我有一个用sqlite数据填充的列表视图.单击列表视图项后,我想显示有关新活动的详细数据.下面的代码会在单击列表视图项时使应用程序崩溃.请看我的代码.
列表视图项目单击代码
listView.setonItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
Cursor res = myDB.getPersonnelList();
Intent intent = new Intent(User.this, PersonnelDetails.class);
intent.putExtra("id", res.getInt(0));
intent.putExtra("barcode", res.getString(1));
intent.putExtra("name", res.getString(2));
intent.putExtra("position", res.getString(3));
intent.putExtra("number", res.getString(4));
startActivity(intent);
}
});
DatabaseHelper getList
public Cursor getPersonnelList(){
sqliteDatabase db = this.getWritableDatabase();
Cursor res = db.rawQuery("select * from " +TABLE_NAME, null);
return res;
}
详细的活动
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_personnel_details);
editBar = (EditText)findViewById(R.id.et_bar);
editName = (EditText)findViewById(R.id.et_neym);
editPos = (EditText)findViewById(R.id.et_pos);
editNum = (EditText)findViewById(R.id.et_num);
//imageView = (ImageView)findViewById(R.id.iv_pic);
Intent intent = getIntent();
if(intent != null){
s_id = intent.getStringExtra("id");
s_bar = intent.getStringExtra("barcode");
s_name = intent.getStringExtra("name");
s_pos = intent.getStringExtra("position");
s_num = intent.getStringExtra("number");
}
editBar.setText(s_bar);
editName.setText(s_name);
editPos.setText(s_pos);
editNum.setText(s_num);
}
android.database.Cursorindexoutofboundsexception: Index -1 requested, with a size of 23
at android.database.AbstractCursor.checkPosition(AbstractCursor.java:426)
at android.database.AbstractwindowedCursor.checkPosition(AbstractwindowedCursor.java:136)
at android.database.AbstractwindowedCursor.getInt(AbstractwindowedCursor.java:68)
at com.example.chris.monitoring.User$1.onItemClick(User.java:65)
at android.widget.AdapterView.performItemClick(AdapterView.java:299)
at android.widget.AbsListView.performItemClick(AbsListView.java:1113)
at android.widget.AbsListView$PerformClick.run(AbsListView.java:2904)
at android.widget.AbsListView$3.run(AbsListView.java:3638)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5021)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:827)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:643)
at dalvik.system.NativeStart.main(Native Method)
解决方法:
试试这个,游标需要移动到期望索引得到正确的值:
Cursor res = myDB.getPersonnelList();
//res.movetoFirst();
res.movetoPosition(position);
Intent intent = new Intent(User.this, PersonnelDetails.class);
intent.putExtra("id", res.getInt(0));
intent.putExtra("barcode", res.getString(1));
intent.putExtra("name", res.getString(2));
intent.putExtra("position", res.getString(3));
intent.putExtra("number", res.getString(4));
startActivity(intent);