Android定制组件之TitleBar之涂鸦
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今天我们学习如何实现一个自定义的窗口标题,下面给出该场景的案例:
1案例技术要点(待整理)
2案例代码陈列
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="cn.lynn.title" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" /> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <activity android:name=".CustomTitleMainActivity" android:theme="@style/myTheme"> <intent-filter > <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
strings.xml
<?xml version="1.0" encoding="utf-8"?> <resources> <string name="app_name">Android自定义窗口标题</string> <drawable name="nonecolor">#00000000</drawable> </resources>
main.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TextView android:layout_width="match_parent" android:layout_height="wrap_content" /> </LinearLayout>
自定义样式文件:styles.xml
<?xml version="1.0" encoding="utf-8"?> <resources> <style name="myTheme" parent="android:Theme"> <item name="android:windowContentOverlay">@drawable/nonecolor</item> <item name="android:windowTitleSize">44dp</item> <item name="android:windowTitleBackgroundStyle">@style/myBackground</item> </style> <style name="myBackground"> <item name="android:background">@drawable/rectangle</item> </style> </resources>
自定义窗口标题布局文件:title.xml
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="#FF0000" android:text="lynnli1229自定义的窗口标题" /> <Button android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="添加" android:onClick="add" /> </LinearLayout>
窗口标题背景文件:rectangle.xml
<?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"> <gradient android:angle="270" android:endColor="#1DC9CD" android:startColor="#A2E0FB"/> <padding android:left="2dp" android:top="2dp" android:right="2dp" android:bottom="2dp" /> </shape>
CustomTitleMainActivity.java
package cn.lynn.title; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.Window; import android.widget.Toast; public class CustomTitleMainActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // 设置窗口标题为自定义 requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); setContentView(R.layout.main); // 装载自定义窗口标题布局 getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE, R.layout.title); } public void add(View v) { Toast.makeText(this, "按钮被点击", Toast.LENGTH_LONG).show(); } }