使用Android的webview将web app打包成安卓的app和解决安卓webview不支持input type=file问题
在MainActivity.java中编码
public class MainActivity extends Activity { private WebView webview; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //实例化WebView对象 webview = new WebView(this); webview.setWebViewClient(new WebViewClient() { @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { // TODO Auto-generated method stub view.loadUrl(url); return true; } }); webview.setWebChromeClient(new WebChromeClient() { @Override public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) { mUploadCallbackAboveL = filePathCallback; take(); return true; } //<3.0 public void openFileChooser(ValueCallback<Uri> uploadMsg) { mUploadMessage = uploadMsg; take(); } //>3.0+ public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) { mUploadMessage = uploadMsg; take(); } //>4.1.1 public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) { mUploadMessage = uploadMsg; take(); } }); //支持javascript webview.getSettings().setJavaScriptEnabled(true); // 设置可以支持缩放 webview.getSettings().setSupportZoom(true); // 设置出现缩放工具 webview.getSettings().setBuiltInZoomControls(true); //扩大比例的缩放 webview.getSettings().setUseWideViewPort(true); webview.getSettings().setAllowFileAccess(true); //设置可以访问文件 //自适应屏幕 // webview.getSettings().setLayoutAlgorithm(LayoutAlgorithm.SINGLE_COLUMN); webview.getSettings().setLoadWithOverviewMode(true); //设置WebView属性，能够执行Javascript脚本 webview.getSettings().setJavaScriptEnabled(true); //加载需要显示的网页 webview.loadUrl("http://120.25.225.183:8080/schoolbuy/"); //设置Web视图 setContentView(webview); } @Override //设置回退 //覆盖Activity类的onKeyDown(int keyCoder,KeyEvent event)方法 public boolean onKeyDown(int keyCode, KeyEvent event) { if ((keyCode == KeyEvent.KEYCODE_BACK) && webview.canGoBack()) { webview.goBack(); //goBack()表示返回WebView的上一页面 return true; } return false; } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == FILECHOOSER_RESULTCODE) { if (null == mUploadMessage && null == mUploadCallbackAboveL) return; Uri result = data == null || resultCode != RESULT_OK ? null : data.getData(); if (mUploadCallbackAboveL != null) { onActivityResultAboveL(requestCode, resultCode, data); } else if (mUploadMessage != null) { Log.e("result", result + ""); if (result == null) { mUploadMessage.onReceiveValue(imageUri); mUploadMessage = null; Log.e("imageUri", imageUri + ""); } else { mUploadMessage.onReceiveValue(result); mUploadMessage = null; } } } } @SuppressWarnings("null") @TargetApi(Build.VERSION_CODES.LOLLIPOP) private void onActivityResultAboveL(int requestCode, int resultCode, Intent data) { if (requestCode != FILECHOOSER_RESULTCODE || mUploadCallbackAboveL == 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)}; } } if (results != null) { mUploadCallbackAboveL.onReceiveValue(results); mUploadCallbackAboveL = null; } else { results = new Uri[]{imageUri}; mUploadCallbackAboveL.onReceiveValue(results); mUploadCallbackAboveL = null; } return; } private void take() { File imageStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "MyApp"); if (!imageStorageDir.exists()) { imageStorageDir.mkdirs(); } File file = new File(imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg"); imageUri = Uri.fromFile(file); final List<Intent> cameraIntents = new ArrayList<Intent>(); final Intent captureIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); final PackageManager packageManager = getPackageManager(); final List<ResolveInfo> listCam = packageManager.queryIntentActivities(captureIntent, 0); for (ResolveInfo res : listCam) { final String packageName = res.activityInfo.packageName; final Intent i = new Intent(captureIntent); i.setComponent(new ComponentName(res.activityInfo.packageName, res.activityInfo.name)); i.setPackage(packageName); i.putExtra(MediaStore.EXTRA_OUTPUT, imageUri); cameraIntents.add(i); } Intent i = new Intent(Intent.ACTION_GET_CONTENT); i.addCategory(Intent.CATEGORY_OPENABLE); i.setType("image/*"); Intent chooserIntent = Intent.createChooser(i, "Image Chooser"); chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, cameraIntents.toArray(new Parcelable[]{})); startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE); } private ValueCallback<Uri> mUploadMessage;// 表单的数据信息 private ValueCallback<Uri[]> mUploadCallbackAboveL; private final static int FILECHOOSER_RESULTCODE = 1;// 表单的结果回调 private Uri imageUri; }在AndroidManifest.xml文件中添加权限
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="schoolbuy.ecut.cn.schoolbuy"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> <uses-permission android:name="android.permission.CAMERA"/> <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"/> <uses-permission android:name="android.permission.RECORD_AUDIO"/> <uses-permission android:name="android.permission.WAKE_LOCK"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> </manifest>打包好的Android APP不会另外调用打开手机上的默认浏览器去打开网页，而是直接在该APP上展示网页内容