能展示不同页面的加载LoadingLayout布局

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加载LoadingLayout布局，是借用的网上的一个代码实例，来完成的，我在此也感谢作者，现在借用一下，来做一个实体的笔记记录，只是记录而且，它可以结合前面的记app断网广播展示布局来更好的展现他的功能。

一个LoadingLayout，可以展示，空数据界面，网络加载错误界面，加载Loading页面和我们想好的内容。先们来看一看效果：

而具体怎么使用呢：

首先将他放在我们需要使用的布局中,自己定义各种的展示布局页面。

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#eaeaea"
android:fitsSystemWindows="true"
android:windowTranslucentNavigation="true"
android:orientation="vertical">

<include layout="@layout/communal_tool_bar" />

<com.yange.chexinbang.base.base.communalview.LoadingLayout
android:id="@+id/loading_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:emptyView="@layout/communal_nodata_layout">
<!--备注：在需要展示的布局外面套上就行，emptyView是加载空数据的布局-->

<cn.bingoogolapple.refreshlayout.BGARefreshLayout
android:id="@+id/carfile_list_refreshlayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#fff">

<android.support.v7.widget.RecyclerView
android:id="@+id/carfile_list_rv"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="#eaeaea">

</android.support.v7.widget.RecyclerView>

</cn.bingoogolapple.refreshlayout.BGARefreshLayout>

</com.yange.chexinbang.base.base.communalview.LoadingLayout>

</LinearLayout>

LoadingLayout的源代码：

public class LoadingLayout extends FrameLayout {

private int emptyView, errorView, loadingView;
private OnClickListener onLoadingClickListener;
private Animation rightCircle;    //向右旋转的360度的动画

private TextView nodata_text;
private Button nodata_bt;

public ImageView circle;
private LinearLayout communal_failload_layout;

public LoadingLayout(Context context) {
this(context, null);
}

public LoadingLayout(Context context, AttributeSet attrs) {
this(context, attrs, -1);
}
public LoadingLayout(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);

TypedArray a = context.getTheme().obtainStyledAttributes(attrs, R.styleable.LoadingLayout, 0, 0);
try {
emptyView = a.getResourceId(R.styleable.LoadingLayout_emptyView, R.layout.communal_nodata_layout); //空数据页面
errorView = a.getResourceId(R.styleable.LoadingLayout_errorView, R.layout.communal_fail_load_layout);//网络失败页面
loadingView = a.getResourceId(R.styleable.LoadingLayout_loadingView, R.layout.communal_loading_view);//加载页面

LayoutInflater inflater = LayoutInflater.from(getContext());
inflater.inflate(emptyView, this, true);
inflater.inflate(errorView, this, true);
inflater.inflate(loadingView, this, true);
initViews();

} finally {
a.recycle();
}

}

//初始化视图
private void initViews() {
rightCircle = new RotateAnimation(0,360,
Animation.RELATIVE_TO_SELF,0.5f,
Animation.RELATIVE_TO_SELF,0.5f);
rightCircle.setDuration(500);
rightCircle.setFillAfter(true);

nodata_bt = (Button) findViewById(R.id.communal_nodata_btn);
communal_failload_layout = (LinearLayout) findViewById(R.id.communal_failload_layout);

nodata_text = (TextView) findViewById(R.id.communal_nodata_message_text);
circle = (ImageView) findViewById(R.id.communal_failload_tryagain_img);

}

@Override
protected void onFinishInflate() {
super.onFinishInflate();

for (int i = 0; i < getChildCount() - 1; i++) {
getChildAt(i).setVisibility(GONE);
}

nodata_bt.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (onLoadingClickListener != null) {
onLoadingClickListener.onClick(v);
}
}
});

communal_failload_layout.setOnClickListener(new OnClickListener() {
@Override
public void onClick(final View v) {
if (onLoadingClickListener != null) {
circle.startAnimation(rightCircle);
new Handler().postDelayed(new Runnable() {
public void run() {
onLoadingClickListener.onClick(v);
}

}, 600);

}
}
});

}

public void setOnRetryClickListener(OnClickListener onLoadingClickListener) {
this.onLoadingClickListener = onLoadingClickListener;
}
//显示空数据页面
public void showEmpty() {
for (int i = 0; i < this.getChildCount(); i++) {
View child = this.getChildAt(i);
if (i == 0) {
child.setVisibility(VISIBLE);
} else {
child.setVisibility(GONE);
}
}
}

//显示网络失败页面
public void showError() {

for (int i = 0; i < this.getChildCount(); i++) {
View child = this.getChildAt(i);
if (i == 1) {
child.setVisibility(VISIBLE);
} else {
child.setVisibility(GONE);
}
}
}
//显示加载Loading页面
public void showLoading() {
for (int i = 0; i < this.getChildCount(); i++) {
View child = this.getChildAt(i);
if (i == 2) {
child.setVisibility(VISIBLE);
} else {
child.setVisibility(GONE);
}
}
}
//显示想要加载的内容
public void showContent() {
for (int i = 0; i < this.getChildCount(); i++) {
View child = this.getChildAt(i);
if (i == 3) {
child.setVisibility(VISIBLE);
} else {
child.setVisibility(GONE);
}
}
}
//下面方法，自己添加的，可以不要
public void setNodataText(String showText) {
nodata_text.setText(showText);

}

public void setNodataBt(int visibility, final Activity activity, final Class<?> cls) {
nodata_bt.setVisibility(visibility);
nodata_bt.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
activity.startActivity(new Intent(activity, cls));

}
});

}

public void setNodataBt(int visibility) {
nodata_bt.setVisibility(visibility);

}

需要的styleable参数，加载attrs中：

<!-- 布局加载loding参数-->
<declare-styleable name="LoadingLayout">
<attr name="loadingView" format="reference" />
<attr name="errorView" format="reference" />
<attr name="retryView" format="reference" />
<attr name="emptyView" format="reference" />
</declare-styleable>

然后在activity中去进行操作：

private LoadingLayout loadingLayout;//加载布局
private void initView() {
loadingLayout = (LoadingLayout) findViewById(R.id.loading_layout);
通过，loadingLayout.showLoading();//加载loading页面
loadingLayout.showError();//网络错误或加载错误的页面
loadingLayout.showEmpty();//空数据页面
loadingLayout.showContent();//显示的内容
来进行展示自己需要的内容，通过loadingLayout.setOnRetryClickListener来进行不同页面的点击事件：

loadingLayout.setOnRetryClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.communal_nodata_btn:
ActivityUtil.goForward(CarFileListActivity.this, CarFileAddActivity.class, true);//关闭跳转到指定的页面
break;
case R.id.communal_failload_layout:
if (!isNetworkConnected()) {
loadingLayout.showError();

} else {
mRefreshLayout.beginRefreshing();
loadingLayout.showLoading();
}

break;
}

}
});

}

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