Question

I know this has been asked before(and I have read lots of posts here about them) but I can’t figure out what I’m doing wrong. I want to set some things up as global variables to use throughout my app. So I created a new folder (which I think created a new app?) with a class in it :

Which is all good. In the Global.java I have the following:

package com.directenquiries.assessment.tool.Globals;

import android.app.Application;
import android.os.Environment;

public class Global extends Application {
      public String foo;
      public String SDcard = Environment.getExternalStorageDirectory().getAbsolutePath();


    }

My Manifest file now looks like: (which I think might be the culprit?)

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.directenquiries.assessment.tool"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".LoginPageActivity"
            android:label="@string/title_activity_login_page" >

            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>

    <application
       android:name="Global" 
       android:label="@string/app_name" >
    </application>


</manifest>

And I’m trying to call the variable back in my LoginPageActivity like:

String SDLoc = ((Global) this.getApplication()).foo;

        TextView obs = (TextView) findViewById(R.id.textView1);
        obs.setText(SDLoc);

But my app falls over with:

09-11 14:14:19.354: W/dalvikvm(5339): threadid=1: thread exiting with uncaught exception (group=0x40c4f1f8)
09-11 14:14:19.359: E/AndroidRuntime(5339): FATAL EXCEPTION: main
09-11 14:14:19.359: E/AndroidRuntime(5339): java.lang.ClassCastException: android.app.Application cannot be cast to com.directenquiries.assessment.tool.Globals.Global

Any help will be appreciated

Answer 1

Modify public String foo to public final static String foo and than you can refere to as Global.foo.
You don’t need to put Global class in another package.