Question

当这个过程正常工作时，我想制作一个按钮来保存/打印/显示2个微调器中的名称。

执行用户名时将按下此按钮。例如：

当项目==琳达时，琳达按下了按钮。直接按钮将在spinner1上显示/打印Linda的名字。
其他用户也会遇到同样的情况。并且名称将直接保存在后续的微调器（Spinner2）中。

这是我的代码......

MainProgram（主程序）

此主程序系统用于循环名称。

public boolean onOptionsItemSelected(MenuItem item) {
    Log.i(TAG, "Menu Item selected " + item);
    if (item == Linda) {
        variabel.setViewMode(ClassOne.Object1);
        new Thread(new Runnable(){
        public void run() {
        try {
        Thread.sleep(5000);
        onOptionsItemSelected(David);}
        catch (Exception ex){}}
        }).start();

    } else if (item == David) {
            variabel.setViewMode(ClassOne.Object2);
            new Thread(new Runnable(){
            public void run() {
            try {
            Thread.sleep(5000);
            onOptionsItemSelected(Samuel);}
            catch (Exception ex){}}
            }).start();

    } else if (item == Samuel) {
            variabel.setViewMode(ClassOne.Object3);
          new Thread(new Runnable(){
          public void run() {
          try {
          Thread.sleep(5000);
          onOptionsItemSelected(Linda);}
          catch (Exception ex){}}
          }).start();
      }

SpinnerProgram

这是我的代码......

private Spinner spinner1, spinner2;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    addListenerOnButton();
    addListenerOnSpinnerItemSelection();

}

public void addListenerOnSpinnerItemSelection() {

    spinner1 = (Spinner) findViewById(R.id.spinner1);
    spinner1.setOnItemSelectedListener(new CustomOnItemSelectedListener());
    spinner2 = (Spinner) findViewById(R.id.spinner2);
    spinner2.setOnItemSelectedListener(new CustomOnItemSelectedListener());

// get the selected dropdown list value
public void addListenerOnButton() {

    spinner1 = (Spinner) findViewById(R.id.spinner1);
    spinner2 = (Spinner) findViewById(R.id.spinner2);

public void onClick(View v) {
/* get names when button stop on looping process and print the names in spinners*/
            String name1 = String.valueOf(spinner1.getSelectedItem());
            String name2 = String.valueOf(spinner2.getSelectedItem());
            String print_name = getName(name1);
            String print_name = getName(name2);

public String getName(String name) {
        String value = "0";
        if (name.equalsIgnoreCase("Linda")) {
            value = "0";
        } else if (name.equalsIgnoreCase("David")) {
            value = "1";
        } else if (name.equalsIgnoreCase("Samuel")) {
            value = "2"; }

STRING.XML

 <string-array name="names">
    <item>Linda</item>
    <item>David</item>
    <item>Samuel</item>

我的问题：

如何创建按钮，我应该在哪里放置可以直接在旋转器中打印/显示所选名称的按钮？

Answer 1

我不确定这正是你想要的，但也许它至少可以帮助我通过你的评论弄明白。

main.xml 布局：

<LinearLayout
    android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >

<Spinner android:id="@+id/spinner1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:entries="@array/names" />

<Spinner android:id="@+id/spinner2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_weight="1"
    android:entries="@array/names" />

</LinearLayout>

<Button android:id="@+id/button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Choose" />

</LinearLayout>

<强> MainActivity

 public class MainActivity extends Activity implements OnClickListener
 {
private Button button;
private Spinner spinner1, spinner2;

private long startTime = 0;
private int elapsed = 0;
private final int TIMEOUT = 3;


@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    button = (Button) findViewById(R.id.button);
    spinner1 = (Spinner) findViewById(R.id.spinner1);
    spinner2 = (Spinner) findViewById(R.id.spinner2);

    button.setOnClickListener(this);

    startTime = System.currentTimeMillis();
    handler.postDelayed(run, 0);

}

@Override
public void onClick(View v)
{
    handler.removeCallbacks(run);
    spinner2.setSelection(spinner1.getSelectedItemPosition());
}

final Handler handler = new Handler();
Runnable run = new Runnable()
{
    @Override
    public void run()
    {
        long millis = System.currentTimeMillis() - startTime;
        int seconds = (int) (millis / 1000);
        seconds = seconds % 60;

        elapsed = TIMEOUT - seconds;

        if (elapsed == 0)
        {
            incrementSpinner();
            startTime = System.currentTimeMillis();
            handler.postDelayed(this, 0);               
        }
        else
        {
            handler.postDelayed(this, 500);             
        }
    }
};  

private void incrementSpinner()
{
    int selPos = spinner1.getSelectedItemPosition();

    if(selPos == spinner1.getCount() - 1)
    {
        selPos = 0;
    }
    else
    {
        selPos++;
    }

    spinner1.setSelection(selPos);
}

}

如何在循环系统中使用“OK”按钮？

1 个答案: