如何在android中制作自定义搜索栏？

Question

我想让客户寻找像这样的图像:

我检查了这个和这个.如果有人对此有任何想法..请分享它.谢谢

Answer 1

如果我理解正确,您想要在沿着球体移动的实际滑块上方创建一个数字值.

您可以做的一件事是通过将文本"合并"到orb图像的可绘制文件上,在滑块的实际图像上方写入文本.

我假设您使用的是原始问题中提供的第一个教程

public class CustomSeekBar extends Activity {
  SeekBar mybar;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_custom_seek_bar);
        mybar = (SeekBar) findViewById(R.id.seekBar1);

        mybar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

      @Override
      public void onStopTrackingTouch(SeekBar seekBar) {

        //add here your implementation
      }

      @Override
      public void onStartTrackingTouch(SeekBar seekBar) {

        //add here your implementation
      }

      @Override
      public void onProgressChanged(SeekBar seekBar, int progress,
          boolean fromUser) {
            int value = seekBar.getProgress(); //this is the value of the progress bar (1-100)
            //value = progress; //this should also work
            String valueString = value + ""; //this is the string that will be put above the slider
            seekBar.setThumb(writeOnDrawable(R.drawable.thumbler_small, value));        
      }
    });
    }

    public BitmapDrawable writeOnDrawable(int drawableId, String text){

    Bitmap bm = BitmapFactory.decodeResource(getResources(), drawableId).copy(Bitmap.Config.ARGB_8888, true);

    Paint paint = new Paint(); 
    paint.setStyle(Style.FILL);  
    paint.setColor(Color.BLACK); //Change this if you want other color of text
    paint.setTextSize(20); //Change this if you want bigger/smaller font

    Canvas canvas = new Canvas(bm);
    canvas.drawText(text, 0, bm.getHeight()/2, paint); //Change the position of the text here

    return new BitmapDrawable(bm);
}
} 

这需要从您的资源中抽取一些文本,然后返回新的drawable.用于seekBar.getProgress();从搜索栏获取所需的值.

我建议稍微清理一下代码,因为现在每次触摸搜索栏时都会创建一个新的绘图对象.

你需要做更多的东西,只有当你点击orb时才能使它工作......

Answer 2

XML代码

 <SeekBar
    android:id="@+id/seekBar1"
    android:layout_width="match_parent"
    android:layout_height="wrap_content" 
    android:progressDrawable="@drawable/seek_bar"
    android:paddingLeft="15dp"
    android:paddingRight="15dp"
    android:thumb="@drawable/thumbler_small"
    android:indeterminate="false" />

seek_bar.xml

 <?xml version="1.0" encoding="UTF-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
    <item
        android:id="@+android:id/SecondaryProgress"
        android:drawable="@drawable/first"/>
    <item
        android:id="@+android:id/progress"
        android:drawable="@drawable/second"/>
</layer-list>

第一个drawable是空的或显示不是颜色满的区域.

第二个drawable是填充或颜色全区域.

这个链接可以帮到你.

Answer 3

为什么不写自定义搜索栏视图.

下面是一些示例代码,用于将文本放在搜索栏拇指滑块的中间,文本随滑块移动.应该很容易适应滑块顶部的打印文本.

public class CustomSeekBar extends SeekBar {

private Paint textPaint;

private Rect textBounds = new Rect();

private String text = "";


public CustomSeekBar(Context context) {
    super(context);
    textPaint = new Paint();
    textPaint.setColor(Color.WHITE);

}

public CustomSeekBar(Context context, AttributeSet attrs) {
    super(context, attrs);
    textPaint = new Paint();
    textPaint.setColor(Color.WHITE);

}

public CustomSeekBar(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);


    textPaint = new Paint();
    textPaint.setColor(Color.WHITE);
        }

@Override
protected synchronized void onDraw(Canvas canvas) {
    // First draw the regular progress bar, then custom draw our text
    super.onDraw(canvas);

    // Now progress position and convert to text.
    text = Integer.toString(getProgress());

    // Now get size of seek bar.
    float width = getWidth();
    float height = getHeight();

    // Set text size.
    textPaint.setTextSize((height * 3) / 4);
    // Get size of text.
    textPaint.getTextBounds(text, 0, text.length(), textBounds);

    // Calculate where to start printing text.
    float position = (width / getMax()) * getProgress();

    // Get start and end points of where text will be printed.
    float textXStart = position - textBounds.centerX();
    float textXEnd = position + textBounds.centerX();

    // Check does not start drawing outside seek bar.
    if(textXStart < 0) textXStart = 0; 

    if(textXEnd > width)
        textXStart -= (textXEnd - width);

    // Calculate y text print position.
    float yPosition = (height / 2) - textBounds.centerY(); //- (textBounds.bottom / 2);

    canvas.drawText(text, textXStart, yPosition, textPaint);
}

public synchronized void setTextColor(int color) {
    super.drawableStateChanged();
    textPaint.setColor(color);
    drawableStateChanged();
}

}

我希望这对你有用.