你必须知道的toolbar切换效果

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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);}@Overridepublic 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,
这里写图片描述

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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