<?xml version="1.0" encoding="utf-8"?> <resources>   <declare-styleable name="QLoadingIndicatorView">      <attr name="indicatorId" format="integer"/>   <attr name="indicatorColor" format="color"/>   <attr name="indicatorText" format="string"/>  </declare-styleable>  </resources> 

<pre name="code" class="java"></pre> <h3><a name="t3"></a>2. 在view中關聯這些屬性</h3> <div><pre name="code" class="java">public class MyView extends LinearLayout {   private int mIndicatorColor,mIndicatorId;  private String mIndicatorText;   public MyView(Context context, AttributeSet attrs, int defStyleAttr) {   super(context, attrs, defStyleAttr);    //從xml的屬性中獲取到值，然后想怎么用就怎么用   TypedArray ta=context.obtainStyledAttributes(attrs,R.styleable.QLoadingIndicatorView);   mIndicatorColor=ta.getColor(R.styleable.QLoadingIndicatorView_indicatorColor,Color.BLACK);//第二個參數是設置的默認值，當你不設置這個屬性時會使用這個值   mIndicatorId=ta.getInt(R.styleable.QLoadingIndicatorView_indicatorId,1);   mIndicatorText=ta.getString(R.styleable.QLoadingIndicatorView_indicatorText,"abc");   ta.recycle();   } }</pre><br> <br> </div> <pre name="code" class="java"></pre><pre name="code" class="java"></pre> <h3><a name="t4"></a>3.xml文件中設置屬性和命名空間</h3> <div><pre name="code" class="java"><GridLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent"  xmlns:app="http://schemas.android.com/apk/res-auto" //這就是自己定義的屬性的命名空間，androidstudio是這樣寫的，添加屬性的時候自動生成  android:rowCount="9"  android:columnCount="4">  <com.zxq.com.myrecycleview.progressbaranimation.QLoadingIndicatorView   android:layout_width="50dp"   android:layout_height="50dp"   android:layout_margin="10dp"   app:indicatorId="0"  //自己的設置的屬性      app:indicatorColor="#F00"   >  </com.zxq.com.myrecycleview.progressbaranimation.QLoadingIndicatorView> </GridLayout></pre><br> <br> </div> <pre name="code" class="java"> <pre></pre> <pre></pre> <pre></pre> <pre></pre> </pre>