现在,几乎在每一个APP顶部都有一个标题栏,可能会用ActionBar,也可能自己写一个xml来添加标题栏中的控件。在以往自己做项目时大多使用后者来写一个标题栏,然后使用include包含在每一个页面布局中。今天,试下使用自定义属性来自定义一个标题栏。
一般的标题栏都分为三个模块:左侧、标题、右侧,所以我们自定义的标题栏中允许用户添加左侧文字(或图片)、标题、右侧文字(或图片),并且提供相应接口去调用点击事件。这里的Demo只是一个小小的例子,后面可以根据所需修改这个标题栏。
详细看下代码,功能还很少,也很简单..
首先,继承下RelativeLayout,然后在其中加入我们所需的控件:
/** * 自定义标题栏 * @author AA * @Date 2015-01-19 */ public class CustomTitleBar extends RelativeLayout { /** 文字 */ private String mLeftText, mTitleText, mRightText; /** 文字大小 */ private float mAmboTextSize, mTitleTextSize; /** 文字颜色 */ private int mTextColor; /** 图片 */ private int mLeftImage, mRightImage; /** 是否可见 */ private boolean mLeftVisible, mRightVisible; /** 左边、标题、右边 */ private TextView mLeftTextView, mTitleTextView, mRightTextView; private ImageView mLeftImageView, mRightImageView; /** 标题栏视图参数 */ private LayoutParams mLeftParams, mTitleParams, mRightParams; /** 自定义点击监听器 */ private TitleBarClickListener mTitleBarClickListener; public CustomTitleBar(Context context) { this(context, null); } public CustomTitleBar(Context context, AttributeSet attrs) { this(context, attrs, 0); } public CustomTitleBar(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); //获得自定义属性值 getTypedArray(context, attrs); //创建LayoutParams,并且设置对齐方式 mLeftParams = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); mLeftParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT, TRUE); mLeftParams.addRule(RelativeLayout.CENTER_VERTICAL, TRUE); mTitleParams = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.MATCH_PARENT); mTitleParams.addRule(RelativeLayout.CENTER_IN_PARENT, TRUE); mRightParams = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT); mRightParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, TRUE); mRightParams.addRule(RelativeLayout.CENTER_VERTICAL, TRUE); //左边文字 if(StringUtils.isNotEmpty(mLeftText) && mLeftVisible) { mLeftTextView = new TextView(context); mLeftTextView.setText(mLeftText); mLeftTextView.setTextSize(mAmboTextSize); mLeftTextView.setTextColor(mTextColor); addView(mLeftTextView, mLeftParams); mLeftTextView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if(mTitleBarClickListener != null) { //调用接口中方法 mTitleBarClickListener.onLeftClickListener(); } } }); } //右边文字 if(StringUtils.isNotEmpty(mRightText) && mRightVisible){ mRightTextView = new TextView(context); mRightTextView.setText(mRightText); mRightTextView.setTextSize(mAmboTextSize); mRightTextView.setTextColor(mTextColor); addView(mRightTextView, mRightParams); mRightTextView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if(mTitleBarClickListener != null) { mTitleBarClickListener.onRightClickListener(); } } }); } //标题文字 if(StringUtils.isNotEmpty(mTitleText)) { mTitleTextView = new TextView(context); mTitleTextView.setText(mTitleText); mTitleTextView.setTextSize(mTitleTextSize); mTitleTextView.setGravity(Gravity.CENTER); mTitleTextView.setTextColor(mTextColor); addView(mTitleTextView, mTitleParams); } //左边图片按钮 if(mLeftImage > 0 && mLeftVisible) { mLeftImageView = new ImageView(context); mLeftImageView.setImageResource(mLeftImage); addView(mLeftImageView, mLeftParams); mLeftImageView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if(mTitleBarClickListener != null) { mTitleBarClickListener.onLeftClickListener(); } } }); } //右边图片按钮 if(mRightImage > 0 && mRightVisible) { mRightImageView = new ImageView(context); mRightImageView.setImageResource(mRightImage); addView(mRightImageView, mRightParams); mRightImageView.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if(mTitleBarClickListener != null) { mTitleBarClickListener.onRightClickListener(); } } }); } } /** * 获得自定义属性值 * @param context * @param attrs */ private void getTypedArray(Context context, AttributeSet attrs) { TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.CustomTitleBar); int count = ta.getIndexCount(); for(int i=0; i<count; i++) { int attr = ta.getIndex(i); switch (attr) { case R.styleable.CustomTitleBar_leftText: mLeftText = ta.getString(attr); break; case R.styleable.CustomTitleBar_titleText: mTitleText = ta.getString(attr); break; case R.styleable.CustomTitleBar_rightText: mRightText = ta.getString(attr); break; case R.styleable.CustomTitleBar_amboTextSize: mAmboTextSize = DisplayUtils.px2sp(context, ta.getDimensionPixelSize(attr, 12)); break; case R.styleable.CustomTitleBar_titleTextSize: mTitleTextSize = DisplayUtils.px2sp(context, ta.getDimensionPixelSize(attr, 16)); break; case R.styleable.CustomTitleBar_textColor: mTextColor = ta.getColor(attr, Color.BLACK); break; case R.styleable.CustomTitleBar_leftVisible: mLeftVisible = ta.getBoolean(attr, false); break; case R.styleable.CustomTitleBar_rightVisible: mRightVisible = ta.getBoolean(attr, false); break; case R.styleable.CustomTitleBar_leftImage: mLeftImage = ta.getResourceId(attr, 0); break; case R.styleable.CustomTitleBar_rightImage: mRightImage = ta.getResourceId(attr, 0); break; } } ta.recycle(); } /** * 设置点击监听事件 * @param listener */ public void setOnTitleBarClickListener(TitleBarClickListener listener) { this.mTitleBarClickListener = listener; } /** * 设置左侧文字是否可见 * @param visible */ public void setLeftTextVisible(boolean visible) { this.mLeftTextView.setVisibility(visible ? View.VISIBLE : View.GONE); } /** * 设置右侧文字是否可见 * @param visible */ public void setRightTextVisible(boolean visible) { this.mRightTextView.setVisibility(visible ? View.VISIBLE : View.GONE); } /** * 设置左侧图片是否可见 * @param visible */ public void setLeftImageVisible(boolean visible) { this.mLeftImageView.setVisibility(visible ? View.VISIBLE : View.GONE); } /** * 设置右侧图片是否可见 * @param visible */ public void setRightImageVisible(boolean visible) { this.mRightImageView.setVisibility(visible ? View.VISIBLE : View.GONE); } /** * 设置左侧文字 * @param text */ public void setLeftText(String text) { this.mLeftTextView.setText(text); } /** * 设置标题文字 * @param text */ public void setTitleText(String text) { this.mTitleTextView.setText(text); } /** * 设置右侧文字 * @param text */ public void setRightText(String text) { this.mRightTextView.setText(text); } /** * 设置左侧文字大小 * @param textSize */ public void setLeftTextSize(float textSize) { this.mLeftTextView.setTextSize(textSize); } /** * 设置标题文字大小 * @param textSize */ public void setTitleTextSize(float textSize) { this.mTitleTextView.setTextSize(textSize); } /** * 设置右侧文字大小 * @param textSize */ public void setRightTextSize(float textSize) { this.mRightTextView.setTextSize(textSize); } /** * 设置左侧文字颜色 * @param color */ public void setLeftTextColor(int color) { this.mLeftTextView.setTextColor(color); } /** * 设置标题文字颜色 * @param color */ public void setTitleTextColor(int color) { this.mTitleTextView.setTextColor(color); } /** * 设置右侧文字颜色 * @param color */ public void setRightTextColor(int color) { this.mRightTextView.setTextColor(color); } /** * 设置左侧图片 * @param resId */ public void setLeftImageResource(int resId) { this.mLeftImageView.setImageResource(resId); } /** * 设置右侧图片 * @param resId */ public void setRightImageResource(int resId) { this.mRightImageView.setImageResource(resId); } /** * 自定义标题栏接口 */ public interface TitleBarClickListener { public void onLeftClickListener(); public void onRightClickListener(); } }
<!-- 自定义标题栏 --> <declare-styleable name="CustomTitleBar"> <!-- 两侧文字大小 --> <attr name="amboTextSize" format="dimension" /> <attr name="textColor" format="color" /> <!-- 左边 --> <attr name="leftText" format="string" /> <attr name="leftImage" format="reference" /> <attr name="leftBackground" format="color|reference" /> <attr name="leftVisible" format="boolean" /> <!-- 标题 --> <attr name="titleText" format="string" /> /> <attr name="titleTextSize" format="dimension"/> <!-- 右边 --> <attr name="rightText" format="string" /> <attr name="rightImage" format="reference" /> <attr name="rightBackground" format="color|reference" /> <attr name="rightVisible" format="boolean" /> </declare-styleable>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" <strong><span style="color:#ff0000;">xmlns:titlebar="http://schemas.android.com/apk/res-auto"</span></strong> android:layout_width="match_parent" android:layout_height="match_parent" android:background="#cce8cf" android:orientation="vertical"> <strong><span style="color:#ff0000;"><aa.customtitlebar.ui.widget.CustomTitleBar android:id="@+id/id_ctb_main" android:layout_width="match_parent" android:layout_height="50dp" android:background="#ff5e4c" android:padding="10dp" titlebar:amboTextSize="16sp" titlebar:leftImage="@drawable/icon_back" titlebar:rightText="点一点" titlebar:textColor="#ffffff" titlebar:titleText="自定义标题栏" titlebar:leftVisible="true" titlebar:rightVisible="true" titlebar:titleTextSize="19sp" /></span></strong> <TextView android:layout_width="match_parent" android:layout_height="match_parent" android:textSize="50sp" android:gravity="center" android:textColor="#ff67800e" android:text="自定义标题栏"/> </LinearLayout>
下面是标题栏的截图:
源码下载:http://download.csdn.net/detail/hyq912/8379541
Github:https://github.com/WhoIsAA/CustomTitleBar