package com.zht.networkstateview.ui.widget;
import android.content.Context;
import android.content.res.TypedArray;
import android.support.annotation.AttrRes;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.TypedValue;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.zht.networkstateview.R;
import com.zht.networkstateview.utils.UIUtils;
/**
* Created by ZHT on 2017/4/15.
* 加载状态的自定义View
*/
public class NetworkStateView extends LinearLayout {
//当前的加载状态
private int mCurrentState;
private static final int STATE_SUCCESS = 0;
private static final int STATE_LOADING = 1;
private static final int STATE_NETWORK_ERROR = 2;
private static final int STATE_NO_NETWORK = 3;
private static final int STATE_EMPTY = 4;
//布局添加位置
private static final int VIEW_POSITION = 0;
private int mLoadingViewId;
private int mErrorViewId;
private int mErrorImageId;
private String mErrorText;
private int mNoNetworkViewId;
private int mNoNetworkImageId;
private String mNoNetworkText;
private int mEmptyViewId;
private int mEmptyImageId;
private String mEmptyText;
private int mRefreshViewId;
private int mTextColor;
private int mTextSize;
private View mLoadingView;
private View mErrorView;
private View mNoNetworkView;
private View mEmptyView;
private LayoutInflater mInflater;
private ViewGroup.LayoutParams params;
private OnRefreshListener mRefreshListener;
public NetworkStateView(@NonNull Context context) {
this(context, null);
}
public NetworkStateView(@NonNull Context context, @Nullable AttributeSet attrs) {
this(context, attrs, R.attr.styleNetworkStateView);
}
public NetworkStateView(@NonNull Context context, @Nullable AttributeSet attrs, @AttrRes int defStyleAttr) {
super(context, attrs, defStyleAttr);
TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.NetworkStateView, defStyleAttr, R.style.NetworkStateView_Style);
mLoadingViewId = typedArray.getResourceId(R.styleable.NetworkStateView_loadingView, R.layout.view_loading);
mErrorViewId = typedArray.getResourceId(R.styleable.NetworkStateView_errorView, R.layout.view_network_error);
mErrorImageId = typedArray.getResourceId(R.styleable.NetworkStateView_nsvErrorImage, NO_ID);
mErrorText = typedArray.getString(R.styleable.NetworkStateView_nsvErrorText);
mNoNetworkViewId = typedArray.getResourceId(R.styleable.NetworkStateView_noNetworkView, R.layout.view_no_network);
mNoNetworkImageId = typedArray.getResourceId(R.styleable.NetworkStateView_nsvNoNetworkImage, NO_ID);
mNoNetworkText = typedArray.getString(R.styleable.NetworkStateView_nsvNoNetworkText);
mEmptyViewId = typedArray.getResourceId(R.styleable.NetworkStateView_emptyView, R.layout.view_empty);
mEmptyImageId = typedArray.getResourceId(R.styleable.NetworkStateView_nsvEmptyImage, NO_ID);
mEmptyText = typedArray.getString(R.styleable.NetworkStateView_nsvEmptyText);
mRefreshViewId = typedArray.getResourceId(R.styleable.NetworkStateView_nsvRefreshImage, NO_ID);
mTextColor = typedArray.getColor(R.styleable.NetworkStateView_nsvTextColor, 0x8a000000);
mTextSize = typedArray.getDimensionPixelSize(R.styleable.NetworkStateView_nsvTextSize, UIUtils.dp2px(14));
typedArray.recycle();
mInflater = LayoutInflater.from(context);
params = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
setBackgroundColor(UIUtils.getColor(R.color.white));
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
showSuccess();
}
/**
* 加载成功，隐藏加载状态的View
*/
public void showSuccess() {
mCurrentState = STATE_SUCCESS;
showViewByState(mCurrentState);
}
/**
* 显示加载中的状态
*/
public void showLoading() {
mCurrentState = STATE_LOADING;
if (null == mLoadingView) {
mLoadingView = mInflater.inflate(mLoadingViewId, null);
addView(mLoadingView, VIEW_POSITION, params);
}
showViewByState(mCurrentState);
}
/**
* 显示加载失败(网络错误)状态
*/
public void showError() {
mCurrentState = STATE_NETWORK_ERROR;
if (null == mErrorView) {
mErrorView = mInflater.inflate(mErrorViewId, null);
ImageView errorImage = (ImageView) mErrorView.findViewById(R.id.error_image);
TextView errorText = (TextView) mErrorView.findViewById(R.id.error_text);
ImageView errorRefreshView = (ImageView) mErrorView.findViewById(R.id.refresh_view);
image(errorImage, mErrorImageId);
text(errorText, mErrorText);
image(errorRefreshView, mRefreshViewId);
if (null != errorRefreshView) {
errorRefreshView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
if (null != mRefreshListener) {
mRefreshListener.onRefresh();
}
}
});
}
addView(mErrorView, VIEW_POSITION, params);
}
showViewByState(mCurrentState);
}
/**
* 显示没有网络状态
*/
public void showNoNetwork() {
mCurrentState = STATE_NO_NETWORK;
if (null == mNoNetworkView) {
mNoNetworkView = mInflater.inflate(mNoNetworkViewId, null);
ImageView noNetworkImage = (ImageView) mNoNetworkView.findViewById(R.id.no_network_image);
TextView noNetworkText = (TextView) mNoNetworkView.findViewById(R.id.no_network_text);
ImageView networkRefreshView = (ImageView) mNoNetworkView.findViewById(R.id.refresh_view);
image(noNetworkImage, mNoNetworkImageId);
text(noNetworkText, mNoNetworkText);
image(networkRefreshView, mRefreshViewId);
if (null != networkRefreshView) {
networkRefreshView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
if (null != mRefreshListener) {
mRefreshListener.onRefresh();
}
}
});
}
addView(mNoNetworkView, VIEW_POSITION, params);
}
showViewByState(mCurrentState);
}
/**
* 显示无数据状态
*/
public void showEmpty() {
mCurrentState = STATE_EMPTY;
if (null == mEmptyView) {
mEmptyView = mInflater.inflate(mEmptyViewId, null);
ImageView emptyImage = (ImageView) mEmptyView.findViewById(R.id.empty_image);
TextView emptyText = (TextView) mEmptyView.findViewById(R.id.empty_text);
ImageView emptyRefreshView = (ImageView) mEmptyView.findViewById(R.id.refresh_view);
image(emptyImage, mEmptyImageId);
text(emptyText, mEmptyText);
image(emptyRefreshView, mRefreshViewId);
if (null != emptyRefreshView) {
emptyRefreshView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
if (null != mRefreshListener) {
mRefreshListener.onRefresh();
}
}
});
}
addView(mEmptyView, VIEW_POSITION, params);
}
showViewByState(mCurrentState);
}
private void showViewByState(int state) {
//如果当前状态为加载成功，隐藏此View，反之显示
this.setVisibility(state == STATE_SUCCESS ? View.GONE : View.VISIBLE);
if (null != mLoadingView) {
mLoadingView.setVisibility(state == STATE_LOADING ? View.VISIBLE : View.GONE);
}
if (null != mErrorView) {
mErrorView.setVisibility(state == STATE_NETWORK_ERROR ? View.VISIBLE : View.GONE);
}
if (null != mNoNetworkView) {
mNoNetworkView.setVisibility(state == STATE_NO_NETWORK ? View.VISIBLE : View.GONE);
}
if (null != mEmptyView) {
mEmptyView.setVisibility(state == STATE_EMPTY ? View.VISIBLE : View.GONE);
}
}
private void image(ImageView view, int imageId) {
if (null != view && imageId != NO_ID) {
view.setImageResource(imageId);
}
}
private void text(TextView view, String str) {
if (null != view && !TextUtils.isEmpty(str)) {
view.setText(str);
view.setTextColor(mTextColor);
view.setTextSize(TypedValue.COMPLEX_UNIT_PX, mTextSize);
}
}
public void setOnRefreshListener(OnRefreshListener listener) {
mRefreshListener = listener;
}
public interface OnRefreshListener {
void onRefresh();
}
}
