I'm creating a toolbar that toggles the visibility of buttons when you click a button from a toolbar. So, if the user clicks on the "Draw" button, invisible buttons "Pencil" and Pen" will become visible above the "Draw" button. If you click the "Draw" button again, the buttons "Pencil" and "Pen" will become invisible again.
Within my xml file I have set the visibilty of some buttons to be "invisible" so when I launch the activity they won't be seen. This part is straight forward.
.xml file of btnDrawLine - (Update # 12:21)
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="fill_parent" >
<com.odhranlynch.testSection.UserInterface
android:id="#+id/UserInterface"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentTop="true" />
<Button
android:id="#+id/btnDraw"
android:layout_width="80dip"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:text="Draw" />
<Button
android:id="#+id/btnDrawLine"
android:layout_width="80dip"
android:layout_height="wrap_content"
android:layout_above="#+id/btnDraw"
android:layout_alignParentLeft="true"
android:visibility="visible"
android:text="Line" />
<Button
android:id="#+id/btnDrawCurve"
android:layout_width="80dip"
android:layout_height="wrap_content"
android:layout_above="#+id/btnDrawLine"
android:layout_alignParentLeft="true"
android:visibility="visible"
android:text="Curve" />
<Button
android:id="#+id/btnCutout"
android:layout_width="80dip"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_toRightOf="#+id/btnDraw"
android:text="Cutout" />
<Button
android:id="#+id/btnCutInner"
android:layout_width="80dip"
android:layout_height="wrap_content"
android:layout_above="#+id/btnDraw"
android:layout_toRightOf="#+id/btnDraw"
android:visibility="visible"
android:text="Inner" />
<Button
android:id="#+id/btnCutOutter"
android:layout_width="80dip"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/btnDrawCurve"
android:layout_alignBottom="#+id/btnDrawCurve"
android:layout_toLeftOf="#+id/btnCancel"
android:visibility="visible"
android:text="Outter" />
<Button
android:id="#+id/btnCancel"
android:layout_width="80dip"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_toLeftOf="#+id/btnFinish"
android:text="Cancel" />
<Button
android:id="#+id/btnFinish"
android:layout_width="80dip"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:text="Finish" />
</RelativeLayout>
Next, when the user clicks a button that is visible, I'd like the invisible buttons to appear.
Here's the thing, they won't reappear!lol I'm confused by it.
I would be very grateful if someone would be kind enough to shed so light onto this for me :)
testActivity.java
package com.odhranlynch.testSection;
import com.odhranlynch.testSection.R;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
public class testActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.new_product);
// Find buttons and give them a name.
final View btnDraw = findViewById(R.id.btnDraw);
final View btnCutOut = findViewById(R.id.btnCutout);
final View btnDrawLine = findViewById(R.id.btnDrawLine);
final View btnDrawCurve = findViewById(R.id.btnDrawCurve);
final View btnCutInner = findViewById(R.id.btnCutInner);
final View btnCutOutter = findViewById(R.id.btnCutOutter);
//Draw Button clicked (UI Toolbar).
btnDraw.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
//Treat button as a toggle button
//So if a sub-button (e.g. Draw Line) is visible, then we know the button has
//been toggled to visible so lets now make it invisible.
if (btnDrawLine.getVisibility()== View.VISIBLE) {
//Its visible.
btnDrawLine.setVisibility(View.INVISIBLE);
btnDrawCurve.setVisibility(View.INVISIBLE);
Log.d("TAG", "INVISIBLE");
} else {
// Either gone or invisible
btnDrawLine.setVisibility(View.VISIBLE);
btnDrawCurve.setVisibility(View.VISIBLE);
Log.d("TAG", "VISIBLE");
}
}
});
}
}
As a further point to mention, if I set the visibilty of the buttons to be visible within the .xml file I can toggle the visibilty perfectly fine during runtime!
Again, I would be grateful of some help :)
Try replacing View.INVISIBLE to View.GONE.
Your code is working fine..
The XML file
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/hello" />
<Button
android:id="#+id/btnDrawLine"
android:layout_width="80dip"
android:layout_height="wrap_content"
android:layout_above="#+id/btnDraw"
android:layout_alignParentLeft="true"
android:visibility="invisible"
android:text="Line" />
<Button
android:id="#+id/draw"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="draw" />
</LinearLayout>
The activity
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
public class DrawCanvasActivity extends Activity {
private static final String Number1 = "9686801147";
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final View btnDrawLine = findViewById(R.id.btnDrawLine);
Button btnDraw = (Button) findViewById(R.id.draw);
btnDraw.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
if (btnDrawLine.getVisibility()== View.VISIBLE) {
btnDrawLine.setVisibility(View.INVISIBLE);
Log.d("TAG", "INVISIBLE");
} else {
btnDrawLine.setVisibility(View.VISIBLE);
Log.d("TAG", "VISIBLE");
}
}
});
}
}
The button line appears when the draw button is clicked.Guess there may be problem in the view formatting in your code.
If you want ot use gone/visible, just add a LinearLayout around your buttons, which you want to hide. LinearLayout will have a layout_width=wrap_content; and you referer position of other element to this Layout.
After you free to change visibility to gone/visible of your buttons.
Related
I am just trying to reset background color of radio button. Already i have set color for radio button and its text along with background perfectly.Later to reset text color of radio button i have used ColorStateList , which worked perfectly for text-color only but did not work for background resetting.
Can anyone please suggest me how to reset background color of radio button? is there any other method like **COlorStateList ** to reset background ?
Thanks in advance.
also i have attached my code below:
package com.hfad.rdiobuttontest;
import android.content.res.ColorStateList;
import android.graphics.Color;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
RadioButton radioButton1,radioButton2,radioButton3;
RadioGroup radioGroup;
TextView question;
Button button, button2;
private ColorStateList defaulttextcolor;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
radioButton1=findViewById(R.id.radio_button1);
radioButton2=findViewById(R.id.radio_button2);
radioButton3=findViewById(R.id.radio_button3);
radioGroup=findViewById(R.id.radio_group);
question=findViewById(R.id.question);
button=findViewById(R.id.test);
button2=findViewById(R.id.reset);
defaulttextcolor=radioButton1.getTextColors();
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
radiobuttoncolor ();
}
});
button2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
radioButton1.setTextColor(defaulttextcolor);
radioButton2.setTextColor(defaulttextcolor);
radioButton3.setTextColor(defaulttextcolor);
radioGroup.clearCheck();
question.setText("result- background still same");
radioButton1.setText("my backgroud color did not changed,/n can you please help me to cahnge it?");
radioButton2.setText("textcolr has been reset");
radioButton3.setText("opps, 1 - ur backgroud is still blue");
}
});
}
public void radiobuttoncolor (){
radioButton1.setTextColor(defaulttextcolor);
radioButton2.setTextColor(defaulttextcolor);
radioButton3.setTextColor(defaulttextcolor);
radioGroup.clearCheck();
question.setText("please click on color reset button");
radioButton1.setText("My backgroud color is blue");
radioButton1.setTextColor(Color.GREEN);
radioButton1.setBackgroundColor(Color.BLUE);
radioButton2.setText("I am green");
radioButton2.setTextColor(Color.GREEN);
radioButton3.setText("1) backgroud blue, \n2) text green \n3)i am default ");
}
}
and not the layout
<?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:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorPrimary"
android:padding="16dp"
tools:context="com.hfad.rdiobuttontest.MainActivity">
<TextView
android:id="#+id/question"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#id/radio_group"
android:layout_marginBottom="16dp"
android:freezesText="true"
android:text="please click on color test button"
android:textAlignment="center"
android:textColor="#android:color/black"
android:textSize="20sp" />
<RadioGroup
android:id="#+id/radio_group"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
>
<RadioButton
android:id="#+id/radio_button1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:freezesText="true"
android:text="Option 1"
android:padding="6dp"
android:layout_marginTop="10dp"
/>
<RadioButton
android:id="#+id/radio_button2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:checked="false"
android:freezesText="true"
android:layout_marginTop="5dp"
android:layout_marginBottom="5dp"
android:layoutDirection="ltr"
android:padding="6dp"
android:text="Option 2"
android:textColor="#color/colorAccent"
/>
<RadioButton
android:id="#+id/radio_button3"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:freezesText="true"
android:text="Option 3"
android:padding="6dp"/>
</RadioGroup>
<Button
android:id="#+id/test"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/radio_group"
android:layout_centerHorizontal="true"
android:layout_marginTop="91dp"
android:freezesText="true"
android:text="colortest" />
<Button
android:id="#+id/reset"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/radio_group"
android:layout_centerHorizontal="true"
android:layout_marginTop="140dp"
android:freezesText="true"
android:text="Color reset" />
There are two ways in which you can achieve this,
To reset the color you can either use the transparent color or use the default color of the Radio Button. So inside your click listener try this -
radioButton1.setBackgroundColor(android.R.drawable.btn_radio);
or alternatively,
radioButton1.setBackgroundColor(0x00000000);
Iam Developing an android app in which one of its module is of Quiz.I want to show Tick image on button when someone click the right answer and wrong when wrong ans is seleceted, I want to show these tick and cross images on the right most of my button.Right now Iam displaying the toast for right and wrong answer.Also I want to show the next quiz question on the same activity when user click the next or previous button.I dont want to create another activity for next question rather want to show the next question on the same activity.
the sample image like what I want to do is like this :
enter image description here
Code of Quiz xml is :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:orientation="vertical"
android:background="#drawable/empty"
tools:context=".activity.QuizActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/_10sdp"
android:orientation="vertical">
<TextView
android:id="#+id/quiz_question"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Quiz"
android:textStyle="bold"
android:textSize="#dimen/_30ssp"
android:textColor="#FFF"
android:gravity="center_horizontal"/>
<TextView
android:layout_below = "#id/quiz_question"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Which was the first non test playing country to beat India in an international match?"
android:textSize="20sp"
android:textStyle="bold"
android:layout_marginLeft="20dp"
android:layout_marginRight="15dp"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:orientation="vertical">
<Button
android:id="#+id/afghan"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text=" Afghanistan"
android:textStyle="bold"
android:textColor="#fff"
android:gravity="left|center_vertical"
android:textAllCaps="false"
android:textSize="15sp"
android:background="#drawable/button_border"/>
<Button
android:layout_below = "#id/afghan"
android:id="#+id/bang"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text=" Bangladesh"
android:textStyle="bold"
android:textColor="#fff"
android:gravity="left|center_vertical"
android:textAllCaps="false"
android:textSize="15sp"></Button>
<Button
android:id="#+id/srilanka"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text=" Srilanka"
android:textStyle="bold"
android:textColor="#fff"
android:gravity="left|center_vertical"
android:textAllCaps="false"
android:textSize="15sp"
android:background="#drawable/button_border"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="#dimen/_50sdp"
android:layout_height="#dimen/_50sdp"
android:background="#drawable/left_arrow"
android:layout_gravity="bottom"
android:layout_margin="#dimen/_20sdp"/>
<ImageView
android:layout_width="#dimen/_50sdp"
android:layout_height="#dimen/_50sdp"
android:background="#drawable/right_arrow"
android:layout_gravity="bottom"
android:layout_marginBottom="#dimen/_20sdp"
android:layout_marginLeft="#dimen/_150sdp"/>
</LinearLayout>
</LinearLayout>
Code for Activity is :
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import com.vshine.neuron.riseshine.R;
public class QuizActivity extends AppCompatActivity {
Button btn1, btn2, btn3;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_quiz);
btn1 = findViewById(R.id.afghan);
btn2 = findViewById(R.id.bang);
btn3 = findViewById(R.id.srilanka);
btn1.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getApplicationContext(),"Sorry! Wrong Answer",Toast.LENGTH_LONG).show();
}
});
btn2.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getApplicationContext(),"Sorry! Wrong Answer",Toast.LENGTH_LONG).show();
}
});
btn3.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getApplicationContext(),"Congratulation! Right Answer",Toast.LENGTH_LONG).show();
}
});
getSupportActionBar().setTitle("Quiz");
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// handle arrow click here
if (item.getItemId() == android.R.id.home) {
finish(); // close this activity and return to preview activity (if there is any)
}
return super.onOptionsItemSelected(item);
}
}
I'd suggest you do couple of things.
Instead of hardcodding your buttons' onclick methods, try determining which button was clicked and was it the write answer or not.
You can make a method which will check if the clicked button holds the right answer or not.
For reusing the activity, you can simply update the textview (that holds the question) and the button's texts.
I have a horizontal linear layout that has 3 views. An open and close button and a text view. On load the close button is set to
setVisibility(View.GONE);
So it is only showing one imageview, open, and a textview with some text. I am also using
android:animateLayoutChanges="true"
On my parent layout to animate the textview when it opens and closes. Everything functions right except when I open/close I can see the animation for the two buttons being set to GONE and VISIBLE respectively. I do not want animation on those two ImageViews. Any thoughts on how I can remove the animations on those two views? Thanks in advance.
XML File
<?xml version="1.0" encoding="utf-8"?>
<ScrollView
android:id="#+id/CuFScrollView"
style="#style/ScrollView"
xmlns:android="http://schemas.android.com/apk/res/android"
android:background="#A0A0A0"
>
<LinearLayout
style="#style/LinearLayoutVertical"
android:paddingTop="20dp"
>
<TextView
android:text="Basic Management Plan for Tactical Field Care"
android:id="#+id/header"
style="#style/Header"
/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#606060"
android:padding="5dp"
android:animateLayoutChanges="true"
>
<ImageView
android:id="#+id/open"
android:src="#drawable/open"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:onClick="open"
android:layout_gravity="center_vertical"
android:animateLayoutChanges="false"
/>
<ImageView
android:id="#+id/close"
android:src="#drawable/close"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:onClick="close"
android:layout_gravity="center_vertical"
android:animateLayoutChanges="false"
/>
<TextView
android:id="#+id/stepOne"
android:text="Step 1:"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingLeft="0dp"
style="#style/Bullet"
/>
</LinearLayout>
</LinearLayout>
Java File
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ImageView;
import android.widget.ScrollView;
import android.widget.TextView;
public class Careunderfirestudy extends AppCompatActivity{
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getSupportActionBar().hide();
setContentView(R.layout.careunderfirestudy);
ImageView close = (ImageView)findViewById(R.id.close);
close.setVisibility(View.GONE);
}
public void open(View view){
TextView stepOne = (TextView)findViewById(R.id.stepOne);
stepOne.setText("Casualties should be extricated from burning vehicles or buildings and moved to places of relative safety. Do what is necessary to stop the burning process.");
ImageView close = (ImageView)findViewById(R.id.close);
ImageView open = (ImageView)findViewById(R.id.open);
close.setVisibility(View.VISIBLE);
open.setVisibility(View.GONE);
}
public void close(View view){
TextView stepOne = (TextView)findViewById(R.id.stepOne);
stepOne.setText("Step 1:");
ImageView close = (ImageView)findViewById(R.id.close);
ImageView open = (ImageView)findViewById(R.id.open);
close.setVisibility(View.GONE);
open.setVisibility(View.VISIBLE);
}
}
The question was: Prevent certain views from being animated with android:animateLayoutChanges=“true” and I don't see the answer to this question in the previous answer.
I had the same problem and I solved it disabling temporary the LayoutTransition for appearing and disappearing type.
Here examples.
Hide a View without animating it:
LayoutTransition lt = ((ViewGroup)view.getParent()).getLayoutTransition();
lt.disableTransitionType( LayoutTransition.DISAPPEARING );
view.setVisibility(View.GONE);
lt.enableTransitionType( LayoutTransition.DISAPPEARING );
Show a View without animating it:
LayoutTransition lt = ((ViewGroup)view.getParent()).getLayoutTransition();
lt.disableTransitionType( LayoutTransition.APPEARING );
view.setVisibility(View.VISIBLE);
lt.enableTransitionType( LayoutTransition.APPEARING );
This does not prevent other views to be animated consequently to the view visibility change (they are animated under LayoutTransition.CHANGE_APPEARING and LayoutTransition.CHANGE_DISAPPEARING transition type).
Not null check to LayoutTransition may be done for safety.
You could just use 1 button and change the image:
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#606060"
android:padding="5dp"
android:animateLayoutChanges="true"
android:id="#+id/parent"
>
<ImageView
android:id="#+id/toggleStep"
android:src="#drawable/open"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="5dp"
android:onClick="toggle"
android:layout_gravity="center_vertical"
/>
protected void onCreate(Bundle savedInstanceState) {
...
LinearLayout parent = (LinearLayout) findViewById(R.id.parent);
parent.getLayoutTransition().enableTransitionType(LayoutTransition.CHANGING);
...
}
private boolean mOpen = false;
public void toggle(View view){
TextView stepOne = (TextView)findViewById(R.id.stepOne);
ImageView toggle = (ImageView)findViewById(R.id.toggleStep);
if(mOpen){
stepOne.setText("Step 1:");
toggle.setImageResource(R.drawable.open);
}
else{
stepOne.setText("Casualties should be extricated from burning vehicles or buildings and moved to places of relative safety. Do what is necessary to stop the burning process.");
toggle.setImageResource(R.drawable.close);
}
mOpen = !mOpen;
}
i am developing an app, and this is the code. I have two questions.
mainactivity.java
package com.shashank.sharjahinternationalairport;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageButton;
public class MainActivity extends Activity {
ImageButton flightInfoButton;
ImageButton airportGuideButton;
ImageButton visitorInfoButton;
ImageButton saaDcaButton;
ImageButton cargoButton;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
flightInfoButton = (ImageButton) findViewById(R.id.flightInfo);
airportGuideButton = (ImageButton) findViewById(R.id.airportGuide);
visitorInfoButton = (ImageButton) findViewById(R.id.visitorInfo);
saaDcaButton = (ImageButton) findViewById(R.id.saaDca);
cargoButton = (ImageButton) findViewById(R.id.cargo);
airportGuideButton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View V){
setContentView(R.layout.airport_guide);
}
});
visitorInfoButton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View V){
setContentView(R.layout.visitor_info);
}
});
saaDcaButton.setOnClickListener(new OnClickListener(){
#Override
public void onClick(View V){
setContentView(R.layout.saa_dca);
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
so this is the java code. here after it goes into either airport_guide or saa_dca or visitor_info, if I press the back button , the app just closes instead of going back to the main menu. is this something to do with the activity life cycle and should i include something there? and if so please tell how. I am new to android development.
this is the saa_dca.xml code
<?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="vertical" >
<ImageButton
android:id="#+id/corporateProfile"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
<ImageButton
android:id="#+id/infoForAirline"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
<ImageButton
android:id="#+id/businessPolicy"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
<ImageButton
android:id="#+id/saftyAndSecurity"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
<ImageButton
android:id="#+id/trafficRights"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
<ImageButton
android:id="#+id/securityPasses"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
<ImageButton
android:id="#+id/photography"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
<ImageButton
android:id="#+id/mediaCentre"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
<ImageButton
android:id="#+id/customerRelations"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
<ImageButton
android:id="#+id/contactUs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="#drawable/ic_launcher" />
</LinearLayout>
as you can see, there are ten image buttons here, but when this opens after clicking on the according button, all the buttons won't fit in the screen, I thought android provides scroll up and down by default if the buttons exceed the screen but apparently it is not the case. so how do i include the swipe function for this to scroll up and down? and where should i include it? if you want the other xml codes, please ask .I will put them as well.
Thank you in advance.
not sure, but here is my assumption , you can override onBackPressed()
#Override
public void onBackPressed() {
}
this one
You can keep track of which button are currently pressed. And when you click on back button, you know the tracked position, say its 5th position, just focus the button which is in the 4rth position.
If your menu is in a fragment you can add it to the back stack.
BackStack
Then when you press back it will go back to the previous menu before exiting (on another back button press)
i want to have a set of buttons and the focus on buttons should change periodically first i want to try it with 2 buttons.this is my main.xml file.
<?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:orientation="vertical" >
<Button
android:id="#+id/number_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="0.72"
android:focusable="true"
android:gravity="center"
android:text="#string/number"
android:textSize="10pt" android:clickable="true"
android:focusableInTouchMode="true"/>
<Button
android:text="#string/contact"
android:textSize="10pt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/contact_button"
android:layout_weight="1" android:layout_gravity="center"
android:focusable="true" android:gravity="center"
android:focusableInTouchMode="true"/>
</LinearLayout>
in the source code i have used FOCUS_LEFT,RIGHT and all other options ,but i am getting a run time exception. the orientation is set as vertical in linear layout.Please help me to sort out this problem, if anybody know how to set the timer option as well post it here
here is the code
package com.example.helloandroid;
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
public class HelloandroidActivity extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Object o=null;
// o.toString();
// TextView tv = new TextView(this);
// tv.setText("Hello Andriod");
setContentView(R.layout.main);
Button mybtn= (Button)findViewById(R.id.number_button);
mybtn.requestFocus();
try
{
Button mybtn2= (Button)mybtn.focusSearch(View.FOCUS_DOWN);
mybtn2.requestFocus();
}
catch(Exception e)
{
Log.e("focus change","focus failed",e);
}
}
}
The problem is that you is finding a control in mybtn. Inside your activity you should call focusSearch in Activity context. Try this:
Button mybtn2 = (Button) focusSearch(View.FOCUS_DOWN);
if (mybtn2 != null)
mybtn2.requestFocus();