Question

I am new to Android and exploring it at the moment.
I have two Image Buttons which have to load different activities onClick.

ImageButton btn1= (ImageButton)findViewById(R.id.timetable);
btn1.setOnClickListener(btnListener1);

ImageButton btn2= (ImageButton)findViewById(R.id.location);
btn2.setOnClickListener(btnListener2);
private OnClickListener btnListener1 = new OnClickListener()
{
    public void onClick(View view)
    {                        
         Intent myIntent = new Intent(getBaseContext(), HelloWorld1.class);
         startActivity(myIntent);
    }
};

private OnClickListener btnListener2 = new OnClickListener()
{
    public void onClick(View view)
    {                 
        Intent myIntent2 = new Intent(getBaseContext(), HelloWorld2.class);         
        startActivity(myIntent2);
    }
};

//my manifest ……

<activity android:name="myApp" android:label="@string/app_name">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>        
<activity android:name=".HelloWorld1"></activity>
<activity android:name=".HelloWorld2"></activity>

//and my main.xml

<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout
android:id="@+id/widget34"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:background="#ffffff"
>

<GridView
    android:id="@+id/widget36"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:numColumns="2"
    android:layout_x="110px"

    android:layout_y="32px"
    android:layout_centerInParent="true">
</GridView>
<ImageButton
    android:id="@+id/timetable"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_x="210px"
    android:layout_y="142px"
    android:background="@drawable/icon2">
</ImageButton>
<ImageButton
    android:id="@+id/location"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_x="100px"
    android:layout_y="342px"
    android:background="@drawable/icon">
</ImageButton>

This code causes errors, could anyone point where I am going wrong please.
Many thanks in advance.

Answer 1

Let’s put aside the finish() method since i dont know what the heck it’s doing there 🙂
Case1: Look careful at your activity xml view file, you might accidentally define your button as Button instead of ImageButton -> Error

Case2: dont use view.getContext(), instead use getBaseContext() or getApplicationContext()