Protected void onCreate (Bundle savedInstanceState) from MainActivity I set the button so that it is invisible and also does not occupy space with the following code: button.setVisibility(View.GONE);
MainActivity :
package genesysgeneration.stackx;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
private Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button=(Button)findViewById(R.id.button);
button.setVisibility(View.GONE);
TypeWriter textView=(TypeWriter)findViewById(R.id.textView);
textView.setCharacterDelay(1);
textView.animatedText("lansdfçaksjfçkajsçfljkasçlfkaçslkgçlaksgçlaksglçakçlgmnasçkdnbklanslkjbnlkasnbklanslkbnalksbnlaksn");
}
}
I use the following class (TypeWriter) so that TextView is written bit by bit (hence the term Animated TextView I used).
TypeWriter :
public class TypeWriter extends TextView{
private CharSequence mText;
private int mIndex;
private long mDelay = 1;
public TypeWriter(Context context){
super(context);
}
public TypeWriter(Context context, AttributeSet attrs){
super(context, attrs);
}
private Handler mHandler = new Handler();
private Runnable characterAdder = new Runnable() {
@Override
public void run() {
setText(mText.subSequence(0, mIndex++));
if (mIndex<=mText.length()){
mHandler.postDelayed(characterAdder, mDelay);
}
}
};
public void animatedText(CharSequence text){
mText=text;
mIndex=0;
setText("");
mHandler.removeCallbacks(characterAdder);
mHandler.postDelayed(characterAdder, mDelay);
}
public void setCharacterDelay(long millis){
mDelay=millis;
}
}
XML :
<?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"
tools:context="genesysgeneration.stackx.MainActivity">
<genesysgeneration.stackx.TypeWriter
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_below="@+id/textView"
android:text="Button" />
</RelativeLayout>
I would like it to be visible only after all the text has been written .
I have no idea where to put it in the code so that the button becomes visible again after TextView has been fully written, but I think it's in MainActivity .
I've thought about counting the number of characters to compare, but it did not work (at least not the way I tried).