Android POCs (Proof of Concepts)

TabBarSelect-ActivityShow

Select a tab and see the related Activity. Layout file tab.xml contains the required TabHost TabWidget and FrameLayout elements. A TabHost object is created from the tab.xml element, "@android:id/tabhost". A new TabSpec object is created from the factory method newTabSpec(..) of the TabHost object. The indicator sets the tab name and icon. Two Intents are created for a basic Activity and an Activity defined as a layout. Activity2 is from this library at ButtonPress-LabelShow.

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TabBarSelect-ActivityShow/src/com/brainyideas/dev/tba/TabBarApp.java
package com.brainyideas.dev.tba;

import android.app.TabActivity;
import android.content.Intent;
import android.content.res.Resources;
import android.os.Bundle;
import android.widget.TabHost;
import android.widget.TabHost.TabSpec;


public class TabBarApp extends TabActivity {
	
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
    	
        super.onCreate(savedInstanceState);
        
        setContentView(R.layout.tab);
        
        Resources res = getResources();

        TabHost tabHost = (TabHost) findViewById(android.R.id.tabhost);
        
        Intent intent1 = new Intent(this,ActivityOne.class);
        TabSpec tabSpec1 = tabHost.newTabSpec("tab1");
        tabSpec1.setIndicator("Tab One",res.getDrawable(R.drawable.tab1_icons));
        tabSpec1.setContent(intent1);
        tabHost.addTab(tabSpec1);
        
        Intent intent2 = new Intent(this,ActivityTwo.class);
        TabSpec tabSpec2 = tabHost.newTabSpec("tab2");
        tabSpec2.setIndicator("Tab Two",res.getDrawable(R.drawable.tab2_icons));
        tabSpec2.setContent(intent2);
        tabHost.addTab(tabSpec2);
    }
}

TabBarSelect-ActivityShow/src/com/brainyideas/dev/tba/ActivityOne.java
package com.brainyideas.dev.tba;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;


public class ActivityOne extends Activity {
	
	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		
		super.onCreate(savedInstanceState);

		TextView textView = new TextView(this);
		textView.setText("Activity One");
		setContentView(textView);
	}
}

TabBarSelect-ActivityShow/src/com/brainyideas/dev/tba/ActivityTwo.java
package com.brainyideas.dev.tba;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;

public class ActivityTwo extends Activity {
	
    Button button1;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        
    	super.onCreate(savedInstanceState);
        setContentView(R.layout.act2);
        
        init();
    }
    
    void init() {
    	
        button1 = (Button) findViewById(R.id.button1);
        button1.setOnClickListener(new OnClickListener() {

            public void onClick(final View v) {
                labelShow();
            }
        });
    }
    
    void labelShow() {
    	
    	TextView log = (TextView) findViewById(R.id.textView1);
    	log.setText("Present at 11:31am");
    }
}

TabBarSelect-ActivityShow/res/drawable/tab1_icons.xml
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- When selected, use grey -->
    <item android:drawable="@drawable/tab1_selected"
          android:state_selected="true" />
    <!-- When not selected, use white-->
    <item android:drawable="@drawable/tab1_normal" />
</selector>

TabBarSelect-ActivityShow/res/layout/tab.xml
<?xml version="1.0" encoding="utf-8"?>

<TabHost 
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:id="@android:id/tabhost"
	android:layout_width="fill_parent"
	android:layout_height="fill_parent"> 
	<LinearLayout 
		android:id="@+id/LinearLayout01"
		android:layout_width="fill_parent"
		android:layout_height="fill_parent"
		android:orientation="vertical"> 
		<TabWidget 
			android:id="@android:id/tabs"
			android:layout_width="fill_parent"
			android:layout_height="wrap_content"/> 
		<FrameLayout 
			android:id="@android:id/tabcontent"
			android:layout_width="fill_parent"
			android:layout_height="fill_parent"/> 
	</LinearLayout>

</TabHost>

TabBarSelect-ActivityShow/res/layout/act2.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:text="@string/startvalue" android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content"></TextView>
	<Button android:text="Button" android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>

</LinearLayout>