我计划用启动画面创建应用程序启动取决于用户偏好（最终目标，仍然没有添加onclick监听器到按钮），我开始一步一步实现它并且它第一次优先使用单选按钮，
当我运行应用程序并按下选项菜单中的首选项按钮时，它会强制关闭，如下面的代码。
我知道可以通过xml文件夹中的preference.xml中的listpreference来完成，但如果可能的话，id就像在布局中那样做。
任何帮助将不胜感激，谢谢
Splash.java
public class Splash extends Activity {
MediaPlayer ourSong;
@Override
protected void onCreate(Bundle savedInstanceState) {
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
setContentView(R.layout.splash);
ourSong = MediaPlayer.create(Splash.this, R.raw.splashsound);
ourSong.start();
Thread timer = new Thread(){
public void run(){
try{
sleep(2000);
}
catch (InterruptedException e){
e.printStackTrace();
}
finally{
Intent intent = new Intent(Splash.this, MainActivity.class);
startActivity(intent);
}
}
};
timer.start();
}
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
ourSong.release();
finish();
}
}
MainActivity.java
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
}
@Override
public boolean onCreateOptionsMenu(android.view.Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.cool_menu, menu);
getLayoutInflater().setFactory(new Factory() {
public View onCreateView(String name, Context context,AttributeSet attrs) {
if (name .equalsIgnoreCase("com.android.internal.view.menu.IconMenuItemView")) {
try {
LayoutInflater li = LayoutInflater.from(context);
final View view = li.createView(name, null, attrs);
new Handler().post(new Runnable() {
public void run() {
((TextView) view).setTextSize(25);
((TextView) view).setTextColor(Color.RED);
}
}
);
return view;
}
catch (InflateException e) {
}
catch (ClassNotFoundException e) {
}
}
return null;
}
}
);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
case R.id.aboutUs:
Intent i = new Intent("com.example.custompreference.ABOUT");
startActivity(i);
break;
case R.id.preferences:
Intent p = new Intent("com.example.custompreference.PREFS");
startActivity(p);
break;
case R.id.exit:
finish();
break;
}
return false;
}
}
Prefs.java
public class Prefs extends PreferenceActivity{
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.pref);
}
}
pref.xml
<?xml version="1.0" encoding="utf-8"?>
<RadioGroup xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:gravity="center">
<RadioButton android:id="@+id/radio_first"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="First"
android:textColor="#B22222"
android:onClick="onRadioButtonClicked"/>
<RadioButton android:id="@+id/radio_second"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Second"
android:onClick="onRadioButtonClicked"/>
</RadioGroup>
的AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.custompreference"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.custompreference.Splash"
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=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="com.example.custompreference.MAINACTIVITY" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".AboutUs"
android:label="@string/app_name" >
<intent-filter>
<action android:name="com.example.custompreference.ABOUT" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".Prefs"
android:label="@string/app_name" >
<intent-filter>
<action android:name="com.example.custompreference.PREFS" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
logcat的：
java.lang.RuntimeException: Unable to start activity
ComponentInfo{com.example.custompreference/com.example.custompreference.Prefs}:
java.lang.RuntimeException: Your content must have a ListView whose id attribute is
'android.R.id.list'
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667)
at android.app.ActivityThread.access$1500(ActivityThread.java:117)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3687)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.RuntimeException: Your content must have a ListView whose id
attribute is 'android.R.id.list'
at android.app.ListActivity.onContentChanged(ListActivity.java:243)
atandroid.preference.PreferenceActivity.onContentChanged(PreferenceActivity.java:165)
at om.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:219)
at android.app.Activity.setContentView(Activity.java:1660)
at com.example.custompreference.Prefs.onCreate(Prefs.java:11)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615)
答案 0 :(得分：0)
如果查看logcat，可以看到需要ListView。
但是你这一切都错了。您基本上应该创建一个Preferences.xml文件，在其中指定PreferenceActivity中您需要的首选项小部件，例如单击RadioButtons，然后将该xml文件分配给PreferenceActivity，如下所示：
addPreferencesFromResource(R.xml.preferences);
来自this tutorial的Preferences.xml示例（文件位于res / xml文件夹中，您应该自己创建）
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android" >
<PreferenceCategory
android:summary="Username and password information"
android:title="Login information" >
<EditTextPreference
android:key="username"
android:summary="Please enter your login username"
android:title="Username" />
<EditTextPreference
android:key="password"
android:summary="Enter your password"
android:title="Password" />
</PreferenceCategory>
<PreferenceCategory
android:summary="Username and password information"
android:title="Settings" >
<CheckBoxPreference
android:key="checkBox"
android:summary="On/Off"
android:title="Keep me logged in" />
<ListPreference
android:entries="@array/listOptions"
android:entryValues="@array/listValues"
android:key="listpref"
android:summary="List preference example"
android:title="List preference" />
</PreferenceCategory>
</PreferenceScreen>
所以看看here
编辑：
您可以在Preferences.xml中向ListView添加自定义条目，如下所示：
<Preference
android:layout="@layout/your_custom_pref_entry"
android:key="SOME_KEY_NAME" />
不知道如何从那里处理RadioButtons选择。