Android中WebView的定位功能、視訊全屏播放、下載功能、頁面Url的處理、進度條處理
阿新 • • 發佈：2019-02-18
一、WebView 初始化設定
二、對Url的處理/** * webview初始化設定 */ private void initWebViewSettings() { WebSettings webSettings = wv_web.getSettings(); //可以有快取 webSettings.setAppCacheEnabled(true); webSettings.setCacheMode(WebSettings.LOAD_DEFAULT); //設定支援頁面js可用 webSettings.setJavaScriptEnabled(true); webSettings.setJavaScriptCanOpenWindowsAutomatically(true); //設定允許訪問檔案資料 webSettings.setAllowFileAccess(true); //可以使用localStorage webSettings.setDomStorageEnabled(true); //可以有資料庫 webSettings.setDatabaseEnabled(true); //設定定位的資料庫路徑，若不設定定位資料庫路徑則無法使用定位功能 String dir = this.getApplicationContext().getDir("database", Context.MODE_PRIVATE).getPath(); webSettings.setGeolocationDatabasePath(dir); //啟用地理定位 webSettings.setGeolocationEnabled(true); }
1、對電話號碼的處理；
2、對簡訊的處理；
3、對郵件的處理；
4、對位置的處理：
5、對地圖的處理：
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; } }
三、視訊全屏播放
private class MyWebChromeClient extends WebChromeClient { @Override public void onShowCustomView(View view, WebChromeClient.CustomViewCallback callback) { if (myView != null) { callback.onCustomViewHidden(); return; } //設定橫屏 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); myCallBack = callback; //隱藏導航欄 ly_web.removeView(ly_edit); //隱藏網頁 ly_web.removeView(wv_web); //新增視訊 ly_web.addView(view); myView = view; } @Override public void onHideCustomView() { if (myView == null) { return; } //設定豎屏 setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); //隱藏視訊 ly_web.removeView(myView); //新增網頁 ly_web.addView(wv_web); //展示導航欄 ly_web.addView(ly_edit); myView = null; myCallBack.onCustomViewHidden(); } }
四、進度條
private class MyWebChromeClient extends WebChromeClient {
@Override
public void onProgressChanged(WebView view, int newProgress) {
//設定進度條
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);
}
}
}五、定位
private class MyWebChromeClient extends WebChromeClient {
public void onGeolocationPermissionsShowPrompt(String origin,
GeolocationPermissions.Callback callback) {
//定位服務
callback.invoke(origin, true, false);
super.onGeolocationPermissionsShowPrompt(origin, callback);
}
}六、下載
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);
}
}全部原始碼
public class WebActivity extends BaseActivity {
//進度條
private ProgressBar pb_show;
//內容
private WebView wv_web;
private String url;
//視訊切換
private View myView = null;
private LinearLayout ly_web = null;
//核心
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() {
//初始化網路設定
initWebViewSettings();
//初始化網路資料
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;
}
}
/**
* 初始化網路設定
*/
private void initWebViewSettings() {
WebSettings webSettings = wv_web.getSettings();
//可以有快取
webSettings.setAppCacheEnabled(true);
webSettings.setCacheMode(WebSettings.LOAD_DEFAULT);
//設定支援頁面js可用
webSettings.setJavaScriptEnabled(true);
webSettings.setJavaScriptCanOpenWindowsAutomatically(true);
//設定允許訪問檔案資料
webSettings.setAllowFileAccess(true);
//可以使用localStorage
webSettings.setDomStorageEnabled(true);
//可以有資料庫
webSettings.setDatabaseEnabled(true);
//設定定位的資料庫路徑
String dir = this.getApplicationContext().getDir("database", Context.MODE_PRIVATE).getPath();
webSettings.setGeolocationDatabasePath(dir);
//啟用地理定位
webSettings.setGeolocationEnabled(true);
}
/**
* 初始化網路資料
*/
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渲染類
*/
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渲染類
*/
private class MyWebChromeClient extends WebChromeClient {
@Override
public void onShowCustomView(View view, WebChromeClient.CustomViewCallback callback) {
if (myView != null) {
callback.onCustomViewHidden();
return;
}
//設定橫屏
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
myCallBack = callback;
//隱藏導航欄
ly_web.removeView(ly_edit);
//隱藏網頁
ly_web.removeView(wv_web);
//新增視訊
ly_web.addView(view);
myView = view;
}
@Override
public void onHideCustomView() {
if (myView == null) {
return;
}
//設定豎屏
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
//隱藏視訊
ly_web.removeView(myView);
//新增網頁
ly_web.addView(wv_web);
//展示導航欄
ly_web.addView(ly_edit);
myView = null;
myCallBack.onCustomViewHidden();
}
@Override
public void onProgressChanged(WebView view, int newProgress) {
//設定進度條
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) {
//定位服務
callback.invoke(origin, true, false);
super.onGeolocationPermissionsShowPrompt(origin, callback);
}
}
/**
* webView下載類
*/
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()) {
//後退
wv_web.goBack();
} else {
//退出
finish();
}
} else {
//關閉全屏
chromeClient.onHideCustomView();
}
}
@Override
protected void onResume() {
super.onResume();
wv_web.onResume();
}
@Override
protected void onPause() {
super.onPause();
wv_web.onPause();
}
}示例圖
