Develop Reference

How to show menu item in android application on click

I have to make a list menu item in android that contains three menu items in a list view i want to show some content on click of each menu.Here is a screen of which i have done so far..
This is the menu i have created .i want that i will click on Menu1 and the Menu1 will show in a page..i am posting my code..
public class MainActivity extends ListActivity {
String[] menus={"Menu1","Menu2","Menu3"};
#Override
protected void onListItemClick(ListView l,View v,int position,long id){
super.onListItemClick(l,v,position,id);
String name=menus[position];
try{
Class main=Class.forName("com.betacoading.createlistmenu.app"+name);
Intent intent=new Intent(MainActivity.this,main);
startActivity(intent);
}catch(ClassNotFoundException e){
e.printStackTrace();
}
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// setContentView(R.layout.activity_main);
setListAdapter(new ArrayAdapter<String>(MainActivity.this,android.R.layout.simple_expandable_list_item_1,menus));
}
#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;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
public class Menu_1 extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.menu_1);
Button back=(Button)findViewById(R.id.button);
back.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent in=new Intent(getApplicationContext(),MainActivity.class);
startActivity(in);
}
});
}
}
public class Menu_2 extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.menu_2);
Button back=(Button)findViewById(R.id.button);
back.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent in=new Intent(getApplicationContext(),MainActivity.class);
startActivity(in);
}
});
}
}
public class Menu_3 extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.menu_3);
Button back=(Button)findViewById(R.id.button);
back.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent in=new Intent(getApplicationContext(),MainActivity.class);
startActivity(in);
}
});
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.betacoading.createlistmenu.app" >
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.betacoading.createlistmenu.app.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".Menu_1"
android:label="#string/app_name" >
<intent-filter>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".Menu_2"
android:label="#string/app_name" >
<intent-filter>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".Menu_3"
android:label="#string/app_name" >
<intent-filter>
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
Menu_1.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="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Menu 1"
android:textSize="24dp"
android:layout_gravity="center_horizontal"
/>
<Button
android:id="#+id/button"
android:layout_width="200dp"
android:layout_height="400dp"
android:text="Back"
android:textSize="16dp"
/>
</LinearLayout>
Menu2.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="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Menu 2"
android:textSize="24dp"
android:layout_gravity="center_horizontal"
/>
<Button
android:id="#+id/button"
android:layout_width="200dp"
android:layout_height="400dp"
android:text="Back"
android:textSize="16dp"
/>
</LinearLayout>
menu3.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="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Menu 3"
android:textSize="24dp"
android:layout_gravity="center_horizontal"
/>
<Button
android:id="#+id/button"
android:layout_width="200dp"
android:layout_height="400dp"
android:text="Back"
android:textSize="16dp"
/>
This is my code i have tried so far..please help me to make it dynamic

Try this link
http://www.androidviews.net/2013/04/sliding-layer/
This will help you to make sliding menu from bottom, left, right, and top with lots of animation.
You can put anything inside it and easily work on it in you java class.
Hope it will help.

android app one page to another page not working

Here I done code for 5 buttons like Aboutus,development,carriers,services,contactus.
Here I clicked about us button that shows errors as unfortunately app closed.
Here is my code :
MainActivity.java
public class MainActivity extends Activity {
Button aboutus,development,service,carriers,contactus;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button aboutus=(Button) findViewById(R.id.aboutus);
aboutus.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(v.getContext(),aboutus.class);
startActivity(i);
}
});
}
#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;
}
}
activity_main.xml
<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"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<Button
android:id="#+id/aboutus"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="About us"
/>
<Button
android:id="#+id/services"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Services"
/>
<Button
android:id="#+id/development"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Development"
/>
<Button
android:id="#+id/carriers"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Carriers"
/>
<Button
android:id="#+id/contactus"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Contact Us"
/>
</LinearLayout>
</RelativeLayout>
aboutus.java
public class aboutus extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.aboutus);
}
}
aboutus.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="vertical" >
<TextView android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:text="Aboutus Page"/>
</LinearLayout>
AndroidManifest.xml is this correct ?
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.globalinfosoft"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.globalinfosoft.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<Activity android:name= "aboutus"/>
</application>
</manifest>

MainActivity.java
package com.example.a;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.View;
import android.widget.Button;
public class MainActivity extends Activity {
Button aboutus, development, service, carriers, contactus;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button aboutus = (Button) findViewById(R.id.aboutus);
aboutus.setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
//Starting a new Intent
Intent nextScreen = new Intent(getApplicationContext(),aboutus.class);
startActivity(nextScreen);
}
});
}
}
Here is Androidmanifest.xml :
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.a"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.a.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.a.aboutus"></activity>
</application>
</manifest>

Instead of v.getContext() use 'getApplicationContext()'.
Intent i = new Intent(getApplicationContext(),aboutus.class);
startActivity(i);

Try this ..
Button aboutus=(Button) findViewById(R.id.aboutus);
aboutus.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(getApplicationContext(),aboutus.class);
startActivity(i);
}
});

First, you should make sure that you have declared the aboutus acitivity in your AndroidManifest.xml file.
<Activity android:name= "aboutus"/>
Second, you can use
Intent i = new Intent(getApplicationContext(),aboutus.class);
or
Intent i = new Intent(MainActivity.this,aboutus.class);
instead of
Intent i = new Intent(v.getContext(),aboutus.class);

Intent i = new Intent(v.getContext(),aboutus.class);
startActivity(i);
instead of code use following code and instruction:
Intent i = new Intent(MainActivity.this,aboutus.class);
startActivity(i);
you have to declare the About us activity on AndroidManifest.xml like this
<Activity android:name= ".aboutus"/>

Android button not responding to click event/

As far as I can tell, everything needed for a button to respond is in place. Im baffled so would appreciate a pair of extra eyes on this.
Simple homepage activity, login or create a profile buttons displayed. Click the login button and the next activity should display. Application runs on device but buttons do not respond.
Code
public class HomeActivity extends Activity implements OnClickListener {
Button login;
Button createProfile;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
login = (Button) findViewById(R.id.loginButton);
login.setOnClickListener(this);
createProfile = (Button) findViewById(R.id.createProfileButton);
createProfile.setOnClickListener(this);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.home, menu);
return true;
}
#Override
public void onClick(View view) {
Intent intent;
switch(view.getId()){
case R.id.loginButton: /** Start a new Activity LoginActivity.java */
intent = new Intent(this, LoginActivity.class);
this.startActivity(intent);
break;
case R.id.createProfileButton: /** Start a new Activity About.java */
//intent = new Intent(this, AboutActivity.class);
//this.startActivity(intent);
break;
}
}
}
HomeScreen layout
<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"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".HomeActivity" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/hello_world" />
<Button
android:id="#+id/loginButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="160dp"
android:layout_marginRight="51dp"
android:text="Login" />
<Button
android:id="#+id/createProfileButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/loginButton"
android:layout_alignBottom="#+id/loginButton"
android:layout_toLeftOf="#+id/loginButton"
android:text="createProfile" />
Login Layout
<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"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".HomeActivity" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="This is the login page!" />
Manifest
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.nutrtionintuition"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="com.example.nutrtionintuition.HomeActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".LoginActivity"
android:label="#string/app_name" >
</activity>
</application>
LoginACtivity
public class LoginActivity extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.home, menu);
return true;
}
}

In both classes (HomeActivity and LoginActivity), you set the content view like this:
setContentView(R.layout.activity_home);
Your code is working, but the new activity is loading the same layout.
Change
setContentView(R.layout.activity_home);
to
setContentView(R.layout.activity_login);
(or whatever your login layout is named) in your LoginActivity class.

Your code is OK and it must work. It seems that your activites are not included in your AndroidManifest.xml.
If so, maybe you are actually launching your another activity, but you may have missed to put the right layout id in the setContentView function.

Android fragments setRetainInstance(true) not works (Android support library)

I have a problem with saving fragment state. I try to use setRetainInstance, but cant make it work((( I change a state to 2 using button1, but after changing screen orientation i see 1 when pressing on button2. Where is my mistake?
public class TestFragment extends Fragment {
#Override
public void onCreate(Bundle savedInstanceState) {
setRetainInstance(true);
super.onCreate(savedInstanceState);
}
private String state = "1";
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_layout, container, false);
//button for changing state
((Button)view.findViewById(R.id.button1)).setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
state = "2";
}
});
//button for showing state
((Button)view.findViewById(R.id.button2)).setOnClickListener(new View.OnClickListener() {
public void onClick(View arg0) {
Toast.makeText(getActivity(), state, Toast.LENGTH_SHORT).show();
}
});
return view;
}
}
EDIT
Activity:
public class MainActivity extends FragmentActivity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
}
Activity layout:
<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" >
<fragment
android:name="ru.ee.TestFragment"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
</RelativeLayout>
Fragment layout:
<?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" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Change to 2" />
<Button
android:id="#+id/button2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Show" />
</LinearLayout>
Manifest XML:
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="ru.ee.testfrag"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="15" />
<application
android:icon="#drawable/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme" >
<activity
android:name="ru.ee.MainActivity"
android:label="#string/title_activity_main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

Your fragment will only get re-used if you give the fragment an Id in the layout, change
<fragment
android:name="ru.ee.TestFragment"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
to be
<fragment
android:id="#+id/a_fragment"
android:name="ru.ee.TestFragment"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>

There isn't anything wrong with the code you posted. If you have the fragment implemented correctly, it should be giving you a state of 2. Maybe you could post your activity and xml files. There error must be somewhere else.

New Intent doesn't open on button click

Blockquote
I try to change the display by simply clicking the button. I guess I should use Intent for doing this but no any effect, please help me :(
here is my code:
FYP.JAVA
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final Button ProfileTemplate = (Button)findViewById(R.id.ProfileTemplate);
ProfileTemplate.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent mIntent = new Intent(FYP.this, ProfileTemplate.class);
startActivity(mIntent);
finish();
}
});
public class ProfileTemplate extends Activity {
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.profiletemplate);
}
}

Below is complete project with 2 Activities. One has button, when you click it, it starts the other Activity.
More on Buttons and Clicking.
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">
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content" android:text="Hello, sup son!" />
<Button android:id="#+id/btnButton" android:layout_height="wrap_content"
android:layout_width="fill_parent" android:layout_gravity="left"
android:onClick="changeActivity" android:text="changeActivity" />
</LinearLayout>
main2.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">
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content" android:text="New Activity Started" />
</LinearLayout>
class Hello.java
public class Hello extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
//default button handler
public void changeActivity(View view) {
startActivity(new Intent(this, NewActivity.class));
}
}
class NewActivity.java
public class NewActivity extends Activity {
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main2);
}
}
Manifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.stackoverflow.example"
android:versionCode="1"
android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />
<application android:icon="#drawable/icon" android:label="New App Name">
<activity android:name=".Hello"
android:label="New App Name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".NewActivity" android:label="New App Name"></activity>
</application>
</manifest>