Android，SeekBar 在对话框中

问题描述

我想在我的应用程序中使用带有搜索栏的对话框.但我真的不知道该怎么做，因为我缺乏使用 android 的经验.

I would like to use a dialog with a seekbar in my application. But I don't really know how to do it because I lack experience with android.

因此，当您按下按钮时:应该会出现一个带有搜索栏的对话框，用户可以输入一个值，然后按 OK 按钮.

So, when you press a button: a dialog should come up, with a seekbar and the user is able to enter a value and then press OK-button.

我现在的代码是developer.android的默认代码:

The code I have at the moment is the default code by developer.android:

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Are you sure you want to exit?")
        .setCancelable(false)
       .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
           public void onClick(DialogInterface dialog, int id) {
                MyActivity.this.finish();
       }
   })
   .setNegativeButton("No", new DialogInterface.OnClickListener() {
       public void onClick(DialogInterface dialog, int id) {
            dialog.cancel();
       }
   });
AlertDialog alert = builder.create();

如何添加SeekBar?

谢谢！

推荐答案

也许你可以考虑创建一个自定义对话框；它需要更多的工作，但它通常对我有用；)为您的对话框创建一个新的布局文件(例如 your_dialog.xml):

Maybe you could think of create a custom dialog; it requires more work but it usually works for me ;) Create a new layout file for your dialog (say, your_dialog.xml):

<RelativeLayout
android:id="@+id/your_dialog_root_element"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>

<SeekBar
    android:id="@+id/your_dialog_seekbar"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    >
</SeekBar>

<Button
    android:id="@+id/your_dialog_button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    >
</Button>

然后，在你的活动中:

Dialog yourDialog = new Dialog(this);
LayoutInflater inflater = (LayoutInflater)this.getSystemService(LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.your_dialog, (ViewGroup)findViewById(R.id.your_dialog_root_element));
yourDialog.setContentView(layout);

因此，您可以对元素进行如下操作:

Thus, you can operate on your element as follows:

Button yourDialogButton = (Button)layout.findViewById(R.id.your_dialog_button);
SeekBar yourDialogSeekBar = (SeekBar)layout.findViewById(R.id.your_dialog_seekbar);
// ...

等等，设置按钮和搜索栏的监听器.

and so on, to set listeners for button and seekbar.

seekbar onchangelistener 应该如下:

The seekbar onchangelistener should be as follows:

OnSeekBarChangeListener yourSeekBarListener = new OnSeekBarChangeListener() {
    @Override
    public void onStopTrackingTouch(SeekBar seekBar) {
            //add code here
    }

    @Override
    public void onStartTrackingTouch(SeekBar seekBar) {
            //add code here
    }

    @Override
    public void onProgressChanged(SeekBar seekBark, int progress, boolean fromUser) {
            //add code here
    }
 };
 yourDialogSeekBar.setOnSeekBarChangeListener(yourSeekBarListener);

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