Change TextView color when SeekBar passes through value

Question 1

you should probably change == to >=

updated answer:

in the xml, you have android:max="120", make it android:max="190"

Question 2

In the above code you have used else if so what happens is that when the first if or any of the else if becomes true then rest of the else if below that are not evaluated.Hence you get the same color. Try using if in all the conditional statements and you will get the desired result.I tested it :)

EDIT: Adding codes to make it more clear

MainActivity.java

package com.abc.def;

import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Color;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.RelativeLayout;
import android.widget.SeekBar;
import android.widget.TextView;

public class MainActivity extends Activity implements
    SeekBar.OnSeekBarChangeListener {

SeekBar sb;
TextView tv1, tv2, tv3, tv4, tv5;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    sb = (SeekBar) findViewById(R.id.seekBar1);
    sb.setOnSeekBarChangeListener(this);

    tv1 = (TextView) findViewById(R.id.textView1);
    tv2 = (TextView) findViewById(R.id.textView2);
    tv3 = (TextView) findViewById(R.id.textView3);
    tv4 = (TextView) findViewById(R.id.textView4);
    tv5 = (TextView) findViewById(R.id.textView5);
}

@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;
}

public boolean onOptionsItemSelected(MenuItem item) {
    int id = item.getItemId();

    switch (id) {
    case R.id.action_settings:
        AlertDialog.Builder alertbox = new AlertDialog.Builder(this);

        // set the message to display
        alertbox.setMessage("Wanna go to www.moma.org for more info?");

        // add a neutral button to the alert box and assign a click listener
        alertbox.setNegativeButton("NOPE!!",
                new DialogInterface.OnClickListener() {

                    // click listener on the alert box
                    public void onClick(DialogInterface arg0, int arg1) {
                        // the button was clicked

                    }
                });

        alertbox.setPositiveButton("YEAH!!",
                new DialogInterface.OnClickListener() {

                    // click listener on the alert box
                    public void onClick(DialogInterface arg0, int arg1) {
                        // the button was clicked
                        String url = "http://www.moma.org";

                        Intent intent = new Intent(Intent.ACTION_VIEW);
                        intent.setData(Uri.parse(url));
                        startActivity(intent);

                    }
                });

        // show it
        alertbox.show();
    }
    return true;
}

@Override
public void onProgressChanged(SeekBar seekBar, int progress,
        boolean fromTouch) {
    // TODO Auto-generated method stub

    switch (seekBar.getId()) {
    case R.id.seekBar1:
        // tvOne.setText(String.valueOf(progress));
        if (progress >= 10) {
            tv1.setBackgroundColor(Color.parseColor("#00996a"));
            tv2.setBackgroundColor(Color.WHITE);
            tv3.setBackgroundColor(Color.WHITE);
            tv4.setBackgroundColor(Color.WHITE);
            tv5.setBackgroundColor(Color.WHITE);

        }if (progress >= 20) {
            tv1.setBackgroundColor(Color.WHITE);
            tv2.setBackgroundColor(Color.parseColor("#00996a"));
            tv3.setBackgroundColor(Color.WHITE);
            tv4.setBackgroundColor(Color.WHITE);
            tv5.setBackgroundColor(Color.WHITE);

        }if (progress >= 40) {
            tv1.setBackgroundColor(Color.WHITE);
            tv2.setBackgroundColor(Color.WHITE);
            tv3.setBackgroundColor(Color.parseColor("#00996a"));
            tv4.setBackgroundColor(Color.WHITE);
            tv5.setBackgroundColor(Color.WHITE);

        }if (progress >= 60) {
            tv1.setBackgroundColor(Color.WHITE);
            tv2.setBackgroundColor(Color.WHITE);
            tv3.setBackgroundColor(Color.WHITE);
            tv4.setBackgroundColor(Color.parseColor("#00996a"));
            tv5.setBackgroundColor(Color.WHITE);

        }if (progress >= 70) {
            tv1.setBackgroundColor(Color.WHITE);
            tv2.setBackgroundColor(Color.WHITE);
            tv3.setBackgroundColor(Color.WHITE);
            tv4.setBackgroundColor(Color.WHITE);
            tv5.setBackgroundColor(Color.parseColor("#00996a"));

        }if (progress >= 80) {
            tv1.setBackgroundColor(Color.WHITE);
            tv2.setBackgroundColor(Color.WHITE);
            tv3.setBackgroundColor(Color.WHITE);
            tv4.setBackgroundColor(Color.WHITE);

            tv5.setBackgroundColor(Color.parseColor("#00996a"));

        }if (progress >= 100) {
            tv1.setBackgroundColor(Color.WHITE);
            tv2.setBackgroundColor(Color.WHITE);
            tv3.setBackgroundColor(Color.WHITE);
            tv4.setBackgroundColor(Color.WHITE);
            tv5.setBackgroundColor(Color.WHITE);

        }

        break;
    default:
        break;
    }

}

@Override
public void onStartTrackingTouch(SeekBar arg0) {
    // TODO Auto-generated method stub

}

@Override
public void onStopTrackingTouch(SeekBar arg0) {
    // TODO Auto-generated method stub

}

}

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/verti"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/beach1"
android:baselineAligned="false"
android:orientation="horizontal"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:weightSum="100"
tools:context=".MainActivity" >

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="5dp"
    android:layout_weight="60"
    android:orientation="vertical"
    android:weightSum="100" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="match_parent"
        android:layout_height="200sp"
        android:layout_weight="50"
        android:background="@android:color/white"
        android:text="" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="match_parent"
        android:layout_height="200sp"
        android:layout_marginTop="23dp"
        android:layout_weight="50"
        android:background="@android:color/darker_gray"
        android:text="" />
</LinearLayout>

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="5dp"
    android:layout_weight="40"
    android:orientation="vertical"
    android:weightSum="100" >

    <TextView
        android:id="@+id/textView3"
        android:layout_width="match_parent"
        android:layout_height="158dp"
        android:layout_marginLeft="15dp"
        android:layout_weight="1"
        android:background="#FFEE66"
        android:text="" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:layout_marginLeft="15dp"
        android:layout_marginTop="5dp"
        android:layout_weight="1"
        android:background="#AABB66"
        android:text="" />

    <TextView
        android:id="@+id/textView5"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:layout_marginLeft="15dp"
        android:layout_marginTop="5dp"
        android:layout_weight="1"
        android:background="#ee1166"
        android:text="" />

    <SeekBar
        android:id="@+id/seekBar1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="15dp"
        android:layout_weight="1"
        android:max="100"
        android:progress="0" 
        android:background="@android:color/black"/>
</LinearLayout>

</LinearLayout>