Android custom implementation of slideable buttons

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:andro
xmlns:tools="/tools"
android:
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context=".a3_.MainActivity">

<.a3_.MyToggleButton
 android:
 android:layout_width="wrap_content"
 android:layout_height="wrap_content" />

<.a3_.MyToggleButton
 android:
 android:layout_width="wrap_content"
 android:layout_height="wrap_content" />
</LinearLayout>

package .a3_;

import .;
import ;
import ;

public class MainActivity extends AppCompatActivity {

private MyToggleButton toggleButton;
private MyToggleButton toggleButton2;

@Override
protected void onCreate(Bundle savedInstanceState) {
 (savedInstanceState);
 setContentView(.activity_main);

 //Initialize the control toggleButton = (MyToggleButton) findViewById();
 //Set the status of the button (true);
 //Create a listener MyListener myListener = new MyListener();
 //Set up the monitoring (myListener);

 //Initialize the control toggleButton2 = (MyToggleButton) findViewById(.myToggle2);
 //Set the status of the button (true);
 //Create a listener MyListener myListener2 = new MyListener();
 //Set up the monitoring (myListener2);

}

//Create a listenerclass MyListener implements  {

 @Override
 public void onToggleStateChange(MyToggleButton button, boolean isToggleOn) {

  //Determine which button triggers the monitoring  switch (()) {
   case :
    (, isToggleOn ? "Open 1" : "Close 1", Toast.LENGTH_SHORT).show();
    break;
   case .myToggle2:
    (, isToggleOn ? "Open 2" : "Close 2", Toast.LENGTH_SHORT).show();
  }

 }
}
}

package .a3_;

import ;
import ;
import ;
import ;
import ;
import ;
import ;

/**
 * Created by Administrator on 2017.05.27.0027.
 */

public class MyToggleButton extends View {

private Bitmap bgBitmap;
private Bitmap slidebg;
private final int viewWidth;
private final int viewheight;
private float slidebgleft;
private final int slideWidth;
private final int slideMaxLeft;
//Set a member variable to determine the state of the switchprivate boolean toggleStste = false;
private boolean canChangeToggleState = false;

private onToggleStateChangedListener monToggleStateChangedListener = null;

//Create a monitor with the state of the switch changed, triggered when the state changes, otherwise it will not triggerpublic void setOnToggleStateChangedListener(onToggleStateChangedListener monToggleStateChangedListener) {
  = monToggleStateChangedListener;
}


public MyToggleButton(Context context, AttributeSet attrs) {
 super(context, attrs);
 //Set the background and slider resources of the button setBackgroundAndSlideResource(.toogle_background, .toogle_slidebg);
 //Get the height and width of the background viewWidth = ();
 viewheight = ();
 //The width and height of the background are the width and height of this custom button //Get the width of the slider slideWidth = ();
 //Calculate the maximum value on the right side of the slider slideMaxLeft = viewWidth - slideWidth;
}

//Define a method to show whether the button is on or offpublic void setToggleStste(boolean toggleStste) {
  = toggleStste;
 if (toggleStste) {
  slidebgleft = slideMaxLeft;
 } else {
  slidebgleft = 0;
 }
 //Repaint invalidate();
}

//Set the background and slider resources of the buttonprivate void setBackgroundAndSlideResource(int toogle_background, int toogle_slidebg) {
 bgBitmap = (getResources(), toogle_background);
 slidebg = (getResources(), toogle_slidebg);
}

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
//  (widthMeasureSpec, heightMeasureSpec);
 //Call setMeasuredDimension to draw the button area setMeasuredDimension(viewWidth, viewheight);
}

@Override
protected void onDraw(Canvas canvas) {

 //Rewrite drawBitmap and draw the background and slider of the control into the page (bgBitmap, 0, 0, null);
 drawSlide(canvas);

}

//Control slidebgleft to control the position of the sliderprivate void drawSlide(Canvas canvas) {
 //Limit the running interval of the slider to prevent the slider from moving outside the boundary if (slidebgleft < 0) {
  slidebgleft = 0;
 } else if (slidebgleft > slideMaxLeft) {
  slidebgleft = slideMaxLeft;
 }
 (slidebg, slidebgleft, 0, null);
 if (canChangeToggleState) {
  canChangeToggleState = false;
  //Record the status of the last switch  boolean lastToggleState = toggleStste;
  //Update the status of the switch according to the current slider position  if (slidebgleft == 0) {
   toggleStste = false;
  } else {
   toggleStste = true;
  }

  //If the current state is different from the previous state, the listening event will be triggered  if (lastToggleState != toggleStste && monToggleStateChangedListener != null) {
   (this, toggleStste);
  }
 }
}

//Set the button's touch event@Override
public boolean onTouchEvent(MotionEvent event) {
 switch (()) {
  case MotionEvent.ACTION_DOWN:
   slidebgleft = () - slideWidth / 2;
   break;
  case MotionEvent.ACTION_MOVE:
   slidebgleft = () - slideWidth / 2;
   break;
  case MotionEvent.ACTION_UP:
   if (() > viewWidth / 2) {
    slidebgleft = slideMaxLeft;
   } else {
    slidebgleft = 0;
   }
   //Only if the monitor can be triggered when the phone leaves the screen   canChangeToggleState = true;
   break;
 }
 //Draw repeatedly invalidate();
 return true;
}

interface onToggleStateChangedListener {
 void onToggleStateChange(MyToggleButton button, boolean isToggleOn);
}
}