我有一个列表视图,每行有文本和按钮,列表视图setOnItemClickListener()不起作用.是否可以以不同方式处理项目点击和按钮点击事件(项目点击应调用ActivityA,按钮点击应调用ActivityB).有没有人有办法解决吗
private ArrayList<String> userIDArr = null;
private ArrayList<String> userNameArr = null;
private DatabaseHelper dbHelper = null;
private ListView userListView=null;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.list_view);
dbHelper = new DatabaseHelper(this.getApplicationContext());
Map<String,ArrayList<String>> displayMap = dbHelper.getUserListToDisplay();
userIDArr = displayMap.get("UserID");
userNameArr = displayMap.get("FirstName1");
userListView = (ListView) findViewById(R.id.listView2);
userListView.setAdapter(new UserListAdapter(this,userIDArr));
userListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
Toast.makeText(usersListActivity.this,
"Item in position " + position + " clicked", Toast.LENGTH_LONG).show();
}
});
}
public class UserListAdapter extends ArrayAdapter<String> …如何解决这个NoClassDefFoundError.我已经在我的应用程序中集成了Zxing,每件事都运行良好.然后我更新了我的sdk和eclipse插件,当我运行项目时,日志说
03-27 17:27:45.173: E/AndroidRuntime(8917): FATAL EXCEPTION: main
03-27 17:27:45.173: E/AndroidRuntime(8917): java.lang.ExceptionInInitializerError
03-27 17:27:45.173: E/AndroidRuntime(8917): at java.lang.Class.newInstanceImpl(Native Method)
03-27 17:27:45.173: E/AndroidRuntime(8917): at java.lang.Class.newInstance(Class.java:1429)
03-27 17:27:45.173: E/AndroidRuntime(8917): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
03-27 17:27:45.173: E/AndroidRuntime(8917): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577)
03-27 17:27:45.173: E/AndroidRuntime(8917): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
03-27 17:27:45.173: E/AndroidRuntime(8917): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
03-27 17:27:45.173: E/AndroidRuntime(8917): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
03-27 17:27:45.173: E/AndroidRuntime(8917): at android.os.Handler.dispatchMessage(Handler.java:99)
03-27 17:27:45.173: E/AndroidRuntime(8917): at android.os.Looper.loop(Looper.java:123)
03-27 17:27:45.173: E/AndroidRuntime(8917): at android.app.ActivityThread.main(ActivityThread.java:4627)
03-27 17:27:45.173: E/AndroidRuntime(8917): at java.lang.reflect.Method.invokeNative(Native Method)
03-27 17:27:45.173: E/AndroidRuntime(8917): at java.lang.reflect.Method.invoke(Method.java:521)
03-27 17:27:45.173: E/AndroidRuntime(8917): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
03-27 17:27:45.173: …我正在尝试从我的资源文件夹中复制现有数据库并对其执行一些操作.一切正常,但我的模拟器的日志文件中出现以下错误:
sqlite returned: error code = 14, msg = cannot open file at source line 25467
09-06 11:23:41.844: INFO/Database(22560): sqlite returned: error code = 14, msg = cannot open file at source line 25467
09-06 11:23:41.885: ERROR/Database(22560): sqlite3_open_v2("/data/data/com.dhani.Lazy/databases/LazyDB.sqlite", &handle, 1, NULL) failed
09-06 11:23:41.885: WARN/System.err(22560): android.database.sqlite.SQLiteException: unable to open database file
09-06 11:23:41.894: WARN/System.err(22560): at android.database.sqlite.SQLiteDatabase.dbopen(Native Method)
09-06 11:23:41.904: WARN/System.err(22560): at android.database.sqlite.SQLiteDatabase.<init>(SQLiteDatabase.java:1849)
09-06 11:23:41.914: WARN/System.err(22560): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:820)
09-06 11:23:41.914: WARN/System.err(22560): at com.dharani.LazyApple.Database.DataBaseHelper.checkDataBase(DataBaseHelper.java:72)
09-06 11:23:41.914: WARN/System.err(22560): at com.dharani.LazyApple.Database.DataBaseHelper.createDataBase(DataBaseHelper.java:47)
09-06 11:23:41.914: WARN/System.err(22560): …我的应用程序必须在Web视图中显示来自HtmlString的印地文文本
HtmlString ="<html><body style='background-color:#000000; color:ffffff; font-family:georgia,times new roman,times,seri,krutidev010; margin-top:0px; margin-bottom:0px; margin-right:0px; margin-left:0px; padding:0px;'><div style='padding:0px;'></div><div style='padding:5px;'><b>"+SharedVariables.ArrayOfNewsItems.get(SelectedRow).getTitle()+"</b><p align='justify'>"+SharedVariables.ArrayOfNewsItems.get(SelectedRow).getContent()+"</p></div><p></p></body></html>";
MyWebView.loadData(HtmlString, "contentType=text/html", "charset=UTF-8");
我怎样才能做到这一点.
我想为每个组显示不同的子布局,如:
@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
if (convertView == null) {
switch (groupPosition){
case 0:
LayoutInflater inflater = (LayoutInflater) myContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.child_row, null);
TextView tvPlayerName = (TextView) convertView.findViewById(R.id.tvPlayerName);
tvPlayerName.setText(arrChildelements[groupPosition][childPosition]);
break;
case 1:
LayoutInflater inflater1 = (LayoutInflater) myContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater1.inflate(R.layout.child_row1, null);
TextView tvPlayerName1 = (TextView) convertView.findViewById(R.id.tvPlayerName);
tvPlayerName1.setText(arrChildelements[groupPosition][childPosition]);
break;
case 2:
LayoutInflater inflater2 = (LayoutInflater) myContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater2.inflate(R.layout.child_row2, null);
TextView tvPlayerName2 = (TextView) convertView.findViewById(R.id.tvPlayerName);
tvPlayerName2.setText(arrChildelements[groupPosition][childPosition]);
break;
case 3:
LayoutInflater inflater3 …我的应用程序必须显示存储在assets文件夹中的5个HTML页面,以及如何在单个webview中显示它们.