[Android Q&A, Help & Troubleshooting] gnmmarechal:
So, Im making a Root Checker app for android with Root Tools.

However, when I run it on a device, the button doesnt do anything... Here's my code:

MainActivity.java

package com.gs2012.rootchecker;

import com.stericson.RootTools.RootTools;

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

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
Button aButton;
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
aButton = (Button) this.findViewById(R.id.button1);
final TextView hasbusybox = (TextView) this.findViewById(R.id.TextView03);
final TextView hassu = (TextView) this.findViewById(R.id.TextView02);
final TextView hasroot = (TextView) this.findViewById(R.id.TextView04);
aButton.setOnClickListener(new OnClickListener() {
public void onClick1(final View v) {
// Here is where we tell it what to do
if (RootTools.isBusyboxAvailable())
{
hasbusybox.setText("Busybox OK");
}
else
{
hasbusybox.setText("NOT OK");
}
if (RootTools.isRootAvailable())
{
hassu.setText("SU OK");
}
else {
{
hassu.setText("NOT OK");
}
if (RootTools.isAccessGiven())
{
hasroot.setText("ROOT OK");
}
else
{
hasroot.setText("NOT OK");

}
}
}

@Override
public void onClick(View v) {
// TODO Auto-generated method stub

;}});

}

@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" >

<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:text="Click the button to check for root access."
android:textAppearance="?android:attr/textAppearanceLarge" />

<Button
android:id="@+id/button1"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/textView1"
android:layout_centerHorizontal="true"
android:layout_marginTop="47dp"
android:text="CHECK NOW" />

<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/button1"
android:layout_marginTop="80dp"
android:text="Busybox installed:"
android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/textView2"
android:layout_alignBottom="@+id/textView2"
android:layout_marginLeft="16dp"
android:layout_toRightOf="@+id/textView2"
android:text="NOT CHECKED"
android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
android:id="@+id/TextView01"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/textView2"
android:layout_marginTop="29dp"
android:layout_toLeftOf="@+id/textView3"
android:text="SU installed:"
android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
android:id="@+id/TextView03"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/TextView01"
android:layout_marginTop="28dp"
android:layout_toLeftOf="@+id/textView3"
android:text="Has root access:"
android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
android:id="@+id/TextView04"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@+id/TextView03"
android:layout_alignBottom="@+id/TextView03"
android:layout_alignLeft="@+id/textView3"
android:text="NOT CHECKED"
android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
android:id="@+id/TextView02"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/TextView03"
android:layout_alignLeft="@+id/TextView04"
android:text="NOT CHECKED"
android:textAppearance="?android:attr/textAppearanceMedium" />

<TextView
android:id="@+id/TextView05"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="Click the button to check for root access."
android:textAppearance="?android:attr/textAppearanceLarge" />

<TextView
android:id="@+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignRight="@+id/textView1"
android:text="By Gnm Software 2012"
android:textAppearance="?android:attr/textAppearanceLarge" />

</RelativeLayout>