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你必须知道的toolbar切换效果

你必须知道的toolbar切换效果

作者: bigname | 来源:发表于2017-06-29 14:56 被阅读3次

    最近公司需要重构旧项目,所以这段时间在做一些知识储备,了解其中的难点,为重构做准备。

    其中有这样一个场景,普通的一个toolbar,【← title 搜索】点击搜索变成【←_____】搜索栏,实现的方式很多种,当然点击直接去显示隐藏也能够,但这里为了能够照顾一下用户体验,所以在两者切换时使用动画效果来过渡。

    学习是个好东西,趁这次又回顾了android动画的相关知识,其中还进了个小坑,属性动画的scale缩放效果并不会改变控件的宽高,所以在两个页面的互换的时候除了要做好动画效果,还需要监听动画的过程,以便切换控件的Visible属性,否则即使缩放变小用户看不到了但仍然占着原来的位置,点击事件还是不能发生在底下的控件上。

    事不宜迟,分析实现的思路(做成一个自定义控件):

    1.实现布局(custom_layout):

    <?xml version="1.0" encoding="utf-8"?>
    <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="48dp">
        <RelativeLayout
            android:id="@+id/rl_1"
            android:background="#a4b5b5"
            android:layout_width="match_parent"
            android:layout_height="match_parent">
            <ImageView
                android:layout_alignParentRight="true"
                android:layout_width="48dp"
                android:id="@+id/iv_search"
                android:src="@drawable/search"
                android:padding="12dp"
                android:layout_height="48dp" />
        </RelativeLayout>
        <RelativeLayout
            android:visibility="gone"
            android:id="@+id/rl_2"
            android:layout_width="match_parent"
            android:background="#2b8b92"
            android:layout_height="match_parent">
            <ImageView
                android:layout_width="48dp"
                android:id="@+id/iv_back"
                android:padding="12dp"
                android:src="@drawable/back"
                android:layout_height="48dp" />
            <EditText
                android:layout_width="match_parent"
                android:layout_toRightOf="@id/iv_back"
                android:layout_height="match_parent" />
        </RelativeLayout>
    </FrameLayout>
    

    这里分为rl_1和rl_2,rl_2默认visible为gone,当点击rl_1中的按钮时则切换为rl_2,再点击 rl_2中的返回键时则切换为rl_1。

    2:自定义view(CustomLayout)

    public class CustomLayout extends FrameLayout implements View.OnClickListener {
        Context mContext;
        private RelativeLayout mRl1;
        private RelativeLayout mRl2;
        public static final int SHOW_1 = 1;
        public static final int SHOW_2 = 2;
        private ImageView mIvSearch;
        private ImageView mIvBack;
    
        public CustomLayout(@NonNull Context context) {
            this(context,null);
        }
    
        public CustomLayout(@NonNull Context context, @Nullable AttributeSet attrs) {
            this(context, attrs,0);
        }
    
        public CustomLayout(@NonNull Context context, @Nullable AttributeSet attrs, @AttrRes int defStyleAttr) {
            super(context, attrs, defStyleAttr);
            init(context);
        }
    
        private void init(Context context) {
            mContext = context;
            LayoutInflater.from(mContext).inflate(R.layout.custom_layout, this, true);
            mIvSearch = ((ImageView) findViewById(R.id.iv_search));
            mIvBack = ((ImageView) findViewById(R.id.iv_back));
    
            mBtnSearch.setOnClickListener(this);
            mIvBack.setOnClickListener(this);
        }
    
        @Override
        public void onClick(View v) {
            switch (v.getId()) {
                case R.id.iv_search:
                    Toast.makeText(mContext, "view1", Toast.LENGTH_SHORT).show();
                    ObjectAnimator animator1 = createAnimation(mRl1, "scaleX", 800, mRl1.getMeasuredWidth(), 1, 0);
                    animator1.addListener(new ViewVisbleAnimationAdapter(mRl1, mRl2, SHOW_2));
                    startAnimationSet(
                            animator1,
                            createAnimation(mRl2,"scaleX",800,0,0,1)
                            );
    
                    break;
                case R.id.iv_back:
                    Toast.makeText(mContext, "view2", Toast.LENGTH_SHORT).show();
                    ObjectAnimator animator2 = createAnimation(mRl1, "scaleX", 800, mRl1.getMeasuredWidth(), 0, 1);
                    animator2.addListener(new ViewVisbleAnimationAdapter(mRl1, mRl2, SHOW_1));
                    startAnimationSet(
                            animator2,
                            createAnimation(mRl2,"scaleX",800,0,1,0)
                    );
                    break;
            }
        }
    
        /*
        * 生成animition
        * */
        private ObjectAnimator createAnimation(View view,String property,int duration, int pivotX, float from, float to){
            ObjectAnimator animator = ObjectAnimator.ofFloat(view, property, from, to);
            view.setPivotX(pivotX);
            view.setPivotY(0);
            animator.setDuration(duration);
            return animator;
        }
    
        /*
        * 启动动画集合
        * */
        private AnimatorSet startAnimationSet(ObjectAnimator animator1,ObjectAnimator animator2) {
            AnimatorSet animatorSet = new AnimatorSet();
            animatorSet.setDuration(animator1.getDuration());
            animatorSet.play(animator1).with(animator2);
            animatorSet.start();
            return animatorSet;
        }
    
        /*
        *自定义监听器,只监听start与end时的状态
        * */
        class ViewVisbleAnimationAdapter extends AnimatorListenerAdapter{
            private final View view1;
            private final View view2;
            private final int showPoi;
    
            /*
            * showPoi:1表示想要显示1,2代表想要显示2
            * */
            public ViewVisbleAnimationAdapter(View view1, View view2,int showPoi){
                this.view1 = view1;
                this.view2 = view2;
                this.showPoi = showPoi;
            }
            @Override
            public void onAnimationEnd(Animator animation) {
                super.onAnimationEnd(animation);
                if (showPoi == SHOW_1) {
                    view2.setVisibility(GONE);
                } else if(showPoi == SHOW_2){
                    view1.setVisibility(GONE);
                }
            }
    
            @Override
            public void onAnimationStart(Animator animation) {
                super.onAnimationStart(animation);
                if (showPoi == SHOW_1) {
                    view1.setVisibility(VISIBLE);
                }else if(showPoi == SHOW_2){
                    view2.setVisibility(VISIBLE);
                }
            }
        }
    }
    
    

    代码很简单,入门的小伙伴也没压力的。
    最后效果图如下,

    yes.gif

    两个布局之间相互切换,目前封装性比较差,自定义拓展性也是不行的,后期有时间会继续完善一下这个小玩意,第一次写简书,不知道有没有什么潜规则。哈哈

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