Ok so I have a cocktail bible app that lets you select a cocktail form a list and it should display various information about the cocktail like text,img and a button to link a youtube clip.The code is compiling but when I click on one of the items in the list the app unexpected crashes. Also at the moment my app only allows two cocktail's how would I get it to run 20 cocktails? I have removed mostly all imports by the way.
Code to run the list class
package com.drunktxtapp;
import android.app.Activity;
public class CocktailMenu extends Activity {
String classes[] = {"Bloody_Mary", "Capirinha", "Cosmopolitan", "Cuba_Libre", "Daiquiri", "Mai_Tai", "Manhattan", "Margarita", "Martini", "Mint_Julep", "Mojito", "Old_Fashoned", "Pina_Colada", "Screwdriver", "Singapore_Sling", "Tom_Collins", "Whiskey_Sour", "White_Russian"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.cocktail_menu);
Button b1 = (Button) findViewById(R.id.bByList);
Button b2 = (Button) findViewById(R.id.bRandomCocktail);
b1.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
try {
Class<?> menuClass = Class.forName("com.drunktxtapp.Menu");
Intent ourIntent = new Intent(CocktailMenu.this, menuClass);
startActivity(ourIntent);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
b2.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
String cocktailType = classes[(int) (Math.random() * classes.length)];
try{
Class<?> ourClass = Class.forName("com.drunktxtapp." + cocktailType);
Intent openRandom = new Intent(CocktailMenu.this, ourClass);
startActivity(openRandom);
}catch (ClassNotFoundException e){
e.printStackTrace();
}
};
});
}
}
code that produces a list of cocktails
package com.drunktxtapp;
import android.app.ListActivity;
public class Menu extends ListActivity{
String classes[] = {"Bloody_Mary", "Capirinha", "Cosmopolitan", "Cuba_Libre", "Daiquiri", "Mai_Tai", "Manhattan", "Margarita", "Martini", "Mint_Julep", "Mojito", "Old_Fashoned", "Pina_Colada", "Screwdriver", "Singapore_Sling", "Tom_Collins", "Whiskey_Sour", "White_Russian"};
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setListAdapter(new ArrayAdapter<String>(Menu.this,android.R.layout.simple_list_item_1, classes));
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
// TODO Auto-generated method stub
super.onListItemClick(l, v, position, id);;
Intent ourIntent = new Intent(Menu.this, CocktailDetail.class);
ourIntent.putExtra("Bloody_Mary", "Capirinha");
startActivity(ourIntent);
}
}
Code that changes the information of the cocktail display page
package com.drunktxtapp;
import android.net.Uri;
public class CocktailDetail extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.cocktaildetail);
ImageView imageView1 = (ImageView)findViewById(R.id.imageCocktail);
imageView1.setImageDrawable(getResources().getDrawable(R.drawable.bloodymary));
Button b1 = (Button) findViewById(R.id.bYoutube);
TextView t1 = (TextView)findViewById(R.id.textCocktailName);
String cocktailName = getIntent().getStringExtra("Bloody Mary");
t1.setText(cocktailName);
b1.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.youtube.com/watch?v=Alt-ehDc3fc")));
}
});
}
}
Here is the LogCat
04-18 09:22:38.085: E/AndroidRuntime(1068): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1227)
04-18 09:22:38.085: E/AndroidRuntime(1068): at android.os.Handler.dispatchMessage(Handler.java:99)
04-18 09:22:38.085: E/AndroidRuntime(1068): at android.os.Looper.loop(Looper.java:137)
04-18 09:22:38.085: E/AndroidRuntime(1068): at android.app.ActivityThread.main(ActivityThread.java:4898)
04-18 09:22:38.085: E/AndroidRuntime(1068): at java.lang.reflect.Method.invokeNative(Native Method)
04-18 09:22:38.085: E/AndroidRuntime(1068): at java.lang.reflect.Method.invoke(Method.java:511)
04-18 09:22:38.085: E/AndroidRuntime(1068): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
04-18 09:22:38.085: E/AndroidRuntime(1068): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
04-18 09:22:38.085: E/AndroidRuntime(1068): at dalvik.system.NativeStart.main(Native Method)
04-18 09:22:38.085: E/AndroidRuntime(1068): Caused by: java.lang.NullPointerException
04-18 09:22:38.085: E/AndroidRuntime(1068): at com.drunktxtapp.CocktailDetail.onCreate(CocktailDetail.java:26)
04-18 09:22:38.085: E/AndroidRuntime(1068): at android.app.Activity.performCreate(Activity.java:5206)
04-18 09:22:38.085: E/AndroidRuntime(1068): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1083)
04-18 09:22:38.085: E/AndroidRuntime(1068): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2064)
04-18 09:22:38.085: E/AndroidRuntime(1068): ... 11 more
04-18 09:27:46.270: I/Process(1068): Sending signal. PID: 1068 SIG: 9
XML file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="@drawable/beer"
android:id="@+id/cocktailDetail" >
<TextView
android:id="@+id/textCocktailName"
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Cocktail Name"
android:textAppearance="?android:attr/textAppearanceLarge" />
<ImageView
android:id="@+id/imageCocktail"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="@drawable/bloodymary" />
<TextView
android:textStyle="bold"
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Ingredients"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/textIngredients"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Insert txt here"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textStyle="bold" />
<TextView
android:textStyle="bold"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="2dp"
android:text="Preparation"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/textPrepration"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Insert txt here"
android:textAppearance="?android:attr/textAppearanceSmall"
android:textStyle="bold" />
<Button
android:id="@+id/buttonYoutube"
android:layout_width="200dp"
android:layout_height="75dp"
android:layout_gravity="center"
android:layout_marginTop="5dp"
android:text="YouTube Clip"
android:textSize="20dp" />
</LinearLayout>
