详解Android控件状态依赖框架

@ViewName("商品编码")
private WatchEditText editQuery1;
@ViewName("储位")
private WatchEditText editQuery2;
@ViewName("数量")
private WatchEditText editQuery3;
@ViewDependency(name = @ViewName("确认"), dependency = {"editQuery1", "editQuery2"})
private WatchButton buttonSearch1;
@ViewDependency(name = @ViewName("跳过")/*不依赖输入*/)
private WatchButton buttonSearch2;
@ViewDependency(name = @ViewName("登记缺货"), dependency = {"editQuery2", "editQuery3"})
private WatchButton buttonSearch3;

@Override
public void onClick(View v) {
if (v == buttonSearch1) {
 Toast.makeText(this, "调接口", Toast.LENGTH_SHORT).show();
} else if (v == buttonSearch2) {
 Toast.makeText(this, "跳下一页", Toast.LENGTH_SHORT).show();
} else if (v == buttonSearch3) {
 Toast.makeText(this, "登记缺货", Toast.LENGTH_SHORT).show();
}
}

@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actiOnId== EditorInfo.IME_ACTION_NEXT && v == editQuery1
 && (query1Str = editQuery1.getText().toString()).isEmpty()) {
 if (query1Str.equals("12345")) {
 editQuery1.complete();
 return true;
 }
} 
// 省略代码
return false;
}

@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface ViewDependency {

ViewName name() default @ViewName;

String[] dependency() default {};
}

public abstract class Operator {

// 操作对应的上下文
protected Context context;
// 操作
public abstract boolean operator(String operatorName, String viewName);
}

public class Enter extends Operator {

private static Enter enter;

private Enter(Context context) {
 this.cOntext= context;
}

public static Enter getInstance(Context context) {
 if (enter == null) {
 enter = new Enter(context);
 }
 return enter;
}

@Override
public boolean operator(String operatorName, String viewName) {
 Toast.makeText(context, String.format("[%s]为空，不允许执行[%s]", viewName, operatorName),
  Toast.LENGTH_SHORT).show();
 return false;
}
}

public interface ViewState {
void enter();
void verify();
void complete();
}