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解决WebView的定位功能、视频全屏播放、下载功能、页面Url的处理、进度条处理
事先说明:
定位功能在安卓6.0需要用户手动确认权限后才能使用
若需在安卓6.0适配WebView的定位功能,则需要在WebView中手动增加用户权限访问
详细可百度安卓6.0权限管理系统,或者采用第三方封装好的权限管理类进行编写(如Bmob)
如果对内容不理解的话,可参考最后的整个类的代码
如果对BaseActivity这个抽象类不理解的话,可以查看下面一篇文章对BaseActivity的介绍
步骤一:webview初始化属性设置:
/** * 初始化网络设置 */ private void initWebViewSettings() { WebSettings webSettings = wv_web.getSettings(); //可以有缓存 webSettings.setAppCacheEnabled(true); webSettings.setCacheMode(WebSettings.LOAD_DEFAULT); //设置支持页面js可用 webSettings.setJavaScriptEnabled(true); webSettings.setJavaScriptCanOpenWindowsAutomatically(true); //设置允许访问文件数据 webSettings.setAllowFileAccess(true); //可以使用localStorage webSettings.setDomStorageEnabled(true); //可以有数据库 webSettings.setDatabaseEnabled(true); //设置定位的数据库路径,若不设置定位数据库路径则无法使用定位功能 String dir = this.getApplicationContext().getDir("database", Context.MODE_PRIVATE).getPath(); webSettings.setGeolocationDatabasePath(dir); //启用地理定位 webSettings.setGeolocationEnabled(true); }步骤二:页面Url的处理:(如你的WebView中有个打电话按钮,点击即可调用手机原生打电话)
1、对电话号码的处理;
2、对短信的处理;
3、对邮件的处理;
4、对位置的处理:
5、对地图的处理:
private class MyWebViewClient extends WebViewClient { @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { if (url.startsWith("http:") || url.startsWith("https:")) { return false; } else if (url.startsWith(WebView.SCHEME_TEL) || url.startsWith("sms:") || url.startsWith(WebView.SCHEME_MAILTO) || url.startsWith(WebView.SCHEME_GEO) || url.startsWith("maps:")) { try { Intent intent = new Intent(Intent.ACTION_VIEW); intent.setData(Uri.parse(url)); startActivity(intent); } catch (android.content.ActivityNotFoundException e) { } } return true; } }步骤三:webview视频全屏播放的处理:
private class MyWebChromeClient extends WebChromeClient { @Override public void onShowCustomView(View view, WebChromeClient.CustomViewCallback callback) { if (myView != null) { callback.onCustomViewHidden(); return; } //设置横屏 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); myCallBack = callback; //隐藏导航栏 ly_web.removeView(ly_edit); //隐藏网页 ly_web.removeView(wv_web); //添加视频 ly_web.addView(view); myView = view; } @Override public void onHideCustomView() { if (myView == null) { return; } //设置竖屏 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); //隐藏视频 ly_web.removeView(myView); //添加网页 ly_web.addView(wv_web); //展示导航栏 ly_web.addView(ly_edit); myView = null; myCallBack.onCustomViewHidden(); } }步骤四:进度条进度的处理:
private class MyWebChromeClient extends WebChromeClient { @Override public void onProgressChanged(WebView view, int newProgress) { //设置进度条 if (newProgress <= 40) { pb_show.setProgress(newProgress * 2); } else if (newProgress >= 80) { pb_show.setProgress(newProgress); } if (newProgress == 100) { pb_show.setVisibility(View.GONE); } else { pb_show.setVisibility(View.VISIBLE); } } }
private class MyWebChromeClient extends WebChromeClient { public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) { //定位服务 callback.invoke(origin, true, false); super.onGeolocationPermissionsShowPrompt(origin, callback); } }
private class MyDownLoadListener implements DownloadListener { @Override public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) { Uri uri = Uri.parse(url); Intent intent = new Intent(Intent.ACTION_VIEW, uri); startActivity(intent); } }
下面是整个类的源码:
public class WebActivity extends BaseActivity { //进度条 private ProgressBar pb_show; //内容 private WebView wv_web; private String url; //视频切换 private View myView = null; private LinearLayout ly_web = null; //内核 private WebChromeClient chromeClient = null; private WebChromeClient.CustomViewCallback myCallBack = null; //底部 private LinearLayout ly_close, ly_go, ly_back, ly_refresh; private LinearLayout ly_edit; @Override public void initViews() { setContentView(R.layout.activity_web); wv_web = (WebView) findViewById(R.id.wv_web); ly_web = (LinearLayout) findViewById(R.id.ly_web); pb_show = (ProgressBar) findViewById(R.id.pb_show); ly_close = (LinearLayout) findViewById(R.id.ly_close); ly_go = (LinearLayout) findViewById(R.id.ly_go); ly_back = (LinearLayout) findViewById(R.id.ly_back); ly_refresh = (LinearLayout) findViewById(R.id.ly_refresh); ly_edit = (LinearLayout) findViewById(R.id.ly_edit); } @Override public void initListener() { ly_close.setOnClickListener(this); ly_go.setOnClickListener(this); ly_back.setOnClickListener(this); ly_refresh.setOnClickListener(this); } @Override public void initData() { //初始化网络设置 initWebViewSettings(); //初始化网路数据 initWebView(); } @Override public void processClick(View v) { switch (v.getId()) { case R.id.ly_close: finish(); break; case R.id.ly_go: if (wv_web.canGoForward()) { wv_web.goForward(); } break; case R.id.ly_back: if (wv_web.canGoBack()) { wv_web.goBack(); } break; case R.id.ly_refresh: wv_web.reload(); break; } } /** * 初始化网络设置 */ private void initWebViewSettings() { WebSettings webSettings = wv_web.getSettings(); //可以有缓存 webSettings.setAppCacheEnabled(true); webSettings.setCacheMode(WebSettings.LOAD_DEFAULT); //设置支持页面js可用 webSettings.setJavaScriptEnabled(true); webSettings.setJavaScriptCanOpenWindowsAutomatically(true); //设置允许访问文件数据 webSettings.setAllowFileAccess(true); //可以使用localStorage webSettings.setDomStorageEnabled(true); //可以有数据库 webSettings.setDatabaseEnabled(true); //设置定位的数据库路径 String dir = this.getApplicationContext().getDir("database", Context.MODE_PRIVATE).getPath(); webSettings.setGeolocationDatabasePath(dir); //启用地理定位 webSettings.setGeolocationEnabled(true); } /** * 初始化网路数据 */ private void initWebView() { url = getIntent().getStringExtra("url"); wv_web.loadUrl(url); wv_web.setWebViewClient(new MyWebViewClient()); wv_web.setWebChromeClient(new MyWebChromeClient()); wv_web.setDownloadListener(new MyDownLoadListener()); } /** * webView渲染类 */ private class MyWebViewClient extends WebViewClient { @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { if (url.startsWith("http:") || url.startsWith("https:")) { return false; } else if (url.startsWith(WebView.SCHEME_TEL) || url.startsWith("sms:") || url.startsWith(WebView.SCHEME_MAILTO) || url.startsWith(WebView.SCHEME_GEO) || url.startsWith("maps:")) { try { Intent intent = new Intent(Intent.ACTION_VIEW); intent.setData(Uri.parse(url)); startActivity(intent); } catch (android.content.ActivityNotFoundException e) { } } return true; } } /** * webView渲染类 */ private class MyWebChromeClient extends WebChromeClient { @Override public void onShowCustomView(View view, WebChromeClient.CustomViewCallback callback) { if (myView != null) { callback.onCustomViewHidden(); return; } //设置横屏 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); myCallBack = callback; //隐藏导航栏 ly_web.removeView(ly_edit); //隐藏网页 ly_web.removeView(wv_web); //添加视频 ly_web.addView(view); myView = view; } @Override public void onHideCustomView() { if (myView == null) { return; } //设置竖屏 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); //隐藏视频 ly_web.removeView(myView); //添加网页 ly_web.addView(wv_web); //展示导航栏 ly_web.addView(ly_edit); myView = null; myCallBack.onCustomViewHidden(); } @Override public void onProgressChanged(WebView view, int newProgress) { //设置进度条 if (newProgress <= 40) { pb_show.setProgress(newProgress * 2); } else if (newProgress >= 80) { pb_show.setProgress(newProgress); } if (newProgress == 100) { pb_show.setVisibility(View.GONE); } else { pb_show.setVisibility(View.VISIBLE); } } public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) { //定位服务 callback.invoke(origin, true, false); super.onGeolocationPermissionsShowPrompt(origin, callback); } } /** * webView下载类 */ private class MyDownLoadListener implements DownloadListener { @Override public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) { Uri uri = Uri.parse(url); Intent intent = new Intent(Intent.ACTION_VIEW, uri); startActivity(intent); } } @Override public void onBackPressed() { if (myView == null) { if (wv_web.canGoBack()) { //后退 wv_web.goBack(); } else { //退出 finish(); } } else { //关闭全屏 chromeClient.onHideCustomView(); } } @Override protected void onResume() { super.onResume(); wv_web.onResume(); } @Override protected void onPause() { super.onPause(); wv_web.onPause(); } }
效果图演示:顶部是进度条,底部是4个按钮分别和上面代码中对应,中间则是整个WebView
Android解决WebView的定位功能、视频全屏播放、下载功能、页面Url的处理、进度条处理
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原文地址:http://blog.csdn.net/qq_30379689/article/details/51898640