Question

I have a main.xml layout set up with boxes to set times for a workout and you will be alerted when the time runs out for each. You just press start button to start the timers. How can I make it so when you type in the time and press start it atully starts timing and alerts you?

main.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:orientation="vertical" >

<TextView
    android:id="@+id/textView1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/hello" />

<TextView
    android:id="@+id/textView2"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="" />

<TextView
    android:id="@+id/textView3"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Warm-Up" />

<EditText
    android:id="@+id/editText1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:inputType="numberDecimal" >
</EditText>

<TextView
    android:id="@+id/textView4"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Fast" />

<EditText
    android:id="@+id/editText2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:inputType="numberDecimal" />

<TextView
    android:id="@+id/textView5"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Recovery" />

<EditText
    android:id="@+id/editText3"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:inputType="numberDecimal" >
</EditText>

<TextView
    android:id="@+id/textView6"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Times" />

<EditText
    android:id="@+id/editText4"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:inputType="numberDecimal" />

<TextView
    android:id="@+id/textView7"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Cool-Down" />

<EditText
    android:id="@+id/editText5"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:inputType="numberDecimal" />

<Button
    android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Start" />

Answer 1

 new CountDownTimer(timeToBlow, timeToTick) {

 public void onTick(long millisUntilFinished) {
     Log.d(TAG,"About to blow!!!");
 }

 public void onFinish() {
     Log.d(TAG,"BOOM!");
 }
}.start();

Just replace timeToBlow with the time that you get from your text fields, and timeToTick with any time that you want.

Source