本文实例为大家分享了Android自定义通用标题栏的具体代码，供大家参考，具体内容如下
1自定义一个public_titlebar.xml文件
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<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/rootView" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <ImageView android:id="@+id/ivLeft" android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/z"/> <LinearLayout android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_weight="1"> <TextView android:id="@+id/tvTitle" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:text="tvTitle"/> <TextView android:id="@+id/tvRight" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_weight="1" android:text="tvRight"/> </LinearLayout></LinearLayout> |
2.在values文件夹下新建一个attrs.xml
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<?xml version="1.0" encoding="utf-8"?> <resources> <declare-styleable name="CustomerTitleBar"> <attr name="left_image" format="reference"></attr> <attr name="center_text" format="string"></attr> <attr name="center_text_color" format="color"></attr> <attr name="center_text_size" format="dimension"></attr> </declare-styleable> </resources> |
3.自定义CustomerTitleBar类继承LinearLayout，统一页面标题栏，项目中包括接口回调
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public class CustomerTitleBar extends LinearLayout {private LinearLayout rootView;private ImageView ivLeft;private TextView tvTitle;private TextView tvRight;//3.声明回调对象private CustomerClick leftClick;/** * @param context *///在代码中直接new一个Custom View实例的时候,会调用第一个构造函数public CustomerTitleBar(Context context) { this(context,null);}//在xml布局文件中调用Custom View的时候,会调用第二个构造函数public CustomerTitleBar(Context context,AttributeSet attrs) { this(context, attrs,-1);}//在xml布局文件中调用Custom View,并且Custom View标签中还有自定义属性时,这里调用的还是第二个构造函数.public CustomerTitleBar(Context context,AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); init(context); initAttrs(context,attrs); initLister();}private void init(Context context) { rootView= (LinearLayout) View.inflate(context,R.layout.layout_customer_title_bar,this); ivLeft=rootView.findViewById(R.id.ivLeft); tvTitle=rootView.findViewById(R.id.tvTitle); tvRight=rootView.findViewById(R.id.tvRight);}private void initAttrs(Context context, AttributeSet attrs) { TypedArray typedArray=context.obtainStyledAttributes(attrs,R.styleable.CustomerTitleBar); Drawable drawable=typedArray.getDrawable(R.styleable.CustomerTitleBar_left_image); if (drawable!=null){ ivLeft.setImageDrawable(drawable); } CharSequence text = typedArray.getText(R.styleable.CustomerTitleBar_center_text); if (!TextUtils.isEmpty(text)) { tvTitle.setText(text); } int color = typedArray.getColor(R.styleable.CustomerTitleBar_center_text_color, -1); if (color != -1) { tvTitle.setTextColor(color); } float dimension = typedArray.getDimension(R.styleable.CustomerTitleBar_center_text_size, 0f); tvTitle.setTextSize(dimension);}private void initLister() { ivLeft.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { //5.使用接口回调 if (leftClick!=null){ leftClick.onLefClick(v); } } });}//4、提供回调对象的set方法public void setLeftClick(CustomerClick leftClick) { this.leftClick = leftClick;}//1.定义回调接口interface CustomerClick{ void onLefClick(View view);}} |
4.在布局文件中的引用
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<com.cn.jyx.customertitlebar.CustomerTitleBar android:id="@+id/ctTitle" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" customer:center_text="吐泡泡" customer:center_text_color="#ff00ff" customer:center_text_size="20sp" /> |
5.在Activity中的用法
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public class MainActivity extends AppCompatActivity { private CustomerTitleBar ctTitle; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ctTitle=findViewById(R.id.ctTitle); //6、使用 ctTitle.setLeftClick(new CustomerTitleBar.CustomerClick() { @Override public void onLefClick(View view) { Toast.makeText(MainActivity.this,"吐泡泡",Toast.LENGTH_LONG).show(); } });}} |
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。
原文链接：https://blog.csdn.net/jyxlichao/article/details/83961776
