參考出處：http://www.cnblogs.com/net168/p/4237528.html

（會出現窗體洩漏has leaked window） 避免線上程中removeView

public class MyToast {
    boolean mShowTime;
    boolean mIsShow;
    WindowManager mWdm;
    Timer mTimer;
    View mToastView;
    WindowManager.LayoutParams mParams;


    public MyToast(Context context, String text, boolean showTime) {
        mShowTime = showTime;//記錄Toast的顯示長短型別
        mIsShow = false;//記錄當前Toast的內容是否已經在顯示
        mWdm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        mToastView = Toast.makeText(context, text, Toast.LENGTH_SHORT).getView();//通過Toast例項獲取當前android系統的預設Toast的View佈局
        mTimer = new Timer();
        setParams();
    }

    /**
     * 設定佈局引數
     */
    private void setParams() {
        mParams = new WindowManager.LayoutParams();
        mParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
        mParams.width = WindowManager.LayoutParams.WRAP_CONTENT;
        mParams.format = PixelFormat.TRANSLUCENT;
        mParams.windowAnimations = R.style.anim_view;//設定進入退出動畫效果
        mParams.type = WindowManager.LayoutParams.TYPE_TOAST;
        mParams.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
        mParams.gravity = Gravity.BOTTOM;//位置
        mParams.y = 50;
    }

    public static MyToast makeText(Context context, String text, boolean showTime) {
        MyToast result = new MyToast(context, text, showTime);
        return result;
    }

    /**
     * 此處修改 以免造成窗體洩漏
     */
    public void show() {
        if (!mIsShow) {
            mIsShow = true;
            mWdm.addView(mToastView, mParams);
            mTimer.schedule(new TimerTask() {
                @Override
                public void run() {
                    mHandler.sendEmptyMessage(1);
                }
            }, (long) (mShowTime ? 1500 : 1500));
        }
    }

    Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            mWdm.removeViewImmediate(mToastView);
            mIsShow = false;
            super.handleMessage(msg);
        }
    };
}