手機影音2--軟件架構分析，影音2--架構分析

手機影音2--軟件架構分析，影音2--架構分析

1.標題欄

<?xml version="1.0" encoding="utf-8"?>
<com.atguigu.mobileplayer2.view.TitleBar xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="55dp"
    android:background="#ff3097fd"
    android:gravity="center_vertical"
    android:orientation="horizontal">

    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="8dp"
        android:src="@drawable/ic_topbanner_logo" />

    <TextView
        android:id="@+id/tv_search"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="8dp"
        android:layout_weight="1"
        android:background="@drawable/tv_search_bg_selector"
        android:clickable="true"
        android:drawableLeft="@drawable/tv_search_drawable_selector"
        android:drawablePadding="3dp"
        android:text="全網搜索"
        android:textColor="@drawable/tv_search_textcolor_selector"
        android:textSize="14sp" />

    <RelativeLayout
        android:id="@+id/rl_game"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp">

        <TextView
            android:id="@+id/tv_game"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:drawableLeft="@drawable/ic_topbanner_game" />
        <ImageView
            android:layout_width="6dp"
            android:layout_height="6dp"
            android:layout_alignRight="@id/tv_game"
            android:background="@drawable/dot" />

    </RelativeLayout>

    <ImageView
        android:id="@+id/iv_record"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="8dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_topbanner_record" />

</com.atguigu.mobileplayer2.view.TitleBar>

-----------------------------------------
android:drawableLeft="@drawable/sousuokuang_selector"
sousuokuang_selector.xml
對應的是圖片
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="false" android:drawable="@drawable/ic_sousuokuang"/>
    <item android:state_pressed="true" android:drawable="@drawable/ic_sousuokuang_press"/>

</selector>


------文字顏色---------
 android:textColor="@drawable/sousuokuang_textcolor_selector"
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="false" android:color="#99ffffff"/>
    <item android:state_pressed="true" android:color="#ffffffff"/>

</selector>


---------搜索框背景----------
 android:background="@drawable/search_bg_selector"

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_pressed="false" android:drawable="@drawable/search_bg_normal"/>
    <item android:state_pressed="true" android:drawable="@drawable/search_bg_press"
/>

</selector>

android:drawable="@drawable/search_bg_normal"
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <corners android:radius="12.0dp" />
    <padding
        android:bottom="5dp"
        android:left="8dp"
        android:right="8dp"
        android:top="5dp" />

    <solid android:color="#ff2679ca"/>

</shape>

android:drawable="@drawable/search_bg_press"
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle">

    <corners android:radius="12.0dp" />
    <padding
        android:bottom="5dp"
        android:left="8dp"
        android:right="8dp"
        android:top="5dp" />

    <solid android:color="#cc2679ca"/>


</shape>

-----------游戲-------------

android:background="@drawable/gam_dot" />

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="oval">

    <solid android:color="#ffff0000"/>

</shape>

2.自定義標題欄

public class TitleBar extends LinearLayout implements View.OnClickListener {

    private View tv_search;
    private View rl_game;
    private View iv_record;
    private Context context;
    /**
     * 在代碼中實例化該類的時候使用這個方法
     * @param context
     */
    public TitleBar(Context context) {
        this(context,null);
    }

    /**
     * 當在布局文件使用該類的時候，Android系統通過這個構造方法實例化該類
     * @param context
     * @param attrs
     */
    public TitleBar(Context context, AttributeSet attrs) {
        this(context, attrs,0);

    }

    /**
     * 當需要設置樣式的時候，可以使用該方法
     * @param context
     * @param attrs
     * @param defStyleAttr
     */
    public TitleBar(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        this.context = context;
    }

    /**
     * 當布局文件加載完成的時候回調這個方法
     */
    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
        //得到孩子的實例
        tv_search = getChildAt(1);
        rl_game = getChildAt(2);
        iv_record = getChildAt(3);

        //設置點擊事件
        tv_search.setOnClickListener(this);
        rl_game.setOnClickListener(this);
        iv_record.setOnClickListener(this);

    }

    @Override
    public void onClick(View v) {
        switch (v.getId()){
            case R.id.tv_search://搜索
//                Toast.makeText(context, "搜索", Toast.LENGTH_SHORT).show();
                Intent intent = new Intent(context,SearchActivity.class);
                context.startActivity(intent);
                break;
            case R.id.rl_game://游戲
                Toast.makeText(context, "游戲", Toast.LENGTH_SHORT).show();
                break;
            case R.id.iv_record://播放歷史
                Toast.makeText(context, "播放歷史", Toast.LENGTH_SHORT).show();
                break;
        }
    }
}

3.屏蔽各個頁面重復初始化數據

1.在BasePager中添加標識字段

public abstract class BasePager {

    /**
      * 判斷是否初始化過數據
    */
    public boolean isInit;

    ....

}

2.在主頁面中屏蔽

/**
 * 得到具體的某個孩子的實例視圖
 * @return
 */
private BasePager getBasePager() {
    BasePager basePager = basePagers.get(position);
    if(basePager != null&&!basePager.isInit){
        basePager.initData();
        basePager.isInit = true;
    }
    return basePager;
}