我正在尝试在 Android 中开发 ListView ，其中包含客户名称＆amp;地址和此列表视图位于 TabWidget ...中！但是，每当我单击该选项卡查看客户列表信息时，应用程序就会中断。以下是我的代码......！
异常是 java.lang.IllegalStateException：您是否忘记调用＆＃39; public void setup（LocalActivityManager activityGroup）＆＃39;？
异常IllegalStateException（id = 830019169944）
导致IllegalStateException（id = 830019169944）detailMessage＆＃34;没有 你忘记调用公共无效设置（LocalActivityManager 的ActivityGroup）＆＃39;＆＃34; （id = 830019169976）stackState（id = 830019170216）
stackTrace null suppressExceptions ArrayList（id = 830019170192）
XML PAGE
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TabWidget
android:id="@android:id/tabs"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:tag="tab0"
android:text="MainMenu"
android:background="@android:drawable/btn_star_big_on"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
/>
<TextView
android:tag="tab1"
android:text="Customers"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
/>
</TabWidget>
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin" >
<TextView
android:id="@+id/lblmainmenu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Main Menu"
android:textSize="20sp" />
<ImageButton
android:id="@+id/btnStock"
android:layout_marginTop="20dp"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_alignLeft="@+id/lblmainmenu"
android:layout_below="@+id/lblmainmenu"
android:onClick="btn_clickstock"
android:scaleType="fitCenter"
android:src="@drawable/dailystock" />
<ImageButton
android:id="@+id/btnDailySummury"
android:layout_marginTop="20dp"
android:layout_width="120dp"
android:layout_height="120dp"
android:layout_marginLeft="40dp"
android:layout_below="@+id/lblmainmenu"
android:layout_toRightOf="@+id/btnStock"
android:onClick="btn_clickDailySummury"
android:scaleType="fitCenter"
android:src="@drawable/dailystock" />
</RelativeLayout>
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin" >
</ListView>
</FrameLayout>
</LinearLayout>
</TabHost>
JAVA主要活动代码
public class MainMenuActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_menu);
Intent intent = new Intent(this, Customer_List_Activity.class);
TabHost tabHost = (TabHost) findViewById(android.R.id.tabhost);
tabHost.setup();
final TabWidget tabWidget = tabHost.getTabWidget();
final FrameLayout tabContent = tabHost.getTabContentView();
// Get the original tab textviews and remove them from the viewgroup.
TextView[] originalTextViews = new TextView[tabWidget.getTabCount()];
for (int index = 0; index < tabWidget.getTabCount(); index++) {
originalTextViews[index] = (TextView) tabWidget.getChildTabViewAt(index);
}
tabWidget.removeAllViews();
// Ensure that all tab content childs are not visible at startup.
for (int index = 0; index < tabContent.getChildCount(); index++) {
tabContent.getChildAt(index).setVisibility(View.GONE);
}
// Create the tabspec based on the textview childs in the xml file.
// Or create simple tabspec instances in any other way...
for (int index = 0; index < originalTextViews.length; index++) {
final TextView tabWidgetTextView = originalTextViews[index];
final View tabContentView = tabContent.getChildAt(index);
TabSpec tabSpec = tabHost.newTabSpec((String) tabWidgetTextView.getTag());
if (index == 0)
{
tabSpec.setContent(new TabContentFactory() {
@Override
public View createTabContent(String tag) {
return tabContentView;
}
});
}
else
tabSpec.setContent(intent);
if (tabWidgetTextView.getBackground() == null) {
tabSpec.setIndicator(tabWidgetTextView.getText());
} else {
tabSpec.setIndicator(tabWidgetTextView.getText(), tabWidgetTextView.getBackground());
}
tabHost.addTab(tabSpec);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
ListView活动代码XML页面
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView android:id="@+id/text1"
android:textSize="14dp"
android:textColor="#FFFFFF"
android:textStyle="italic"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<TextView android:id="@+id/text2"
android:textSize="12dp"
android:textColor="#BFFF00"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
ListView活动代码Java
public class Customer_List_Activity extends ListActivity {
private SimpleAdapter sa;
ArrayList<HashMap<String,String>> list = new ArrayList<HashMap<String,String>>();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main_menu);
HashMap<String,String> item;
for(int i=0;i<HardwareShops.length;i++){
item = new HashMap<String,String>();
item.put( "line1", HardwareShops[i][0]);
item.put( "line2", HardwareShops[i][1]);
list.add( item );
}
sa = new SimpleAdapter(this, list,
R.layout.list_for_customer ,
new String[] { "line1","line2" },
new int[] {android.R.id.text1, android.R.id.text2});
setListAdapter( sa );
}
private String[][] HardwareShops =
{{"Jayasekara","Colombo 03"},
{"Chandana","Colombo 03"},
{"Ruban","Borella"},
{"Safras","Colombo 05"},
{"Harris","Rajagiriya"},
{"HJ","Nawala"},
{"Himali","Nugegoda"},
{"Nilawala","Colombo 13"},
{"Jayantha","Colombo 09"}};
}
会出现什么问题？有没有丢失的代码行？请帮助我谢谢
答案 0 :(得分：1)
您需要将MainMenuActivity的基类从Activity更改为ActivityGroup，如下所示：
public class MainMenuActivity extends ActivityGroup {
...
}
ActivityGroup将处理LocalActivityManager的一个实例。所以你不需要创建它。更改基类后，只需调用基类中定义的getLocalActivityManager（）函数即可获取该实例。调用tabHost的设置功能如下：
tabHost.setup(this.getLocalActivityManager());