Toast的Window创建过程

// 初始化Toast对象
Toast toast = Toast.makeText(context, "这是一个Toast消息", Toast.LENGTH_SHORT);

// 获取WindowManager
WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);

// 创建自定义View
LinearLayout layout = new LinearLayout(context);
layout.setOrientation(LinearLayout.VERTICAL);
TextView textView = new TextView(context);
textView.setText("自定义Toast");
layout.addView(textView);

// 设置LayoutParams
WindowManager.LayoutParams params = new WindowManager.LayoutParams(
        WindowManager.LayoutParams.WRAP_CONTENT,
        WindowManager.LayoutParams.WRAP_CONTENT,
        WindowManager.LayoutParams.TYPE_TOAST,
        WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE,
        PixelFormat.TRANSLUCENT);
params.gravity = Gravity.CENTER;

// 添加View到WindowManager
windowManager.addView(layout, params);

// 显示Toast
toast.show();

// 设置显示时间后移除View
new Handler().postDelayed(new Runnable() {
    @Override
    public void run() {
        windowManager.removeView(layout);
    }
}, toast.getDuration() * 1000L);