自定义控件

https://www.cnblogs.com/android-blogs/p/5718496.html

 

TypedArray attributes = context.obtainStyledAttributes(attrs, R.styleable.CustomTitleBar);
        if (attributes != null) {
            //处理titleBar背景色
            int titleBarBackGround = attributes.getResourceId(R.styleable.CustomTitleBar_title_background_color, Color.GREEN);
            setBackgroundResource(titleBarBackGround);
            //先处理左边按钮
            //获取是否要显示左边按钮
            boolean leftButtonVisible = attributes.getBoolean(R.styleable.CustomTitleBar_left_button_visible, true);
            if (leftButtonVisible) {
                titleBarLeftBtn.setVisibility(View.VISIBLE);
            } else {
                titleBarLeftBtn.setVisibility(View.INVISIBLE);
            }
            //设置左边按钮的文字
            String leftButtonText = attributes.getString(R.styleable.CustomTitleBar_left_button_text);
            if (!TextUtils.isEmpty(leftButtonText)) {
                titleBarLeftBtn.setText(leftButtonText);
                //设置左边按钮文字颜色
                int leftButtonTextColor = attributes.getColor(R.styleable.CustomTitleBar_left_button_text_color, Color.WHITE);
                titleBarLeftBtn.setTextColor(leftButtonTextColor);
            } else {
                //设置左边图片icon 这里是二选一 要么只能是文字 要么只能是图片
                int leftButtonDrawable = attributes.getResourceId(R.styleable.CustomTitleBar_left_button_drawable, R.mipmap.titlebar_back_icon);
                if (leftButtonDrawable != -1) {
                    titleBarLeftBtn.setBackgroundResource(leftButtonDrawable);
                }
            }

            //处理标题
            //先获取标题是否要显示图片icon
            int titleTextDrawable = attributes.getResourceId(R.styleable.CustomTitleBar_title_text_drawable, -1);
            if (titleTextDrawable != -1) {
                titleBarTitle.setBackgroundResource(titleTextDrawable);
            } else {
                //如果不是图片标题 则获取文字标题
                String titleText = attributes.getString(R.styleable.CustomTitleBar_title_text);
                if (!TextUtils.isEmpty(titleText)) {
                    titleBarTitle.setText(titleText);
                }
                //获取标题显示颜色
                int titleTextColor = attributes.getColor(R.styleable.CustomTitleBar_title_text_color, Color.WHITE);
                titleBarTitle.setTextColor(titleTextColor);
            }

            //先处理右边按钮
            //获取是否要显示右边按钮
            boolean rightButtonVisible = attributes.getBoolean(R.styleable.CustomTitleBar_right_button_visible, true);
            if (rightButtonVisible) {
                titleBarRightBtn.setVisibility(View.VISIBLE);
            } else {
                titleBarRightBtn.setVisibility(View.INVISIBLE);
            }
            //设置右边按钮的文字
            String rightButtonText = attributes.getString(R.styleable.CustomTitleBar_right_button_text);
            if (!TextUtils.isEmpty(rightButtonText)) {
                titleBarRightBtn.setText(rightButtonText);
                //设置右边按钮文字颜色
                int rightButtonTextColor = attributes.getColor(R.styleable.CustomTitleBar_right_button_text_color, Color.WHITE);
                titleBarRightBtn.setTextColor(rightButtonTextColor);
            } else {
                //设置右边图片icon 这里是二选一 要么只能是文字 要么只能是图片
                int rightButtonDrawable = attributes.getResourceId(R.styleable.CustomTitleBar_right_button_drawable, -1);
                if (rightButtonDrawable != -1) {
                    titleBarRightBtn.setBackgroundResource(rightButtonDrawable);
                }
            }
            attributes.recycle();
        }