좋아, 나는 칵테일 양식 목록을 선택할 수있는 칵테일 성경 응용 프로그램을 가지고 있으며 텍스트, img 및 youtube 클립을 연결하는 버튼과 같은 칵테일에 대한 다양한 정보를 표시해야합니다. 코드는 컴파일하지만 목록에있는 항목 중 하나를 클릭하면 예상치 못한 응용 프로그램의 충돌이 발생합니다. 또한 순간에 내 애플 리케이션은 두 개의 칵테일을 허용 어떻게 20 칵테일을 실행할 수 있습니까? 그런데 대부분 수입품을 모두 제거했습니다.Android - 예기치 않은 앱 충돌
코드 목록 클래스에게 칵테일의 목록 여기
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")));
}
});
}
}
인 칵테일 표시 페이지의 정보를 변경
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);
}
}
코드를 생성
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();
}
};
});
}
}
코드를 실행 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 파일
<?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>
logcat의 stacktrace가 더 도움이 될 것입니다. –
마지막 줄을 채운 후 stacktrace를 게시하면 여기에 붙여 넣어졌습니다 ... – user1969053
미안하지만 바뀌 었습니다. – user1323808