying to create a simple application with a top menu and a changeable view below (by pressing the buttons in the menu fragment we change the view of the fragment below).
So, I have 2 fragments inside the main view but when trying to run the application in the emulator I get an error like:
Cause by android.app (bla bla bla, piece of crap Eclipse doesn't even allow copying the errors):
Trying to instantiate a class com.example.android.topmenu that is not a fragment
So, these are my XML layouts:
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical" >
<fragment
android:id="#+id/menuFragment"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:name="com.example.android.topmenu" >
</fragment>
<fragment
android:id="#+id/contentFragment"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:name="com.example.android.bottomcontent" >
</fragment>
</LinearLayout>
topmenu.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" >
<Button
android:id="#+id/Button1"
android:layout_width="wrap_content"
android:layout_height="match_parent" />
</LinearLayout>
bottom_content.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp"
android:orientation="vertical">
<TextView
android:id="#+id/textView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#+string/content_text" />
</LinearLayout>
and these are the classes for the main activity and the fragments
main_activity
package com.example.android;
import com.example.android.R;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
public class OLife extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
// The activity is being created
super.onCreate(savedInstanceState);
// Set view
setContentView(R.layout.main);
}
#Override
protected void onDestroy() {
super.onDestroy();
// The activity is about to be destroyed.
super.onDestroy();
// Stop method tracing that the activity started during onCreate()
android.os.Debug.stopMethodTracing();
}
}
topmenu
package com.example.android;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class OLifeMenu extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.topmenu, container, false);
return view;
}
}
bottomcontent
package com.example.android;
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
public class OLifeMain extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.bottom_content, container, false);
return view;
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
}
You should be using FragmentActivity instead of Activity that is because you are using support Fragments and multiple Fragments in your activity main
Edit
You can now use the Appcompat support library and extends AppCompatActivity to support toolbar and fragment for lower api.
In my case it turned out, I was doing stuff in onCreate in the wrong order:
setContentView(R.layout.activity_qr_code_scan);
super.onCreate(savedInstanceState);
instead of
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_qr_code_scan);
As you are using fragments in your layout and I suggest you to extend your class from fragment or fragment activity.
I'm trying to use Android Annotations and dynamically add layout components when my createNewRow button is clicked. The app runs and displays the default rows defined in activity_main.xml and, after clicking createNewButton I see children attached to my dynamicTable in the debugger but the new children are not displayed. Here is my main activity XML:
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/inflateLayout"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
android:paddingBottom="#dimen/activity_vertical_margin"
tools:context="net.richardriley.inflate.app.MainActivity">
<Button
android:id="#+id/createNewRow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/newRowButton"/>
<TableLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/dynamicTable">
<TableRow>
<TextView
android:text="#string/hello_world"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</TableRow>
</TableLayout>
</LinearLayout>
So simply a linear layout with a button and then a table container. Clicking createNewRow should add a new InflatedRow. Here is the XML for the row I want to dynamically add:
inflatedrow.xml
<?xml version="1.0" encoding="utf-8"?>
<merge xmlns:android="http://schemas.android.com/apk/res/android" >
<TextView
android:id="#+id/inflatedRowTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/inflatedRowLabel"/>
<Button
android:id="#+id/inflatedRowButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/defaultNewRowText"
/>
</merge>
Using AA my subclass for a tableRow is
InflatedRow.java
package net.richardriley.inflate.app;
import android.content.Context;
import android.widget.Button;
import android.widget.TableRow;
import android.widget.TextView;
import org.androidannotations.annotations.EViewGroup;
import org.androidannotations.annotations.ViewById;
/**
* inflate : Created by rgr on 20/03/14.
*/
#EViewGroup(R.layout.inflatedrow)
public class InflatedRow extends TableRow {
#ViewById
Button inflatedRowButton;
#ViewById
TextView inflatedRowTextView;
public InflatedRow(Context context) {
super(context);
}
}
and finally my main activity java itself:
MainActivity.java
package net.richardriley.inflate.app;
import android.support.v7.app.ActionBarActivity;
import android.widget.LinearLayout;
import android.widget.TableLayout;
import org.androidannotations.annotations.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import static ch.qos.logback.classic.android.BasicLogcatConfigurator.configureDefaultContext;
#OptionsMenu(R.menu.main)
#EActivity(R.layout.activity_main)
public class MainActivity extends ActionBarActivity {
static {
configureDefaultContext();
log = LoggerFactory.getLogger(MainActivity.class);
}
#ViewById
LinearLayout inflateLayout;
#ViewById
TableLayout dynamicTable;
public MainActivity() {
}
protected static Logger log;
#Click
void createNewRow() {
log.info("clicked");
InflatedRow_ inflatedRow=new InflatedRow_(this);
dynamicTable.addView(inflatedRow,0);
/*LayoutInflater layoutInflater= (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = layoutInflater.inflate(R.layout.inflatedrow,null);
dynamicTable.addView(view);*/
}
#OptionsItem
void openSettingsSelected(){
log.info("Hello");
}
}
In createNewRow if I use the inflater service directly it works.
What am I missing?
many thanks.
Don't use the annotated class when you're inflating the view and make sure you're calling the build method that inflates it.
#Click
void createNewRow() {
log.info("clicked");
InflatedRow inflatedRow = new InflatedRow_.build(this);
dynamicTable.addView(inflatedRow,0);
}
instead of 'View inflatedRow= new InflatedRow_(this);' I use 'View inflatedRow=InflatedRow_.build(this);'. This is documented for custom controls and I needed to do it for a merged control group too. So mea culpa to a degree!
#Click
void createNewRow() {
log.info("clicked");
InflatedRow_ inflatedRow=InflatedRow_.build(this);
dynamicTable.addView(inflatedRow,0);
}
Alternatively (and no idea if this would continue to be supported:
#Click
void createNewRow() {
log.info("clicked");
/*View inflatedRow = InflatedRow_.build(this);*/
InflatedRow_ inflatedRow = new InflatedRow_(this);
inflatedRow.onFinishInflate();
dynamicTable.addView(inflatedRow, 0);
}
This is a Major Edit on my previous question
I'm creating a custom (composite) component named OneLineSeeker that consists of a TextView and a SeekBar.
When I have multiple OneLineSeekers declared in a layout, they don't retain their state on configuration change. All seeker thumbs assume the same position (the position of the last OneLineSeeker) on configuration change.
If I don't use the custom component and use only SeekBars individually (uncomment //a() in main activity), they will retain their individual positions on configuration change.
Can anyone help?
src files
A_seekbarsActivity.java
package com.an;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.SeekBar;
public class A_seekbarsActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//a();
}
void a() {
setContentView(R.layout.main_1);
Button b = (Button) findViewById(R.id.button1);
b.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
SeekBar sb = (SeekBar) findViewById(R.id.seekBar1);
if(sb.getProgress() > 50) sb.setProgress(0);
else sb.incrementProgressBy(5);
}
});
}
}
OneLineSeeker.java
package com.an;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;
public class OneLineSeeker extends LinearLayout {
public OneLineSeeker(Context context, AttributeSet attrs) {
super(context, attrs);
View ols = LayoutInflater.from(context).inflate(R.layout.one_line_seeker, this, true);
TypedArray array = context.obtainStyledAttributes(attrs, R.styleable.OneLineSeeker, 0, 0);
String text = array.getString(R.styleable.OneLineSeeker_name);
if (text != null)
((TextView) ols.findViewById(R.id.name)).setText(text);
array.recycle();
}
}
res/layout files
main_1.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"
>
<SeekBar android:id="#+id/seekBar1" android:layout_height="wrap_content" android:layout_width="match_parent"></SeekBar>
<SeekBar android:id="#+id/seekBar2" android:layout_height="wrap_content" android:layout_width="match_parent"></SeekBar>
<SeekBar android:id="#+id/seekBar3" android:layout_height="wrap_content" android:layout_width="match_parent"></SeekBar>
<Button android:text="Button" android:id="#+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>
</LinearLayout>
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:oneLineSeeker="http://schemas.android.com/apk/res/com.an"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<com.an.OneLineSeeker
android:id="#+id/s1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
oneLineSeeker:name="1"
/>
<com.an.OneLineSeeker
android:id="#+id/s2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
oneLineSeeker:name="2"
/>
<com.an.OneLineSeeker
android:id="#+id/s3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
oneLineSeeker:name='3'
/>
</LinearLayout>
one_line_seeker.xml
<?xml version="1.0" encoding="utf-8"?>
<merge
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id='#+id/name'
android:text='name'
/>
<SeekBar
android:id='#+id/seekbar'
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</merge>
res/values files
attrs.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="OneLineSeeker">
<attr name="name" format="string"/>
</declare-styleable>
</resources>
Its not supposed to reset its position to zero. This is actually a feature. When view has id associated with, it usually saves and the restores its state on configuration changes.
If you don't want specific view to save state on configuration change, you can remove android:id from view's entry in layout (but you won't be able to control that view then). Another alternative is to extend ProgressBar and disable its ability to restore state.
The last one option is the easiest one: override onRestoreInstanceState() and reset state there:
#Override
protected void onRestoreInstanceState(Bundle savedInstanceState)
{
super.onRestoreInstanceState(savedInstanceState);
bar.setProgress(0);
}
But I would strongly recommend not resetting view state. After all the whole idea of restoring state on configuration change is to make user think as if nothing really changed. And you need to have very strong reasons to disable this behavior.
In that u have to define Orientation Change Methods.....
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
onCreate(null);
}
Try this Code may u get any Help.....