背景：集成了一个实名认证的网页，iOS正常但Android点击没有反应，首页想着是webview的某些协议没有实现，于是在网上找到了相关资料，我们简单记录一下核心代码。
1.权限配置
<uses-permission android:name="android.permission.CAMERA" /> <uses-permission android:name="android.permission.RECORD_AUDIO"/> <uses-permission android:name="android.permission.WAKE_LOCK" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
2.初始化页面
public class WebViewActivity extends BaseActivity {
private PaxWebChromeClient chromeClient;
private String mUrl;
private WebView webView;
public static void start(Context context, String url) {
Intent intent = new Intent(context, WebViewActivity.class);
intent.putExtra("url", url);
context.startActivity(intent);
}
@Override
public int getLayoutId() {
return R.layout.activity_webview;
}
@Override
protected void initView(View rootView) {
webView = (WebView) findViewById(R.id.webview);
Intent intent = getIntent();
mUrl = intent.getStringExtra("url");
chromeClient = new PaxWebChromeClient(this);
initWebViewSettings();
webView.setWebChromeClient(chromeClient);
webView.setWebViewClient(new MyWebViewClient());
webView.loadUrl(mUrl);
initChildInfo();
}
private void initWebViewSettings() {
if (webView == null) {
throw new NullPointerException("webview is null. please use initWebView(WebView webView) method");
}
webView.requestFocusFromTouch();// 支持获取手势焦点，输入用户名、密码或其他
String ua = webView.getSettings().getUserAgentString();
webView.getSettings().setUserAgentString(ua+ "zdgj_1.0.0");
WebSettings webSettings = webView.getSettings();
webSettings.setDisplayZoomControls(false); //隐藏原生的缩放控件
webSettings.setJavaScriptEnabled(true);//支持js
webSettings.setJavaScriptCanOpenWindowsAutomatically(true); //支持通过JS打开新窗口
webSettings.setDatabaseEnabled(false);// 数据库缓存
webSettings.setAppCacheEnabled(false);// 打开缓存
webSettings.setDomStorageEnabled(true);// 打开dom storage缓存
webSettings.setAllowFileAccess(true); //设置可以访问文件
webSettings.setAllowContentAccess(true); // 是否可访问Content Provider的资源，默认值 true
webSettings.setAllowFileAccess(true); // 是否可访问本地文件，默认值 true
webSettings.setJavaScriptEnabled(true);// 允许网页与JS交互
webSettings.setRenderPriority(WebSettings.RenderPriority.HIGH);// 提高渲染级别
webSettings.setLoadsImagesAutomatically(true);// 自动加载网络图片
webSettings.setDefaultTextEncodingName("utf-8");// 设置默认编码方式
// 是否允许通过file url加载的Javascript读取本地文件，默认值 false
webSettings.setAllowFileAccessFromFileURLs(false);
// 是否允许通过file url加载的Javascript读取全部资源(包括文件,http,https)，默认值 false
webSettings.setAllowUniversalAccessFromFileURLs(false);
// 支持缩放
webSettings.setSupportZoom(true);
webSettings.setCacheMode(WebSettings.LOAD_NO_CACHE);
webSettings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.SINGLE_COLUMN);// 布局方式
}
protected void initChildInfo() {
webView.addJavascriptInterface(new onJavaScriptInterface(), "android");
}
private class onJavaScriptInterface {
/**
* 返回上个界面
*/
@JavascriptInterface
public void finishView() {
webView.post(new Runnable() {
@Override
public void run() {
finish();
}
});
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
chromeClient.onActivityResult(requestCode, resultCode, data);
super.onActivityResult(requestCode, resultCode, data);
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// 处理返回键，在webview界面，按下返回键，不退出程序
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (webView.canGoBack()) {
webView.goBack();
return true;
} else {
onActivityBackPressed();
}
}
return super.onKeyDown(keyCode, event);
}
@Override
public void onPause() {
super.onPause();
webView.onPause();
}
@Override
public void onResume() {
super.onResume();
webView.onResume();
}
@Override
public void onDestroy() {
super.onDestroy();
try {
webView.stopLoading();
webView.getSettings().setJavaScriptEnabled(false);
webView.clearHistory();
webView.removeAllViews();
webView.destroy();
} catch (Exception e) {
}
}
private class MyWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
@Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
hideStatusView();
}
}
}
3.核心区分拍照还是录相
public class PaxWebChromeClient extends WebChromeClient {
private static final String TAG = "PaxWebChromeClient";
private final static int VIDEO_REQUEST = 0x11;
private final static int PHOTO_REQUEST = 0x22;
private Activity mActivity;
private ValueCallback<Uri> uploadFile;//定义接受返回值
private ValueCallback<Uri[]> uploadFiles;
private Uri imageUri;
public PaxWebChromeClient(@NonNull Activity activity) {
this.mActivity = activity;
}
@Override
public void onProgressChanged(WebView view, int newProgress) {
super.onProgressChanged(view, newProgress);
}
@Override
public void onReceivedTitle(WebView view, String title) {
super.onReceivedTitle(view, title);
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@Override
public void onPermissionRequest(PermissionRequest request) {
request.grant(request.getResources());
}
// For Android 3.0+
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {
this.uploadFile = uploadMsg;
openCamera(acceptType);
}
// For Android < 3.0
public void openFileChooser(ValueCallback<Uri> uploadMsgs) {
this.uploadFile = uploadMsgs;
}
// For Android > 4.1.1
//@Override
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
this.uploadFile = uploadMsg;
openCamera(acceptType);
}
// For Android >= 5.0
@Override
@SuppressLint("NewApi")
public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) {
this.uploadFiles = filePathCallback;
String[] acceptTypes = fileChooserParams.getAcceptTypes();
for (int i = 0; i < acceptTypes.length; i++) {
LogUtils.e("类型类型类型:" + acceptTypes[i]);
}
if (acceptTypes.length > 0) {
openCamera(acceptTypes[0]);
} else {
LogUtils.e("类型为空");
}
return true;
}
private void openCamera(String accept) {
if (accept.contains("image")) {// image/*
// File fileUri = new File(Environment.getExternalStorageDirectory().getPath() + "/" + SystemClock.currentThreadTimeMillis() + ".jpg");
// imageUri = Uri.fromFile(fileUri);
// if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
// imageUri = FileProvider.getUriForFile(mFragment.getActivity(), "com.mgyb.suning" + ".fileprovider", fileUri);//通过FileProvider创建一个content类型的Uri
// }
// PhotoUtils.takePicture(mFragment.getActivity(), imageUri, PHOTO_REQUEST);
// 指定拍照存储位置的方式调起相机
String filePath = Environment.getExternalStorageDirectory() + File.separator
+ Environment.DIRECTORY_PICTURES + File.separator;
String fileName = "IMG_" + DateFormat.format("yyyyMMdd_hhmmss", Calendar.getInstance(Locale.CHINA)) + ".jpg";
imageUri = Uri.fromFile(new File(filePath + fileName));
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
mActivity.startActivityForResult(intent, PHOTO_REQUEST);
} else if (accept.contains("video")) {// video/*
Intent intent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
// set the video file name
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 0.5);
//限制时长
intent.putExtra(MediaStore.EXTRA_DURATION_LIMIT, 5);
//开启摄像机
mActivity.startActivityForResult(intent, VIDEO_REQUEST);
}
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
switch (requestCode) {
case VIDEO_REQUEST:
if (null != uploadFile) {
Uri result = data == null || resultCode != RESULT_OK ? null : data.getData();
uploadFile.onReceiveValue(result);
uploadFile = null;
}
if (null != uploadFiles) {
Uri result = data == null || resultCode != RESULT_OK ? null : data.getData();
uploadFiles.onReceiveValue(new Uri[]{result});
uploadFiles = null;
}
break;
case PHOTO_REQUEST:
if (null == uploadFile && null == uploadFiles) return;
Uri result = data == null || resultCode != RESULT_OK ? null : data.getData();
if (uploadFiles != null) {
onActivityResultAboveL(requestCode, resultCode, data);
} else if (uploadFile != null) {
uploadFile.onReceiveValue(result);
uploadFile = null;
}
break;
default:
break;
}
} else if (resultCode == Activity.RESULT_CANCELED) {
if (null != uploadFile) {
uploadFile.onReceiveValue(null);
uploadFile = null;
}
if (null != uploadFiles) {
uploadFiles.onReceiveValue(null);
uploadFiles = null;
}
}
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void onActivityResultAboveL(int requestCode, int resultCode, Intent data) {
if (requestCode != PHOTO_REQUEST || uploadFiles == null) {
return;
}
Uri[] results = null;
if (resultCode == Activity.RESULT_OK) {
if (data == null) {
results = new Uri[]{imageUri};
} else {
String dataString = data.getDataString();
ClipData clipData = data.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)};
}
}
uploadFiles.onReceiveValue(results);
uploadFiles = null;
}
}