Android中怎么利用组合控件复用布局-创新互联
本篇文章为大家展示了Android中怎么利用组合控件复用布局,内容简明扼要并且容易理解,绝对能使你眼前一亮,通过这篇文章的详细介绍希望你能有所收获。
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2.定义自定义属性
3.自定义一个View继承ViewGroup子类,这里我们继承RelativeLayout。
public class CustomTitleBar extends RelativeLayout { private Button titleBarLeftBtn; private Button titleBarRightBtn; private TextView titleBarTitle; public CustomTitleBar(Context context) { super(context); } public CustomTitleBar(Context context, AttributeSet attrs) { super(context, attrs); LayoutInflater.from(context).inflate(R.layout.layout_custom_titlebar,this,true); titleBarLeftBtn = (Button) findViewById(R.id.title_bar_left); titleBarRightBtn = (Button) findViewById(R.id.title_bar_right); titleBarTitle = (TextView) findViewById(R.id.title_bar_title); TypedArray typedArray=context.obtainStyledAttributes(attrs,R.styleable.CustomTitleBar); if(typedArray!=null){ //titleBar背景色 int titleBarBackGround=typedArray.getResourceId(R.styleable.CustomTitleBar_title_background_color, Color.BLUE); setBackgroundColor(titleBarBackGround); //获取是否要显示左边按钮 boolean leftButtonVisible = typedArray.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 = typedArray.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 = typedArray.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 = typedArray.getResourceId(R.styleable.CustomTitleBar_left_button_drawable, R.mipmap.titlebar_back_icon); if (leftButtonDrawable != -1) { titleBarLeftBtn.setBackgroundResource(leftButtonDrawable); } } //先获取标题是否要显示图片icon int titleTextDrawable = typedArray.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 = typedArray.getString(R.styleable.CustomTitleBar_title_text); if (!TextUtils.isEmpty(titleText)) { titleBarTitle.setText(titleText); } //获取标题显示颜色 int titleTextColor = typedArray.getColor(R.styleable.CustomTitleBar_title_text_color, Color.WHITE); titleBarTitle.setTextColor(titleTextColor); } //获取是否要显示右边按钮 boolean rightButtonVisible = typedArray.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 = typedArray.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 = typedArray.getColor(R.styleable.CustomTitleBar_right_button_text_color, Color.BLUE); 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 = typedArray.getResourceId(R.styleable.CustomTitleBar_right_button_drawable, -1); if (rightButtonDrawable != -1) { titleBarRightBtn.setBackgroundResource(rightButtonDrawable); } } typedArray.recycle(); } } public void setTitleClickListener(OnClickListener onClickListener) { if (onClickListener != null) { titleBarLeftBtn.setOnClickListener(onClickListener); titleBarRightBtn.setOnClickListener(onClickListener); } } public Button getTitleBarLeftBtn() { return titleBarLeftBtn; } public Button getTitleBarRightBtn() { return titleBarRightBtn; } public TextView getTitleBarTitle() { return titleBarTitle; } }
4.正确地使用它
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