StateView

English

StateView 一个轻量级的控件, 继承自 View, 吸收了 ViewStub 的一些特性, 初始状态下是不可见的, 不占布局位置, 占用内存少。 当进行操作显示空/重试/加载视图后, 该视图才会被添加到布局中。

   // andoridx, kotlin version, recommend
   implementation 'com.github.nukc.stateview:kotlin:2.2.0'

   // support library, java version
   compile 'com.github.nukc.stateview:library:1.5.4'

   // animator providers
   compile 'com.github.nukc.stateview:animations:1.0.2'

使用方法

直接在代码中使用:

• 注入到 Activity

    mStateView = StateView.inject(Activity activity);

• 注入到 View

    mStateView = StateView.inject(View view);

• 注入到 ViewGroup

    mStateView = StateView.inject(ViewGroup parent);

或添加到布局（这种方式可以更灵活）:

    <com.github.nukc.stateview.StateView
        android:id="@+id/stateView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

• 显示空视图: mStateView.showEmpty();
• 显示加载视图: mStateView.showLoading();
• 显示重试视图: mStateView.showRetry();
• 显示内容: mStateView.showContent();

设置重试点击事件:

    mStateView.setOnRetryClickListener(new StateView.OnRetryClickListener() {
        @Override
        public void onRetryClick() {
            //do something, no need to call showLoading()
            //不需要调用showLoading()方法, StateView自会调用
        }
    });

设置自定义视图:

• 全局设置办法:在自己项目的layout下新建, 名字跟StateView默认layout一样即可(也不用代码设置). 默认layout的名字:base_empty/base_retry/base_loading.

• 单页面设置:layout名字不一样, 然后再代码设置.

    setEmptyResource(@LayoutRes int emptyResource)

    setRetryResource(@LayoutRes int retryResource)

    setLoadingResource(@LayoutRes int loadingResource)

    // v2.1
    setEmptyView(View view)
    setRetryView(View view)
    setLoadingView(View view)

利用 OnInflateListener 设置文本图像或者其它操作： 在 view 成功添加到 parent 的时候回调（每个 viewType 只回调一次）

    mStateView.setOnInflateListener(new StateView.OnInflateListener() {
        @Override
        public void onInflate(@StateView.ViewType int viewType, View view) {
            if (viewType == StateView.EMPTY) {
                // set text or other
                ViewGroup emptyView = (ViewGroup) view;
                TextView tvMessage = (TextView) emptyView.findViewById(R.id.tv_message);
                ImageView ivState = (ImageView) emptyView.findViewById(R.id.iv_state);
                tvMessage.setText("custom message");
                ivState.setImageResource(R.drawable.retry);
            } else if (viewType == StateView.RETRY) {
                // ...
            }
        }
    });

Custom Attribute

<resources>
    <declare-styleable name="StateView">
        <attr name="emptyResource" format="reference" />
        <attr name="retryResource" format="reference" />
        <attr name="loadingResource" format="reference" />
    </declare-styleable>
</resources>

动画切换

设置视图切换动画:

    // 默认 provider 是 null，即默认不提供动画切换
    // 如果需要，设置一个就可以了
    setAnimatorProvider(AnimatorProvider provider)

动画效果可以自定义，也可以直接使用 animations 这个库，与主库分离，这样不需要的就可以只依赖 library。

    compile 'com.github.nukc.stateview:animations:1.0.1'

目前提供了如下几个动画效果:

• 渐变缩放: FadeScaleAnimatorProvider
• 卡片翻转: FlipAnimatorProvider
• 左右滑动: SlideAnimatorProvider

自定义的话，直接实现 AnimatorProvider接口并提供 Animator 就可以了

public class FadeScaleAnimatorProvider implements AnimatorProvider {

    @Override
    public Animator showAnimation(View view) {
        AnimatorSet set = new AnimatorSet();
        set.playTogether(
                ObjectAnimator.ofFloat(view, "alpha", 0f, 1f),
                ObjectAnimator.ofFloat(view, "scaleX", 0.1f, 1f),
                ObjectAnimator.ofFloat(view, "scaleY", 0.1f, 1f)
        );
        return set;
    }

    @Override
    public Animator hideAnimation(View view) {
        AnimatorSet set = new AnimatorSet();
        set.playTogether(
                ObjectAnimator.ofFloat(view, "alpha", 1f, 0f),
                ObjectAnimator.ofFloat(view, "scaleX", 1f, 0.1f),
                ObjectAnimator.ofFloat(view, "scaleY", 1f, 0.1f)
        );
        return set;
    }
}

兼容沉浸式全屏模式

对于是沉浸式全屏模式下的，可以使用此方法补上 statusBar 的 height，从而不覆盖 toolbar

/**
 * @return statusBarHeight
 */
private int getStatusBarHeight() {
    int height = 0;
    int resId = getResources().getIdentifier("status_bar_height", "dimen", "android");
    if (resId > 0) {
        height = getResources().getDimensionPixelSize(resId);
    }
    return height;
}

ViewGroup.MarginLayoutParams layoutParams = (ViewGroup.MarginLayoutParams) mStateView.getLayoutParams();
layoutParams.topMargin += getStatusBarHeight()

ChangeLog

ChangeLog | releases

License

The MIT License (MIT)

Copyright (c) 2016 Nukc

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.