Android(安卓)IOC

示例代码

@ViewId(R.id.button)private Button button;@Overrideprotected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);     setContentView(R.layout.activity_main);    ViewUtils.inject(this);    button.setText( "123" );}@OnClick({R.id.button})private void aaaaaaa( View view ) {    Toast.makeText( this, "tttttttt", Toast.LENGTH_SHORT).show();}@OnClick(R.id.imageView)private void ttttttt() {    Toast.makeText( this, "ddddddddddd", Toast.LENGTH_SHORT).show();}

ViewUtils

public class ViewUtils {public static void inject(Activity activity) {    inject(new ViewFinder(activity), activity);}public static void inject(View view) {    inject(new ViewFinder(view), view);}public static void inject(View view, Object object) {    inject(new ViewFinder(view), object);}public static void inject( ViewFinder viewFinder, Object object ) {    injectFiled(viewFinder,object);    injectEvent(viewFinder,object);}private static void injectFiled(ViewFinder viewFinder, Object object) {    Class<?> clazz = object.getClass();    // 所有变量    Field[] fields = clazz.getDeclaredFields();    for (Field field : fields) {        // 注解类型        ViewId viewById = field.getAnnotation(ViewId.class);        // 注解不存在        if( viewById == null ) continue;        // 注解的值，ViewID        int viewId = viewById.value();        // 查找，获取View        View view = viewFinder.findViewById(viewId);        if( view == null ) continue;        try {            //  能够注入所有修饰符            field.setAccessible( true );            field.set(object,view);        } catch (IllegalAccessException e) {            e.printStackTrace();        }    }}private static void injectEvent(ViewFinder viewFinder, Object object) {    Class<?> clazz = object.getClass();    // 所有变量    Method[] methods = clazz.getDeclaredMethods();    for (Method method : methods) {        OnClick onClick = method.getAnnotation(OnClick.class);        if( onClick == null ) continue;        int[] value = onClick.value();        if( value.length == 0 ) continue;        for (int viewId : value) {            View view = viewFinder.findViewById(viewId);            if( view == null ) continue;            view.setOnClickListener( new DeclaredOnClickListener( view, object , method) );        }    }}private static class DeclaredOnClickListener implements View.OnClickListener {    private View clickView;    private Object clickObject;    private Method clickMethod;    public DeclaredOnClickListener( View view, Object object, Method method ) {        this.clickView = view;        this.clickObject = object;        this.clickMethod = method;    }    @Override    public void onClick(View v) {        try {            clickMethod.setAccessible(true);            clickMethod.invoke( clickObject, clickView );        } catch (Exception e) {            try {                clickMethod.invoke( clickObject );            } catch (Exception e1) {                e1.printStackTrace();            }        }    }}}

ViewFInder

public class ViewFinder {  private Activity mActivity;  private View mView;  private byte viewType;  public ViewFinder(View view) {      this.mView = view;      viewType = 0;  }  public ViewFinder(Activity activity) {      this.mActivity = activity;      viewType = 1;  }  public View findViewById(int viewId) {      switch ( viewType ) {          case 0:              return mView.findViewById(viewId);          case 1:              return mActivity.findViewById(viewId);      }      return null;  }

}

ViewId

@Target(ElementType.FIELD)@Retention(RetentionPolicy.RUNTIME)public @interface ViewId {      int value();}

OnClick

@Target(ElementType.METHOD)@Retention(RetentionPolicy.RUNTIME)public @interface OnClick {    int[] value();}

示例代码

ViewUtils

ViewFInder

ViewId

OnClick

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