自定义侧滑菜单

自定义fragment
：
public class MyDrawer extends FrameLayout {
private LinearLayout content;
private LinearLayout menu;
private int width=400;
//系统存值
PointF pointF=new PointF();
int x;
int y;

public MyDrawer(Context context) {
    super(context);
    init();
}

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

public MyDrawer(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    init();
}
public void addViewContont(View view){
    if (view==null){
        return;
    }
    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);

    view.setLayoutParams(params);
    content.addView(view);
}

public void addViewMenu(View view){
    if (view==null){
        return;
    }
    LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);

    view.setLayoutParams(params);
    menu.addView(view);
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
    super.onLayout(changed, left, top, right, bottom);
}
public  void init(){
    //主菜单
     content=new LinearLayout(getContext());
    FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
    content.setBackgroundColor(Color.GREEN);
    content.setOrientation(LinearLayout.VERTICAL);
    content.setLayoutParams(params);
     //侧滑菜单
    menu=new LinearLayout(getContext());
    FrameLayout.LayoutParams pr = new FrameLayout.LayoutParams(width, ViewGroup.LayoutParams.MATCH_PARENT);
    menu.setBackgroundColor(Color.RED);
    menu.setOrientation(LinearLayout.VERTICAL);
    pr.leftMargin-=width;
    menu.setLayoutParams(pr);



    addView(content);
    addView(menu);
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
}

@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
    return super.dispatchTouchEvent(ev);
}

@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
    switch (ev.getAction()){
        case  MotionEvent.ACTION_DOWN:
            pointF.x = ev.getX();
            pointF.y = ev.getY();
            break;
        case  MotionEvent.ACTION_MOVE:
            float a = ev.getX()-pointF.x;
            float b = ev.getY()-pointF.y;
            if (Math.abs(a)>Math.abs(2*b)){
                return  true;
            }
            break;
        case  MotionEvent.ACTION_UP:

            break;
    }
    return false;
}

@Override
public boolean onTouchEvent(MotionEvent event) {
    switch (event.getAction()){
        case  MotionEvent.ACTION_DOWN:
            pointF.x = event.getX();
            pointF.y = event.getY();
            break;
        case  MotionEvent.ACTION_MOVE:
            moveDrawer(event);
            break;
        case  MotionEvent.ACTION_UP:

            break;
    }
    return true;
}
private  boolean moveDrawer(MotionEvent event){
    if (Math.abs(pointF.x-event.getX())>5){
        int x= (int) (event.getX()-pointF.x);
        FrameLayout.LayoutParams layoutParams = (LayoutParams) menu.getLayoutParams();
        int nowx=layoutParams.leftMargin;
        layoutParams.leftMargin=nowx+x;

        if (layoutParams.leftMargin>0){
            layoutParams.leftMargin=0;
        }
        if (layoutParams.leftMargin<-width){
            layoutParams.leftMargin=-width;
        }

        menu.requestLayout();
        pointF.x=event.getX();
        pointF.y=event.getY();
    }
    return  true;
}

}

activity代码：
private MyDrawer md;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    initView();
}

private void initView() {
    md = (MyDrawer) findViewById(R.id.md);
    View view = LayoutInflater.from(this).inflate(R.layout.item, null);
    md.addViewContont(view);
}