In this example:
1. Opening url in webview and show progress for particular page.
2. Show file chooser for Webform file option.
3. Show Camera option in file chooser, capture image from camera and store in sdcard and select image for file option.
4. For an url click open new activity.
5. Open link from webview browser to new browser.
6. Open link from webview browser to webview browser.
2. Show file chooser for Webform file option.
3. Show Camera option in file chooser, capture image from camera and store in sdcard and select image for file option.
4. For an url click open new activity.
5. Open link from webview browser to new browser.
6. Open link from webview browser to webview browser.
FILE : ShowWebView.java
Code explanation defined as comments in code.
package com.androidexample.webview;import java.io.File;import android.app.Activity;import android.app.ProgressDialog;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.os.Environment;import android.os.Parcelable;import android.provider.MediaStore;import android.webkit.ConsoleMessage;import android.webkit.ValueCallback;import android.webkit.WebChromeClient;import android.webkit.WebView;import android.webkit.WebViewClient;import android.webkit.WebSettings.PluginState;import android.widget.Toast;public class ShowWebView extends Activity { //private Button button; private WebView webView; final Activity activity = this; public Uri imageUri; private static final int FILECHOOSER_RESULTCODE = 2888; private ValueCallback<Uri> mUploadMessage; private Uri mCapturedImageURI = null; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.show_web_view); //Get webview webView = (WebView) findViewById(R.id.webView1); // Define url that will open in webview String webViewUrl = "http://www.androidexample.com/media/webview/details.html"; // Javascript inabled on webview webView.getSettings().setJavaScriptEnabled(true); // Other webview options webView.getSettings().setLoadWithOverviewMode(true); //webView.getSettings().setUseWideViewPort(true); //Other webview settings webView.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY); webView.setScrollbarFadingEnabled(false); webView.getSettings().setBuiltInZoomControls(true); webView.getSettings().setPluginState(PluginState.ON); webView.getSettings().setAllowFileAccess(true); webView.getSettings().setSupportZoom(true); //Load url in webview webView.loadUrl(webViewUrl); // Define Webview manage classes startWebView(); } private void startWebView() { // Create new webview Client to show progress dialog // Called When opening a url or click on link // You can create external class extends with WebViewClient // Taking WebViewClient as inner class webView.setWebViewClient(new WebViewClient() { ProgressDialog progressDialog; //If you will not use this method url links are open in new brower not in webview public boolean shouldOverrideUrlLoading(WebView view, String url) { // Check if Url contains ExternalLinks string in url // then open url in new browser // else all webview links will open in webview browser if(url.contains("google")){ // Could be cleverer and use a regex //Open links in new browser view.getContext().startActivity( new Intent(Intent.ACTION_VIEW, Uri.parse(url))); // Here we can open new activity return true; } else { // Stay within this webview and load url view.loadUrl(url); return true; } } //Show loader on url load public void onLoadResource (WebView view, String url) { // if url contains string androidexample // Then show progress Dialog if (progressDialog == null && url.contains("androidexample") ) { // in standard case YourActivity.this progressDialog = new ProgressDialog(ShowWebView.this); progressDialog.setMessage("Loading..."); progressDialog.show(); } } // Called when all page resources loaded public void onPageFinished(WebView view, String url) { try{ // Close progressDialog if (progressDialog.isShowing()) { progressDialog.dismiss(); progressDialog = null; } }catch(Exception exception){ exception.printStackTrace(); } } }); // You can create external class extends with WebChromeClient // Taking WebViewClient as inner class // we will define openFileChooser for select file from camera or sdcard webView.setWebChromeClient(new WebChromeClient() { // openFileChooser for Android 3.0+ public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType){ // Update message mUploadMessage = uploadMsg; try{ // Create AndroidExampleFolder at sdcard File imageStorageDir = new File( Environment.getExternalStoragePublicDirectory( Environment.DIRECTORY_PICTURES) , "AndroidExampleFolder"); if (!imageStorageDir.exists()) { // Create AndroidExampleFolder at sdcard imageStorageDir.mkdirs(); } // Create camera captured image file path and name File file = new File( imageStorageDir + File.separator + "IMG_" + String.valueOf(System.currentTimeMillis()) + ".jpg"); mCapturedImageURI = Uri.fromFile(file); // Camera capture image intent final Intent captureIntent = new Intent( android.provider.MediaStore.ACTION_IMAGE_CAPTURE); captureIntent.putExtra(MediaStore.EXTRA_OUTPUT, mCapturedImageURI); Intent i = new Intent(Intent.ACTION_GET_CONTENT); i.addCategory(Intent.CATEGORY_OPENABLE); i.setType("image/*"); // Create file chooser intent Intent chooserIntent = Intent.createChooser(i, "Image Chooser"); // Set camera intent to file chooser chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS , new Parcelable[] { captureIntent }); // On select image call onActivityResult method of activity startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE); } catch(Exception e){ Toast.makeText(getBaseContext(), "Exception:"+e, Toast.LENGTH_LONG).show(); } } // openFileChooser for Android < 3.0 public void openFileChooser(ValueCallback<Uri> uploadMsg){ openFileChooser(uploadMsg, ""); } //openFileChooser for other Android versions public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) { openFileChooser(uploadMsg, acceptType); } // The webPage has 2 filechoosers and will send a // console message informing what action to perform, // taking a photo or updating the file public boolean onConsoleMessage(ConsoleMessage cm) { onConsoleMessage(cm.message(), cm.lineNumber(), cm.sourceId()); return true; } public void onConsoleMessage(String message, int lineNumber, String sourceID) { //Log.d("androidruntime", "Show console messages, Used for debugging: " + message); } }); // End setWebChromeClient } // Return here when file selected from camera or from SDcard @Override protected void onActivityResult(int requestCode, int resultCode, Intent intent) { if(requestCode==FILECHOOSER_RESULTCODE) { if (null == this.mUploadMessage) { return; } Uri result=null; try{ if (resultCode != RESULT_OK) { result = null; } else { // retrieve from the private variable if the intent is null result = intent == null ? mCapturedImageURI : intent.getData(); } } catch(Exception e) { Toast.makeText(getApplicationContext(), "activity :"+e, Toast.LENGTH_LONG).show(); } mUploadMessage.onReceiveValue(result); mUploadMessage = null; } } // Open previous opened link from history on webview when back button pressed @Override // Detect when the back button is pressed public void onBackPressed() { if(webView.canGoBack()) { webView.goBack(); } else { // Let the system handle the back button super.onBackPressed(); } }} |
FILE : show_web_view.xml
Define webview inside this file.
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <WebView android:id="@+id/webView1" android:layout_width="fill_parent" android:layout_height="fill_parent"/> </LinearLayout> |
FILE : AndroidManifest.xml
Define sdcard and camera permission.
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.androidexample.webview" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8"/> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.CAMERA" /> <uses-feature android:name="android.hardware.camera" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <activity android:label="@string/app_name" android:name=".ShowWebView" android:theme="@android:style/Theme.NoTitleBar"> <intent-filter > <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application></manifest> |
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