Question

所以我想制作我的Drop-down微调器＆lt; item＆gt;进入MYSQL数据库。当这个＆lt; item＆gt;进入数据库，我想要列表＆lt; item＆gt;从下拉列表中消失。在我的情况下是否可能？因为我从strings.xml中插入了我的微调器项。

这是strings.xml

<resources>
<string name="app_name">Konser Futsal</string>

<!-- Strings related to login -->
<string name="prompt_email">Email</string>
<string name="prompt_password">Password (optional)</string>
<string name="action_sign_in">Sign in or register</string>
<string name="action_sign_in_short">Sign in</string>
<string name="error_invalid_email">This email address is invalid</string>
<string name="error_invalid_password">This password is too short</string>
<string name="error_incorrect_password">This password is incorrect</string>
<string name="error_field_required">This field is required</string>
<string name="permission_rationale">"Contacts permissions are needed for providing email
    completions."

</string>

<string-array name="android_layout_arrays">
    <item>Pilih Jam</item>
    <item>10:00</item> 
    <item>11:00</item>
    <item>12:00</item>
    <item>13:00</item>
    <item>14:00</item>   // i want to make these item get into MySQL DB. 
    <item>15:00</item>   // when the "submit" button is clicked . 
    <item>16:00</item>   // then after submitted,the next time
    <item>17:00</item>   // they check,the previous selected item is
    <item>18:00</item>   // disappear from the drop-down list
    <item>19:00</item>
    <item>20:00</item>
    <item>21:00</item>
    <item>22:00</item>
    <item>23:00</item>
</string-array>

<string-array name="android_layout_arrays2">
    <item>Pilih Durasi</item>
    <item>1 jam</item>
    <item>2 jam</item>
    <item>3 jam</item>
</string-array>

这里是ReserveActivity.java代码

public class ReserveActivity extends AppCompatActivity {

private Spinner spinner1;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_reserve);


    spinner1 = (Spinner) findViewById(R.id.spinner);
    spinner1.setOnItemSelectedListener(new CustomOnItemSelectedListener());


}

public class CustomOnItemSelectedListener implements AdapterView.OnItemSelectedListener {

    String firstItem = String.valueOf(spinner1.getSelectedItem());

    public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
        if (firstItem.equals(String.valueOf(spinner1.getSelectedItem()))) {
            // ToDo when first item is selected
        } else {
            Toast.makeText(parent.getContext(),
                    "Kamu memilih : " + parent.getItemAtPosition(pos).toString(),
                    Toast.LENGTH_LONG).show();
        }
    }

    @Override
    public void onNothingSelected(AdapterView<?> arg) {

    }


}
}

或者我是否需要更改微调器的工作方式？因为我不知道如何将这些项目插入数据库并从下拉列表中消失。

Answer 1

Using .xml file through inserted an array :

                   <Spinner
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"
                            android:id="@+id/spinner"
                            android:entries="@array/android_layout_arrays" />

如何将下拉Spinners <item>插入MySQL数据库

1 个答案: