Android WebView 踩坑之路

摘要： H5定位 // 定位(location) settings.setGeolocationEnabled(true); String dir = this.getApplicationContext().getDir("database"...

H5定位

// 定位(location)
settings.setGeolocationEnabled(true);
String dir = this.getApplicationContext().getDir("database", Context.MODE_PRIVATE).getPath();
//設定定位的資料庫路徑
settings.setGeolocationDatabasePath(dir);
webView.setWebChromeClient(new WebChromeClient() {
@Override
public void onReceivedIcon(WebView view, Bitmap icon) {
super.onReceivedIcon(view, icon);
}

// 處理javascript中的alert
public boolean onJsAlert(WebView view, String url, String message,
final JsResult result) {
return true;
}


// 處理javascript中的confirm
public boolean onJsConfirm(WebView view, String url,
String message, final JsResult result) {
return true;
}


@Override
public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
callback.invoke(origin, true, false);
super.onGeolocationPermissionsShowPrompt(origin, callback);
}
});

Http、Https混雜圖片無法載入

WebSettings settings = webView.getSettings();
settings.setJavaScriptEnabled(true);
settings.setLoadWithOverviewMode(true);
settings.setBlockNetworkImage(false);
settings.setAppCacheEnabled(true);// 預設值 false
settings.setLoadsImagesAutomatically(true); // 是否自動載入圖片
// 儲存(storage)
settings.setDomStorageEnabled(true);// 預設值 false
settings.setDatabaseEnabled(true);
settings.setCacheMode(WebSettings.LOAD_DEFAULT);

@Override
public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
//super.onReceivedSslError(view, handler, error);
// handler.proceed();// 接受所有網站證書
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
view.getSettings().setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
}
}

微信、支付寶、打電話無法調起

@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url == null) return false;
if (url.startsWith("tel:")) {
Intent intent = new Intent(Intent.ACTION_VIEW,
Uri.parse(url));
startActivity(intent);
return true;
}
try {
if (url.startsWith("weixin://") || url.startsWith("alipays://") ||
url.startsWith("mailto://") || url.startsWith("tel://")
//其他自定義的scheme
) {
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(intent);
return true;
}
} catch (Exception e) { //防止crash (如果手機上沒有安裝處理某個scheme開頭的url的APP, 會導致crash)
return false;
}
view.loadUrl(url);
return true;
}