java - FloatingActionButton 单击事件不起作用

Question

我在以下布局文件 activity_register 中有一个 float 操作按钮:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <FrameLayout
        android:paddingTop="70dp"
        android:layout_width="320dp"
        android:layout_height="400dp"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true">

        <android.support.v7.widget.CardView
            android:id="@+id/cv_RegisterAdd"
            app:cardBackgroundColor="#009688"
            android:layout_marginTop="10dp"
            android:layout_gravity="center_horizontal"
            android:layout_width="match_parent"
            android:layout_height="320dp"
            app:cardCornerRadius="6dp"
            app:cardElevation="3dp"
            app:cardUseCompatPadding="true"
            >
            <LinearLayout
                android:orientation="vertical"
                android:layout_width="match_parent"
                android:layout_height="match_parent">

                <TextView
                    android:layout_marginTop="50dp"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="50dp"
                    android:text="REGISTER"
                    android:textColor="#FFFFFF"
                    android:textAppearance="?android:attr/textAppearanceMedium"
                    android:textStyle="bold"
                    />
                <LinearLayout
                    android:layout_marginTop="10dp"
                    android:paddingStart="50dp"
                    android:paddingEnd="30dp"
                    android:layout_width="match_parent"
                    android:layout_height="40dp">
                    <android.support.design.widget.TextInputLayout
                        android:textColorHint="#f0f7f4"
                        android:layout_width="match_parent"
                        android:theme="@style/TextLabel"
                        android:layout_height="wrap_content">
                        <EditText
                            android:textAppearance="?android:attr/textAppearanceMedium"
                            android:hint="Username"
                            android:textColor="#f0f7f4"
                            android:id="@+id/txtCurUsername"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"
                            android:inputType="textPersonName"
                            android:background="@drawable/selector_bg_edit_2"
                            android:textCursorDrawable="@drawable/bg_input_cursor_2"
                            android:paddingBottom="2dp"
                            />
                    </android.support.design.widget.TextInputLayout>
                </LinearLayout>
                <LinearLayout
                    android:paddingStart="50dp"
                    android:paddingEnd="30dp"
                    android:orientation="horizontal"
                    android:layout_width="match_parent"
                    android:layout_height="40dp">
                    <android.support.design.widget.TextInputLayout

                        android:textColorHint="#FFFFFF"
                        android:theme="@style/TextLabel"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content">
                        <EditText
                            android:textAppearance="?android:attr/textAppearanceMedium"
                            android:hint="Password"
                            android:textColor="#f0f7f4"
                            android:id="@+id/txtNewPassword"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"
                            android:inputType="textPassword"
                            android:background="@drawable/selector_bg_edit_2"
                            android:textCursorDrawable="@drawable/bg_input_cursor_2"
                            android:paddingBottom="2dp"
                            />
                    </android.support.design.widget.TextInputLayout>
                </LinearLayout>
                <LinearLayout
                    android:paddingStart="50dp"
                    android:paddingEnd="30dp"
                    android:orientation="horizontal"
                    android:layout_width="match_parent"
                    android:layout_height="40dp">
                    <android.support.design.widget.TextInputLayout

                        android:textColorHint="#f0f7f4"
                        android:theme="@style/TextLabel"
                        android:layout_width="match_parent"
                        android:layout_height="wrap_content">
                        <EditText
                            android:textAppearance="?android:attr/textAppearanceMedium"
                            android:textColor="#f0f7f4"
                            android:hint="Repeat Password"
                            android:id="@+id/txtRepeatPassword"
                            android:layout_width="match_parent"
                            android:layout_height="wrap_content"
                            android:inputType="textPassword"
                            android:background="@drawable/selector_bg_edit_2"
                            android:textCursorDrawable="@drawable/bg_input_cursor_2"
                            android:paddingBottom="2dp"
                            />
                    </android.support.design.widget.TextInputLayout>
                </LinearLayout>
                <Button
                    android:layout_marginTop="20dp"
                    android:layout_gravity="center_horizontal"
                    android:stateListAnimator="@drawable/state_list_animator_z"
                    android:id="@+id/btn_Register"
                    android:text="REGISTER"
                    android:textColor="#009688"
                    android:textAppearance="?android:attr/textAppearanceMedium"
                    android:layout_width="200dp"
                    android:layout_height="40dp"
                    android:background="@drawable/register_btnshape"
                    >
                </Button>

            </LinearLayout>
        </android.support.v7.widget.CardView>
        <android.support.design.widget.FloatingActionButton
            android:id="@+id/fb_Cancel"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            app:fabSize="normal"
            android:src="@drawable/plus_x"
            android:transitionName="loginFab"
            android:layout_gravity="center_horizontal|top" />

    </FrameLayout>


</RelativeLayout>

在 Activity 中，我在 float 操作按钮上设置了一个 Click 事件。我一直在调试和检查事件是否曾经被触发过并且点击事件从未被触发过。 RegisterActivity代码如下:

public class RegisterActivity extends AppCompatActivity
{

    @BindView(R.id.fb_Cancel)
    FloatingActionButton mClose_fb;
    @BindView(R.id.btn_Register)
    Button mRegister_btn;
    @BindView(R.id.cv_RegisterAdd)
    CardView mRegister_cv;
    @Override
    public void onCreate(@Nullable Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_register);
        ButterKnife.bind(this);
        getSupportActionBar().hide();

        if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
        {
            showEnterAnimation();
        }
        mClose_fb.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v)
            {
                animationRevealClose();
            }
        });
    }


    public void showEnterAnimation()
    {
        Transition transition = TransitionInflater.from(this).inflateTransition(R.transition.fabtransition);
        getWindow().setSharedElementEnterTransition(transition);

        transition.addListener(new Transition.TransitionListener() {
            @Override
            public void onTransitionStart(Transition transition) {
                mRegister_cv.setVisibility(View.GONE);
            }

            @Override
            public void onTransitionEnd(Transition transition) {
                transition.removeListener(this);
                animateRevealShow();
            }

            @Override
            public void onTransitionCancel(Transition transition) {

            }

            @Override
            public void onTransitionPause(Transition transition) {

            }

            @Override
            public void onTransitionResume(Transition transition) {

            }
        });
    }

    public void animationRevealClose()
    {
        Animator mAnimator = ViewAnimationUtils.createCircularReveal(mRegister_cv,mRegister_cv.getWidth()/2,0, mRegister_cv.getHeight(), mClose_fb.getWidth() / 2);
        mAnimator.setDuration(500);
        mAnimator.setInterpolator(new AccelerateInterpolator());
        mAnimator.addListener(new AnimatorListenerAdapter()
        {
            @Override
            public void onAnimationEnd(Animator animation)
            {
                mRegister_cv.setVisibility(View.INVISIBLE);
                super.onAnimationEnd(animation);
                mClose_fb.setImageResource(R.drawable.plus);
                RegisterActivity.super.onBackPressed();
            }

            @Override
            public void onAnimationStart(Animator animation) {
                super.onAnimationStart(animation);
            }
        });
    }

    public void animateRevealShow()
    {
        Animator mAnimator = ViewAnimationUtils.createCircularReveal(mRegister_cv, mRegister_cv.getWidth()/2,0, mClose_fb.getWidth() / 2, mRegister_cv.getHeight());
        mAnimator.setDuration(500);
        mAnimator.setInterpolator(new AccelerateDecelerateInterpolator());
        mAnimator.addListener(new AnimatorListenerAdapter()
        {
            @Override
            public void onAnimationEnd(Animator animation)
            {
                super.onAnimationEnd(animation);
            }

            @Override
            public void onAnimationStart(Animator animation)
            {
                mRegister_cv.setVisibility(View.VISIBLE);
                super.onAnimationStart(animation);
            }
        });
        mAnimator.start();
    }

    @Override
    public void onBackPressed() {
        animationRevealClose();
    }

Answer 1

用@OnClick注解的方法应该在onCreate之外。

@Override 
    public void onCreate(@Nullable Bundle savedInstanceState)
    { 
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        ButterKnife.bind(this);

        //--------------------------TODO---------------------// 
        //----------Set a click event for the floating action button 


    } 

 @OnClick({R.id.btn_Login, R.id.fb_Register}) 
        public void onClick(View view)
        { 

        }