/*
* Copyright 2016. SHENQINCI(沈钦赐)<dev@qinc.me>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package ren.qinc.markdowneditors.base;
import android.annotation.TargetApi;
import android.app.AlertDialog;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.res.Configuration;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.design.widget.Snackbar;
import android.text.TextUtils;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.webkit.CookieManager;
import android.webkit.CookieSyncManager;
import android.webkit.JsResult;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
import android.webkit.WebResourceError;
import android.webkit.WebResourceRequest;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.TextSwitcher;
import android.widget.TextView;
import com.daimajia.numberprogressbar.NumberProgressBar;
import butterknife.Bind;
import butterknife.ButterKnife;
import ren.qinc.markdowneditors.R;
import ren.qinc.markdowneditors.utils.Check;
import ren.qinc.markdowneditors.utils.Network;
import ren.qinc.markdowneditors.utils.SystemBarUtils;
import ren.qinc.markdowneditors.utils.SystemUtils;
import ren.qinc.markdowneditors.widget.ObservableWebView;
/**
* 网页浏览,必须提供
* 1. mProgressBar 2. mWebView 3. tv_title
* 子类可以在initOther添加js接口等不同操作
* Created by 沈钦赐
*/
public class BaseWebActivity extends BaseToolbarActivity {
public static final String CONTENT_KEY = "extra_content";
public static final String URL_KEY = "extra_url";
public static final String TITLE_KEY = "extra_title";
@Bind(R.id.progressbar)
protected NumberProgressBar mProgressBar;
@Bind(R.id.webView)
protected ObservableWebView mWebView;
@Bind(R.id.tv_title)
protected TextSwitcher mTextSwitcher;
private String url, title, content;
@Override
protected void onResume() {
super.onResume();
if (mWebView != null) mWebView.onResume();
}
@Override
protected void onPause() {
if (mWebView != null) mWebView.onPause();
super.onPause();
}
@Override
protected void onDestroy() {
ButterKnife.unbind(this);
if (mWebView != null) {
mWebView.pauseTimers();
mWebView.stopLoading();
mWebView.setFocusable(true); //
mWebView.removeAllViews();
mWebView.clearHistory();
mWebView.destroy();
}
super.onDestroy();
}
/**
* New intent intent.
*
* @param context the context
* @param url url优先加载
* @param content 网页内容,如果url不为空,内存可为空
* @param defaultTitle the default title
* @return the intent
*/
public static void load(Context context, String url, String content, String defaultTitle) {
Intent intent = new Intent(context, BaseWebActivity.class);
intent.putExtra(URL_KEY, url);
intent.putExtra(TITLE_KEY, defaultTitle);
intent.putExtra(CONTENT_KEY, content);
context.startActivity(intent);
}
/**
* Load url.
*
* @param context the context
* @param url the url
* @param defaultTitle the default title
*/
public static void loadUrl(Context context, @NonNull String url, @Nullable String defaultTitle) {
load(context, url, "", defaultTitle);
}
/**
* Load content.
*
* @param context the context
* @param content the content
* @param defaultTitle the default title
*/
public static void loadContent(Context context, @NonNull String content, String defaultTitle) {
load(context, "", content, defaultTitle);
}
protected void initStatusBar() {
SystemBarUtils.setHeightAndPadding(this, mToolbar);
}
/**
* onCreate之后调用,可以用来初始化view
*
* @param savedInstanceState the saved instance state
*/
@Override
public final void onCreateAfter(Bundle savedInstanceState) {
parseIntent();
enableJavascript();
enableCaching();
enableClient();
enableAdjust();
zoomedOut();
//网页标题
mTextSwitcher.setFactory(() -> {
TextView textView = new TextView(this);
textView.setTextAppearance(this, R.style.WebTitle);
textView.setSingleLine(true);
textView.setEllipsize(TextUtils.TruncateAt.MARQUEE);
textView.postDelayed(() -> textView.setSelected(true), 1738);
return textView;
});
mTextSwitcher.setInAnimation(this, android.R.anim.fade_in);
mTextSwitcher.setOutAnimation(this, android.R.anim.fade_out);
if (title != null) setTitle(title);
if (mProgressBar != null)
mProgressBar.setReachedBarColor(BaseApplication.color(R.color.colorPrimary));
//设置滑动监听
mWebView.setOnScrollChangedCallback((dx, dy, x, y) -> {//滑动监听
});
onCreateAfterLater();
}
private void zoomedOut() {
mWebView.getSettings().setSupportZoom(false);// 不支持缩放
mWebView.getSettings().setUseWideViewPort(true);// 将图片调整到适合webview的大小
mWebView.getSettings().setBuiltInZoomControls(false);// 不显示缩放工具
}
private void enableClient() {
mWebView.setWebChromeClient(new ChromeClient());
mWebView.setWebViewClient(new WebClient());
}
private void enableAdjust() {
mWebView.getSettings().setLayoutAlgorithm(WebSettings.LayoutAlgorithm.SINGLE_COLUMN);// 把所有内容放在webview等宽的一列中
mWebView.getSettings().setLoadWithOverviewMode(true);// 加载一个页面是否与概述模式
}
/**
* Enable caching.打开缓存
*/
private void enableCaching() {
mWebView.getSettings().setAppCachePath(getFilesDir() + getPackageName() + "/cache");
mWebView.getSettings().setAppCacheEnabled(true);
mWebView.getSettings().setCacheMode(WebSettings.LOAD_DEFAULT);
mWebView.getSettings().setAllowFileAccess(true);// 访问文件数据
}
/**
* 打开javaScript支持
* Enable javascript.
*/
private void enableJavascript() {
mWebView.getSettings().setJavaScriptEnabled(true);// 能够执行Javascript脚本
mWebView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
}
private void parseIntent() {
url = getIntent().getStringExtra(URL_KEY);
title = getIntent().getStringExtra(TITLE_KEY);
content = getIntent().getStringExtra(CONTENT_KEY);
}
/**
* 界面初始化后,网页还没有开始加载,子类可以重写方法操作要操作的东西
* On create after later.
*/
protected void onCreateAfterLater() {
}
/**
* 界面渲染完毕，可在这里进行初始化工作，建议在这里启动线程进行初始化工作
* 数据获取等操作
*/
@Override
public void initData() {
initOther();
if (!Check.isEmpty(url)) {
if (Network.getInstance().isConnected()) {
mWebView.loadUrl(url);
} else {
//没有网络
}
} else if (!Check.isEmpty(content)) {
mWebView.loadDataWithBaseURL(null, content, "text/html", "UTF-8", null);
}
}
/**
* Init other.子类可以重写此方法,初始化其他东西,如添加javascript接口
*/
protected void initOther() {
//mWebview.addJavascriptInterface(new JavaScriptInterface(context, download), "android");
}
/**
* Activitiy的布局,必须重写
*
* @return 布局资源
*/
@Override
public int getLayoutId() {
return R.layout.activity_common_web;
}
@Override
protected boolean hasBackButton() {
return true;
}
@Override
public void setTitle(CharSequence title) {
super.setTitle(title);
if (mTextSwitcher != null)
mTextSwitcher.setText(title);
}
protected void refresh() {
mWebView.reload();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
if (this.getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) {
this.switchScreenConfiguration(null);
} else {
if (mWebView.canGoBack()) {
mWebView.goBack();//回退
} else {
finish();
}
}
return true;
}
}
return super.onKeyDown(keyCode, event);
}
public void switchScreenConfiguration(MenuItem item) {
Configuration configuration = this.getResources().getConfiguration();
if (configuration.orientation == Configuration.ORIENTATION_PORTRAIT) {
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);
if (item != null) item.setTitle(this.getString(R.string.menu_web_vertical));
} else {
this.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_PORTRAIT);
if (item != null) item.setTitle(this.getString(R.string.menu_web_horizontal));
}
// getResources().updateConfiguration(configuration,null);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_web, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (menuClick(id)) {
return true;
}
return super.onOptionsItemSelected(item);
}
private boolean menuClick(int id) {
switch (id) {
case R.id.action_refresh:
refresh();
return true;
case R.id.action_copy_url:
// String copyDone = getString(R.string.tip_copy_done);
SystemUtils.copyToClipBoard(this, mWebView.getUrl());
Snackbar.make(mWebView, "复制完成", Snackbar.LENGTH_SHORT).show();
return true;
case R.id.action_open_url:
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
Uri uri = Uri.parse(url);
intent.setData(uri);
if (intent.resolveActivity(getPackageManager()) != null) {
startActivity(intent);
} else {
Snackbar.make(mWebView, "打开失败", Snackbar.LENGTH_SHORT).show();
}
return true;
case R.id.action_clear_cache:
mWebView.clearCache(true);
mWebView.clearHistory();
Snackbar.make(mWebView, "清理缓存成功", Snackbar.LENGTH_SHORT).show();
return true;
case R.id.action_clear_cookie:
CookieSyncManager.createInstance(this);
CookieSyncManager.getInstance().startSync();
CookieManager.getInstance().removeSessionCookie();
Snackbar.make(mWebView, "清理Cookie成功", Snackbar.LENGTH_SHORT).show();
return true;
}
return false;
}
private class ChromeClient extends WebChromeClient {
@Override
public void onProgressChanged(WebView view, int newProgress) {
super.onProgressChanged(view, newProgress);
if (mProgressBar == null) return;
mProgressBar.setProgress(newProgress);
if (newProgress == 100) {
mProgressBar.setVisibility(View.GONE);
} else {
mProgressBar.setVisibility(View.VISIBLE);
}
}
@Override
public void onReceivedTitle(WebView view, String title) {
super.onReceivedTitle(view, title);
setTitle(title);
}
//扩展支持alert事件
@Override
public boolean onJsAlert(WebView view, String url, String message, JsResult result) {
AlertDialog.Builder builder = new AlertDialog.Builder(view.getContext());
builder.setTitle("注意").setMessage(message).setPositiveButton("确定", null);
builder.setCancelable(false);
AlertDialog dialog = builder.create();
dialog.show();
result.confirm();
return true;
}
//扩展浏览器上传文件
//3.0++版本
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {
openFileChooserImpl(uploadMsg, acceptType);
}
//3.0--版本
public void openFileChooser(ValueCallback<Uri> uploadMsg) {
openFileChooserImpl(uploadMsg, "");
}
// Android 4.1++
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
openFileChooserImpl(uploadMsg, acceptType);
}
// For Android > 5.0
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> uploadMsg, FileChooserParams fileChooserParams) {
String acceptType = null;
if (Build.VERSION.SDK_INT >= 21) {
String[] acceptTypes = fileChooserParams.getAcceptTypes();
if (acceptTypes != null && acceptTypes.length > 0) {
acceptType = acceptTypes[0];
}
}
openFileChooserImplForAndroid5(uploadMsg, acceptType);
return true;
}
}
private final static int FILECHOOSER_RESULTCODE = 101;
private final static int FILECHOOSER_RESULTCODE_FOR_ANDROID_5 = 102;
private ValueCallback<Uri> mUploadMessage;
public ValueCallback<Uri[]> mUploadMessageForAndroid5;
/**
* 5.--文件选择
* Open file chooser.
*
* @param uploadMsg the upload msg
* @param acceptType the accept type
*/
private void openFileChooserImpl(ValueCallback<Uri> uploadMsg, String acceptType) {
if (TextUtils.isEmpty(acceptType.trim()))
acceptType = "image/*";
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType(acceptType);
startActivityForResult(Intent.createChooser(i, "File Chooser"), FILECHOOSER_RESULTCODE);
}
/**
* 5.++文件选择
* Open file chooser impl for android 5.
*
* @param uploadMsg the upload msg
* @param acceptType the accept type
*/
private void openFileChooserImplForAndroid5(ValueCallback<Uri[]> uploadMsg, String acceptType) {
if (TextUtils.isEmpty(acceptType.trim()))
acceptType = "image/*";
mUploadMessageForAndroid5 = uploadMsg;
Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
contentSelectionIntent.setType(acceptType);
Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);
chooserIntent.putExtra(Intent.EXTRA_TITLE, "Image Chooser");
startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE_FOR_ANDROID_5);
}
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent intent) {
if (requestCode == FILECHOOSER_RESULTCODE) {
if (null == mUploadMessage)
return;
Uri result = intent == null || resultCode != RESULT_OK ? null : intent.getData();
mUploadMessage.onReceiveValue(result);
mUploadMessage = null;
} else if (requestCode == FILECHOOSER_RESULTCODE_FOR_ANDROID_5) {
if (null == mUploadMessageForAndroid5)
return;
Uri result = (intent == null || resultCode != RESULT_OK) ? null : intent.getData();
if (result != null) {
mUploadMessageForAndroid5.onReceiveValue(new Uri[]{result});
} else {
mUploadMessageForAndroid5.onReceiveValue(new Uri[]{});
}
mUploadMessageForAndroid5 = null;
}
}
private class WebClient extends WebViewClient {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url != null) view.loadUrl(url);
return true;
}
@Override
public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
super.onReceivedError(view, request, error);
Snackbar.make(view, "加载错误", Snackbar.LENGTH_LONG).show();
}
public void onPageFinished(WebView view, String url) {
// Snackbar.make(view, "加载完成", Snackbar.LENGTH_SHORT).show();
}
@Override
public void onReceivedError(WebView view, int errorCode,
String description, String failingUrl) {
super.onReceivedError(view, errorCode, description, failingUrl);
Snackbar.make(view, "加载错误errorCode:" + errorCode, Snackbar.LENGTH_LONG).show();
}
}
}