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How to display a pdf document into an Android Webview?
This example demonstrate about How to lock the Android device programmatically.
Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.
Step 2 − Add the following code to res/layout/activity_main.xml
<? xml version= "1.0" encoding= "utf-8" ?> <RelativeLayout xmlns: android = "http://schemas.android.com/apk/res/android" xmlns: tools = "http://schemas.android.com/tools" android :layout_width= "match_parent" android :layout_height= "match_parent" android :layout_margin= "16dp" tools :context= ".MainActivity" > <Button android :onClick= "loadPage" android :layout_width= "match_parent" android :layout_height= "wrap_content" android :text= "Load web Page" /> </RelativeLayout>
Step 3 − Add the following code to src/MainActivity
package app.tutorialspoint.com.sample ; import android.os.Bundle ; import android.support.v7.app.AppCompatActivity ; import android.view.View ; import android.webkit.WebView ; public class MainActivity extends AppCompatActivity { @Override protected void onCreate (Bundle savedInstanceState) { super .onCreate(savedInstanceState) ; setContentView(R.layout. activity_main ) ; } public void loadPage (View view) { WebView webview = new WebView( this ) ; webview.getSettings().setJavaScriptEnabled( true ) ; setContentView(webview) ; String pdf = "http://www.adobe.com/devnet/acrobat/pdfs/pdf_open_parameters.pdf" ; webview.loadUrl( "http://drive.google.com/viewerng/viewer?embedded=true&url=" + pdf) ; } }
Step 4 − Add the following code to androidManifest.xml
<? xml version= "1.0" encoding= "utf-8" ?> <manifest xmlns: android = "http://schemas.android.com/apk/res/android" package= "app.tutorialspoint.com.sample" > <application android :allowBackup= "true" android :icon= "@mipmap/ic_launcher" android :label= "@string/app_name" android :roundIcon= "@mipmap/ic_launcher_round" 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> <receiver android :name= ".DeviceAdmin" android :description= "@string/app_description" android :label= "@string/app_name" android :permission= "android.permission.BIND_DEVICE_ADMIN" > <meta-data android :name= "android.app.device_admin" android :resource= "@xml/policies" /> <intent-filter> <action android :name= "android.app.action.DEVICE_ADMIN_ENABLED" /> </intent-filter> </receiver> </application> </manifest>
Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default.
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