如何在Android中将任何格式的base64数据加载到webview?
我正在实现一个与Webview相关的android应用程序。我从服务器获取base64数据字符串,数据格式可能是jpg或pdf文件或文档文件等 我想使用以下方法在webview中加载base64数据字符串:如何在Android中将任何格式的base64数据加载到webview?,android,webview,base64,Android,Webview,Base64,我正在实现一个与Webview相关的android应用程序。我从服务器获取base64数据字符串,数据格式可能是jpg或pdf文件或文档文件等 我想使用以下方法在webview中加载base64数据字符串: webview.loadData(urlString,“text/html;charset=utf-8”,null) 示例: String urlString = getIntent().getStringExtra("base64String"); String
webview.loadData(urlString,“text/html;charset=utf-8”,null)代码>
示例:
String urlString = getIntent().getStringExtra("base64String");
String mimeType = getIntent().getStringExtra("MimeType");
WebSettings settings = webView.getSettings();
settings.setDefaultTextEncodingName("utf-8");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO) {
String base64 = Base64.encodeToString(urlString.getBytes(), Base64.DEFAULT);
webView.loadData(urlString, "text/html; charset=utf-8", "base64");
} else {
String header = "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>";
webView.loadData(header + urlString, "text/html; chartset=UTF-8", null);
}
String urlString=getIntent().getStringExtra(“base64String”);
字符串mimeType=getIntent().getStringExtra(“mimeType”);
WebSettings=webView.getSettings();
setDefaultTextEncodingName(“utf-8”);
if(Build.VERSION.SDK\u INT>=Build.VERSION\u code.FROYO){
字符串base64=base64.encodeToString(urlString.getBytes(),base64.DEFAULT);
loadData(urlString,“text/html;charset=utf-8”,“base64”);
}否则{
字符串标题=”;
loadData(标题+urlString,“text/html;chartset=UTF-8”,null);
}
请提供一个好的示例,希望它能帮助您
byte[] imageRaw = null;
try {
URL url = new URL("http://some.domain.tld/somePicture.jpg");
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
InputStream in = new BufferedInputStream(urlConnection.getInputStream());
ByteArrayOutputStream out = new ByteArrayOutputStream();
int c;
while ((c = in.read()) != -1) {
out.write(c);
}
out.flush();
imageRaw = out.toByteArray();
urlConnection.disconnect();
in.close();
out.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
String image64 = Base64.encodeToString(imageRaw, Base64.DEFAULT);
String urlStr = "http://example.com/my.jpg";
String mimeType = "text/html";
String encoding = null;
String pageData = "<img src=\"data:image/jpeg;base64," + image64 + "\" />";
WebView wv;
wv = (WebView) findViewById(R.id.webview);
wv.loadDataWithBaseURL(urlStr, pageData, mimeType, encoding, urlStr);
byte[]imageRaw=null;
试一试{
URL=新URL(“http://some.domain.tld/somePicture.jpg");
HttpURLConnection urlConnection=(HttpURLConnection)url.openConnection();
InputStream in=new BufferedInputStream(urlConnection.getInputStream());
ByteArrayOutputStream out=新建ByteArrayOutputStream();
INTC;
而((c=in.read())!=-1){
写出(c);
}
out.flush();
imageRaw=out.toByteArray();
urlConnection.disconnect();
in.close();
out.close();
}捕获(IOE异常){
//TODO自动生成的捕捉块
e、 printStackTrace();
}
字符串image64=Base64.encodeToString(imageRaw,Base64.DEFAULT);
字符串urlStr=”http://example.com/my.jpg";
字符串mimeType=“text/html”;
字符串编码=空;
字符串pageData=“”;
网络视图;
wv=(WebView)findviewbyd(R.id.WebView);
loadDataWithBaseURL(urlStr,pageData,mimeType,encoding,urlStr);
试试看:
webView.loadData(urlString, "text/html; charset=utf-8", "base64");