####注意：h5接入的方式风险比较大，由于android机型特多，很多定制系统。因此开发者在开发h5接入的方式，会遇见很多防不胜防的坑。本文demo只做参考，给h5接入提供方便，也有未知的问题没覆盖到。
//支持获取手势焦点，输入用户名、密码或其他
mwebView.requestFocusFromTouch();
mwebView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
mwebView.setScrollbarFadingEnabled(false);
final WebSettings settings = mwebView.getSettings();
settings.setJavaScriptEnabled(true); //支持js
// 设置自适应屏幕，两者合用
settings.setUseWideViewPort(true); //将图片调整到适合webview的大小
settings.setLoadWithOverviewMode(true); // 缩放至屏幕的大小
//若setSupportZoom是false，则该WebView不可缩放，这个不管设置什么都不能缩放。
settings.setSupportZoom(true); //支持缩放，默认为true。是setBuiltInZoomControls的前提。
settings.setBuiltInZoomControls(true); //设置内置的缩放控件。
settings.supportMultipleWindows(); //多窗口
settings.setAllowFileAccess(true); //设置可以访问文件
settings.setNeedInitialFocus(true); //当webview调用requestFocus时为webview设置节点
settings.setJavaScriptCanOpenWindowsAutomatically(true); //支持通过JS打开新窗口
//设置编码格式
settings.setDefaultTextEncodingName("UTF-8");
// 关于是否缩放
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
settings.setDisplayZoomControls(false);
}
settings.setLoadsImagesAutomatically(true); //支持自动加载图片
settings.setDomStorageEnabled(true); //开启DOM Storage
mwebView.setDownloadListener(new DownloadListener() {
@Override
public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {
// 监听下载功能，当用户点击下载链接的时候，直接调用系统的浏览器来下载
Uri uri = Uri.parse(url);
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
}
});
mwebView.setWebChromeClient(udeskWebChromeClient);
mwebView.setWebViewClient(new WebViewClient() {
@Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
}
@Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
UdeskWebViewActivity.this.finish();
}
@Override
public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
handler.proceed();
}
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Intent intent=new Intent(Intent.ACTION_VIEW,Uri.parse(url));
startActivity(intent);
return true;
}
});
/**
* Created by user on 2016/12/15.
*/
public class UdeskWebChromeClient extends WebChromeClient {
private Activity mContext;
private ValueCallback<Uri> uploadMessage;
private ValueCallback<Uri[]> uploadMessageAboveL;
private final static int FILE_CHOOSER_RESULT_CODE = 10000;
ICloseWindow closeWindow = null;
private Uri photoUri;
private Uri videoUri;
private final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 10001;
private final int CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE = 10002;
public UdeskWebChromeClient(Activity context,ICloseWindow closeWindow) {
mContext = context;
this.closeWindow = closeWindow;
}
@Override
public void onProgressChanged(WebView view, int newProgress) {
super.onProgressChanged(view, newProgress);
}
// For Android < 3.0
public void openFileChooser(ValueCallback<Uri> valueCallback) {
uploadMessage = valueCallback;
openFileChooserActivity();
}
// For Android >= 3.0
public void openFileChooser(ValueCallback valueCallback, String acceptType) {
uploadMessage = valueCallback;
if (acceptType.equals("video/*")){
videoUri = takeVedio(videoUri, CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE);
}else if (acceptType.equals("image/*")){
photoUri = takePhoto(photoUri, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}else {
openFileChooserActivity();
}
}
//For Android >= 4.1
public void openFileChooser(ValueCallback<Uri> valueCallback, String acceptType, String capture) {
uploadMessage = valueCallback;
if (acceptType.equals("video/*")){
videoUri = takeVedio(videoUri, CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE);
}else if (acceptType.equals("image/*")){
photoUri = takePhoto(photoUri, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}else {
openFileChooserActivity();
}
}
// For Android >= 5.0
@Override
public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) {
uploadMessageAboveL = filePathCallback;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
String[] acceptTypes = fileChooserParams.getAcceptTypes();
if (acceptTypes.length > 0){
String acceptType = acceptTypes[0];
if (acceptType.equals("video/*")){
videoUri = takeVedio(videoUri, CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE);
}else if (acceptType.equals("image/*")){
photoUri = takePhoto(photoUri, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}else {
openFileChooserActivity();
}
}else {
openFileChooserActivity();
}
}else {
openFileChooserActivity();
}
return true;
}
//窗口关闭事件，默认处理关闭activty界面，可以通过ICloseWindow 回到处理对应的逻辑
@Override
public void onCloseWindow(WebView window) {
if (closeWindow !=null){
// closeWindow.closeActivty();
}
// super.onCloseWindow(window);
}
@Override
//扩容
public void onReachedMaxAppCacheSize(long requiredStorage, long quota, WebStorage.QuotaUpdater quotaUpdater) {
quotaUpdater.updateQuota(requiredStorage*2);
}
@Override
public void onConsoleMessage(String message, int lineNumber, String sourceID) {
Log.e("h5端的log", String.format("%s -- From line %s of %s", message, lineNumber, sourceID));
}
private void openFileChooserActivity() {
Intent i=createFileItent();
mContext.startActivityForResult(Intent.createChooser(i, "Image Chooser"), FILE_CHOOSER_RESULT_CODE);
}
/**
* 创建选择图库的intent
* @return
*/
private Intent createFileItent(){
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("*/*");
return intent;
}
protected Uri takeVedio(Uri uri, int code) {
try {
Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
File file = FileUtil.getOutputVideoMediaFile(mContext);
uri = FileUtil.getOutputMediaFileUri(mContext,file);
if (Build.VERSION.SDK_INT >= 24) {
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
}
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
intent.addCategory(Intent.CATEGORY_DEFAULT);
mContext.startActivityForResult(intent, code);
} catch (Exception e) {
e.printStackTrace();
}
return uri;
}
protected Uri takePhoto(Uri uri, int code) {
try {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File file = FileUtil.getOutputMediaFile(mContext);
uri = FileUtil.getOutputMediaFileUri(mContext,file);
if (Build.VERSION.SDK_INT >= 24) {
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
}
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
intent.addCategory(Intent.CATEGORY_DEFAULT);
mContext.startActivityForResult(intent, code);
} catch (Exception e) {
e.printStackTrace();
}
return uri;
}
public void onActivityResult(int requestCode, int resultCode, Intent data){
if (requestCode == FILE_CHOOSER_RESULT_CODE) {
if (null == uploadMessage&& null == uploadMessageAboveL){
return;
}
//上传文件 点取消需要如下设置。 否则再次点击上传文件没反应
if (data == null){
if (uploadMessage != null){
uploadMessage.onReceiveValue(null);
uploadMessage = null;
}
if (uploadMessageAboveL != null){
uploadMessageAboveL.onReceiveValue(null);
uploadMessageAboveL = null;
}
return;
}
if (uploadMessageAboveL != null) {//5.0以上
onActivityResultAboveL(requestCode, resultCode, data);
}else if(uploadMessage != null) {
if (data != null && resultCode == Activity.RESULT_OK ){
Uri result = data.getData();
Log.e("xxx","5.0-result="+result);
uploadMessage.onReceiveValue(result);
uploadMessage = null;
}
}
}else if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE){
if ( photoUri!= null) {
if (uploadMessageAboveL != null){
Uri[] results =new Uri[1];
results[0] = photoUri;
uploadMessageAboveL.onReceiveValue(results);
uploadMessageAboveL = null;
}else if (uploadMessage != null){
uploadMessage.onReceiveValue(photoUri);
uploadMessage = null;
}
}
}else if (requestCode == CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE){
if (videoUri != null) {
if (uploadMessageAboveL != null){
Uri[] results =new Uri[1];
results[0] = videoUri;
uploadMessageAboveL.onReceiveValue(results);
uploadMessageAboveL = null;
}else if (uploadMessage != null){
uploadMessage.onReceiveValue(videoUri);
uploadMessage = null;
}
}
}
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void onActivityResultAboveL(int requestCode, int resultCode, Intent intent) {
Log.e("xxx","5.0+ 返回了");
if (requestCode != FILE_CHOOSER_RESULT_CODE || uploadMessageAboveL == null){
return;
}
Uri[] results = null;
if (resultCode == Activity.RESULT_OK) {
if (intent != null) {
String dataString = intent.getDataString();
ClipData clipData = intent.getClipData();
if (clipData != null) {
results = new Uri[clipData.getItemCount()];
for (int i = 0; i < clipData.getItemCount(); i++) {
ClipData.Item item = clipData.getItemAt(i);
results[i] = item.getUri();
}
}
if (dataString != null)
results = new Uri[]{Uri.parse(dataString)};
}
}
uploadMessageAboveL.onReceiveValue(results);
uploadMessageAboveL = null;
}
}