如何用代码制作SeekBar接口?

How to make SeekBar interface with code?

我在片段中创建了几个 SeekBar,在 java 文件中创建了一个 OnSeekBarChangeListener,但 xml 布局和 java 布局之间似乎存在无法解释的脱节文件。

java class

public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View root = inflater.inflate(R.layout.fragment_preferences, container, false);
    final SeekBar s1 = (SeekBar) root.findViewById(R.id.s1Bar);
    final TextView spicinessText = (TextView) root.findViewById(R.id.spicinessTxt);
    s1.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
            Toast.makeText(getContext(), String.valueOf(i), Toast.LENGTH_SHORT).show();
            spicinessText.setText("Spiciness " + String.valueOf(i));
        }

        @Override

        public void onStartTrackingTouch(SeekBar seekBar) {
        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
        }
    });



    return inflater.inflate(R.layout.fragment_preferences, container, false);
}

xml布局

<FrameLayout>

<!-- TODO: Update blank fragment layout -->

<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">

<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Spiciness"
    android:id="@+id/spicinessTxt"/>


<SeekBar
    android:id="@+id/s1Bar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />
<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Sourness"/>


<SeekBar
    android:id="@+id/seekBar4"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />
<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Sweet"
    android:id="@+id/sweet"/>


<SeekBar
    android:id="@+id/seekBar5"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />
<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="Salty"/>


<SeekBar
    android:id="@+id/seekBar6"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" />
<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text=""/>

我在外部设备上启动了该应用程序,但实际布局根本无法与 java 代码通信,尽管我很确定我已经正确地完成了所有操作。如果有人能看到我在这里犯的任何严重错误,将不胜感激。

这是您的查询的解决方案:

 public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) 
 { 
      // Inflate the layout for this fragment      
      View root = inflater.inflate(R.layout.fragment_preferences, container, false); 
      final SeekBar s1 = (SeekBar) root.findViewById(R.id.s1Bar); 
      final TextView spicinessText = (TextView) root.findViewById(R.id.spicinessTxt); 
      s1.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() 
      {
           @Override 
           public void onProgressChanged(SeekBar seekBar, int i, boolean b) 
           {
                 Toast.makeText(getContext(), String.valueOf(i), Toast.LENGTH_SHORT).show(); 
                spicinessText.setText("Spiciness " + String.valueOf(i)); 
           } 
           @Override 
           public void onStartTrackingTouch(SeekBar seekBar) 
           { } 
           @Override 
           public void onStopTrackingTouch(SeekBar seekBar) 
          { } 
      }); 
     return root;
  }

谢谢,编码愉快。