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我想从数据库中动态地创建单选按钮我已经浏览这个问题,但不工作。当我调用函数从数据库获取值并传递应用程序上下文的值时,函数被调用,并且在调用函数或返回值时没有错误,但是当视图返回线性布局时,它将显示初始创建的空白xml。我需要帮助来展示这些价值观。提前致谢。 这里是代码:动态单选按钮无线电组和视图不工作
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_result);
StrictMode.ThreadPolicy policy=new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
dbcon=DBConnection.instance(this);
dbcon.connect("ip:1433", "pas", "login", "db");
Context cntxt=getApplicationContext();
try {
Thread.sleep(10);
String city=getIntent().getExtras().getString("city");
String choice=getIntent().getExtras().getString("choice");
LinearLayout ll=new LinearLayout(cntxt);
ll.setOrientation(LinearLayout.VERTICAL);
ImageView iv=new ImageView(cntxt);
RadioGroup.LayoutParams prams=new RadioGroup.LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT);
prams.setMargins(0, 2, 0, 2);
RadioGroup rg=(RadioGroup)findViewById(R.id.RRG);
ll=dbcon.GetResultList(rg,choice,city,iv,cntxt,ll);
((ViewGroup)findViewById(R.id.RRG)).addView(ll);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
这里是我从活动调用的函数:
@SuppressLint("NewApi")
public LinearLayout GetResultList(RadioGroup rg,String choice,String city,ImageView iv,Context context, LinearLayout ll) {
// TODO Auto-generated method stub
if(conn==null){
}
try{
RadioButton rb;
rg.setBackgroundColor(Color.LTGRAY);
Statement st=conn.createStatement();
ResultSet rs=st.executeQuery("select * from AM_NATIONAL where ca_city="+city+ "order by cvg_count");
while (rs.next()){
rb=new RadioButton(context);
rb.setId(rs.getInt(1));
rb.setText(rs.getString(2)+"\n");
rb.setText(rs.getString(3)+"\n");
rb.setText(rs.getInt(8));
byte[] photo=rs.getBytes(4);
Bitmap bitmap;
bitmap=BitmapFactory.decodeByteArray(photo, 0, photo.length);
iv.setImageBitmap(bitmap);
rb.setEnabled(false);
rg.addView(iv);
rg.addView(rb);
ll.addView(rg);
}
rs.close();
st.close();
}
catch(SQLException e){
}
return ll;
}
,这里是我使用这个XML文件:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
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"
tools:context=".ResultActivity" >
<ScrollView
android:id="@+id/scrollView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="@+id/imageView1"
android:layout_alignParentLeft="true" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<RadioGroup
android:id="@id/RRG"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</RadioGroup>
</LinearLayout>
</ScrollView>
</RelativeLayout>
为什么你要在Radio组中添加imageview? – 2014-09-01 05:51:21
,因为我想显示数据库中的图像与单选按钮 – Awais 2014-09-01 06:30:50
但问题是不存在的问题是,然后线性布局返回它是空的 – Awais 2014-09-01 06:31:51