小编Met*_*oiD的帖子

我想知道如果[sex_b,gender_c] setError为RadioGroup[性别],RadioButton如果它为空.

这就是我获得RadioButton价值的方式:

private boolean genradiocheck() {


    boolean gender_flag = false;
    if (gender.getCheckedRadioButtonId() == -1) {



    } else {
        gender_b = (RadioButton) findViewById(gender
                .getCheckedRadioButtonId());
        System.out.println("*********************" + gender_b.getText());
        gender_flag = true;
    }

    return gender_flag;
}    

现在我的问题是,如何将其放入字符串并检查空值？

这是用于注册表单验证.谢谢.

我正在尝试将JSON数组提取到一个AutoCompleteTextView但是我在下拉列表中获取每个值两次.

JSON:

{"names":[{"id":"1","names":"jacob"},{"id":"2","names":"amy"},{"id":"3","names":"melissa"}],"success":1,"message":"Successfully found "} 

类Ajax:

class Ajax5 extends AsyncTask<String, String, String> {// JSON STARTS HERE

    // new CreateNewProduct().execute();

    protected ArrayList<NameValuePair> parameters;
    JSONObject json;

    public Ajax5() {
        super();
        parameters = new ArrayList<NameValuePair>();

    }

    @Override
    protected void onPreExecute() {
        super.onPreExecute();

    }

    protected String doInBackground(String... args) {

        JSONParser jParser = new JSONParser();
        json = jParser
                .makeHttpRequest(
                        "http:link.php",
                        "GET", this.parameters);

        try {
            Log.d("Create Response", "four"
                    + json.getJSONObject("1").toString());
        } catch (JSONException e) {
            e.printStackTrace();
        }

        return null;
    }

    protected void …

DatePicker我的应用程序中有一个以这种方式设置:

布局:

            <TextView
                android:id="@+id/traveltext"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1.11"
                android:text="Date Of Travel"
                android:textStyle="bold" />

             <EditText
            android:id="@+id/txtDate"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1" >
        </EditText>

              <Button
            android:id="@+id/btnCalendar"
            android:layout_width="30dp"
            android:layout_height="42dp"
            android:layout_marginRight="50dp"
            android:background="@drawable/date" >
        </Button>
        </LinearLayout>

全球价值观:

Button btnCalendar;
EditText txtDate;
private int mYear, mMonth, mDay;

OnCreate:

btnCalendar = (Button) findViewById(R.id.btnCalendar);
    txtDate = (EditText) findViewById(R.id.txtDate);
    btnCalendar.setOnClickListener(this);

方法 :

 @Override
public void onClick(View v) {

    if (v == btnCalendar) {

        // Process to get Current Date
        final Calendar c = Calendar.getInstance();
        mYear = c.get(Calendar.YEAR);
        mMonth = c.get(Calendar.MONTH);
        mDay …