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シーク バーを垂直にし、進行状況とサム イメージを変更して、シーク バーをカスタマイズしようとしています。しかし、進行状況の画像を設定しようとすると、完全な画像ではなく、非常に薄い画像が表示されます。これはどのように達成できますか？

XML ファイル

 <com.example.verticalseekbar.VerticalSeekbar
    android:id="@+id/seekbar"
    android:layout_width="300dip"
    android:layout_height="116dp"
    android:layout_marginRight="10dip"
    android:padding="8dp"
    android:progressDrawable="@drawable/panel"
    android:thumb="@drawable/thumb1" >
</com.example.verticalseekbar.VerticalSeekbar>
4

2 に答える 2

1

これを行うには、SeekBar をカスタマイズします。SeekBar をカスタマイズする前に、以下について知っておく必要があります

1.Layer List
2.Animation List
3.Selector

これについては、完全なチュートリアルを投稿しました。これが大いに役立つことを願っています。VerticalSeekBar の場合、次のコードを使用します

public class VerticalSeekBar extends AbsVerticalSeekBar {

    /**
     * A callback that notifies clients when the progress level has been
     * changed. This includes changes that were initiated by the user through a
     * touch gesture or arrow key/trackball as well as changes that were initiated
     * programmatically.
     */
    public interface OnSeekBarChangeListener {

        /**
         * Notification that the progress level has changed. Clients can use the fromUser parameter
         * to distinguish user-initiated changes from those that occurred programmatically.
         *
         * @param seekBar The SeekBar whose progress has changed
         * @param progress The current progress level. This will be in the range 0..max where max
         *        was set by {@link ProgressBar#setMax(int)}. (The default value for max is 100.)
         * @param fromUser True if the progress change was initiated by the user.
         */
        void onProgressChanged(VerticalSeekBar seekBar, int progress, boolean fromUser);

        /**
         * Notification that the user has started a touch gesture. Clients may want to use this
         * to disable advancing the seekbar.
         * @param seekBar The SeekBar in which the touch gesture began
         */
        void onStartTrackingTouch(VerticalSeekBar seekBar);

        /**
         * Notification that the user has finished a touch gesture. Clients may want to use this
         * to re-enable advancing the seekbar.
         * @param seekBar The SeekBar in which the touch gesture began
         */
        void onStopTrackingTouch(VerticalSeekBar seekBar);
    }

    private OnSeekBarChangeListener mOnSeekBarChangeListener;

    public VerticalSeekBar(Context context) {
        this(context, null);
    }

    public VerticalSeekBar(Context context, AttributeSet attrs) {
        this(context, attrs, android.R.attr.seekBarStyle);
    }

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

    @Override
    void onProgressRefresh(float scale, boolean fromUser) {
        super.onProgressRefresh(scale, fromUser);

        if (mOnSeekBarChangeListener != null) {
            mOnSeekBarChangeListener.onProgressChanged(this, getProgress(), fromUser);
        }
    }

    /**
     * Sets a listener to receive notifications of changes to the SeekBar's progress level. Also
     * provides notifications of when the user starts and stops a touch gesture within the SeekBar.
     *
     * @param l The seek bar notification listener
     *
     * @see SeekBar.OnSeekBarChangeListener
     */
    public void setOnSeekBarChangeListener(OnSeekBarChangeListener l) {
        mOnSeekBarChangeListener = l;
    }

    @Override
    void onStartTrackingTouch() {
        if (mOnSeekBarChangeListener != null) {
            mOnSeekBarChangeListener.onStartTrackingTouch(this);
        }
    }

    @Override
    void onStopTrackingTouch() {
        if (mOnSeekBarChangeListener != null) {
            mOnSeekBarChangeListener.onStopTrackingTouch(this);
        }
    }

}
于 2013-04-27T12:52:08.613 に答える
0

このカスタマイズした SeekBar を使用します。

package com.tt.droidtracker.widget;

public class VerticalSeekBar extends SeekBar {

public VerticalSeekBar(Context context) {
    super(context);
}

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

public VerticalSeekBar(Context context, AttributeSet attrs) {
    super(context, attrs);
}

protected void onSizeChanged(int w, int h, int oldw, int oldh) {
    super.onSizeChanged(h, w, oldh, oldw);
}

@Override
protected synchronized void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    super.onMeasure(heightMeasureSpec, widthMeasureSpec);
    setMeasuredDimension(getMeasuredHeight(), getMeasuredWidth());
}

protected void onDraw(Canvas c) {
    c.rotate(-90);
    c.translate(-getHeight(),0);

    super.onDraw(c);
}

@Override
public boolean onTouchEvent(MotionEvent event) {
    if (!isEnabled()) {
        return false;
    }

    switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN:
        case MotionEvent.ACTION_MOVE:
        case MotionEvent.ACTION_UP:
            int i=0;
            i=getMax() - (int) (getMax() * event.getY() / getHeight());
            setProgress(i);
            Log.i("Progress",getProgress()+"");
            onSizeChanged(getWidth(), getHeight(), 0, 0);
            break;

        case MotionEvent.ACTION_CANCEL:
            break;
    }
    return true;
}

}

この XML コードは、パッケージ名とともに XML で使用されます

<com.tt.droidtracker.widget.VerticalSeekBar
    android:id="@+id/Seekbar"
    android:layout_width="wrap_content"
    android:layout_height="300dip"
    android:layout_marginRight="10dip"
    android:padding="8dp"
    android:progressDrawable="@drawable/seekbar_progress"
    android:thumb="@drawable/img_seek_handler" />

お役に立てば幸いです。

于 2013-04-27T12:56:45.870 に答える