手机安全卫士——主界面的开发，安全卫士主界面

手机安全卫士——主界面的开发，安全卫士主界面

activity_home.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:id="@+id/text1"     
        style="@style/TitleStyle"
        android:text="功能列表" />

    //自定义TextView  强制有焦点
    <com.mxn.mobilesafe.view.FocusedTextView 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@color/black"
        android:textSize="22sp"
        android:text="新消息：  今日。。。。。"
        android:singleLine="true"  //展示一行  
        android:ellipsize="marquee"//走马灯。。start省略前面的内容。。
        android:layout_marginTop="10dp"
        android:layout_marginBottom="10dp"       
        />
//给TextView加上这两行代码，也可以实现走马灯
<!-- android:focusableInTouchMode="true" -->

<!-- android:focusable="true" -->

    <GridView
        android:id="@+id/gv_home"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:verticalSpacing="30dp"
        android:numColumns="3" >//展示3列
    </GridView>

</LinearLayout>

FocusedTextView.java 

//自定义TextView，获取焦点的TextView
public class FocusedTextView extends TextView{

  //有style样式的会走此方法
    public FocusedTextView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        // TODO Auto-generated constructor stub
    }
  //有属性时的会走此方法
    public FocusedTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
        // TODO Auto-generated constructor stub
    }
   //用代码new对象时走此方法
    public FocusedTextView(Context context) {
        super(context);
        // TODO Auto-generated constructor stub
    }
    
    @Override
    public boolean isFocused() {
        // 表示是否获取焦点，走马灯要运行，首先调用此函数，判断是否有焦点，是true，走马灯才会有效果。强制返回true
        return true;
    }

}

home_list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:orientation="vertical" >

    <ImageView
        android:id="@+id/iv_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/home_apps" />
    

    <TextView
        android:id="@+id/tv_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:textColor="@color/black"
        android:textSize="20sp"
        />

</LinearLayout>

style.xml

<resources>
<style name="TitleStyle">
        <item name="android:layout_width">match_parent</item>
        <item name="android:layout_height">100dp</item>
        <item name="android:background">#8866ff00</item>
        <item name="android:textColor">@color/black</item>
        <item name="android:gravity">center</item>
        <item name="android:textSize">22sp</item>
    </style>
</resources>

color.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="black">#000</color>
    
</resources>

HomeActivity.java

public class HomeActivity extends Activity {

    private GridView gvHome;

    private String[] mItems = new String[] { "手机防盗", "通讯卫士", "软件管理", "进程管理", "流量统计", "手机杀毒", "缓存清理", "高级工具", "设置中心" };

    private int[] mPics = new int[] { R.drawable.home_safe, R.drawable.home_callmsgsafe, R.drawable.home_apps,
            R.drawable.home_taskmanager, R.drawable.home_netmanager, R.drawable.home_trojan,
            R.drawable.home_sysoptimize, R.drawable.home_tools, R.drawable.home_settings };

    private SharedPreferences mPref;

    @Override
    protected void onCreate(Bundle save