Create PDF using PdfDocument

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The Title : Create PDF using PdfDocument
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Create PDF using PdfDocument


android.graphics.pdf.PdfDocument enables generating a PDF document from native Android content. This example show how to create a two page PDF file using PdfDocument, store as "/sdcard/test.pdf". Then use last example Display PDF using PdfRenderer to view it.

(remark: if you use last example to view the PDF file, you have to change targetPdf = "/sdcard/test.pdf".)


MainActivity.java
package com.blogspot.android_er.androidcreatepdf;

import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.pdf.PdfDocument;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

public class MainActivity extends AppCompatActivity {

Button btnCreate;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

btnCreate = (Button)findViewById(R.id.create);
btnCreate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
createPdf();
}
});

}

private void createPdf(){
// create a new document
PdfDocument document = new PdfDocument();

// crate a page description
PdfDocument.PageInfo pageInfo =
new PdfDocument.PageInfo.Builder(100, 100, 1).create();

// start a page
PdfDocument.Page page = document.startPage(pageInfo);

Canvas canvas = page.getCanvas();

Paint paint = new Paint();
paint.setColor(Color.RED);

canvas.drawCircle(50, 50, 30, paint);

// finish the page
document.finishPage(page);

// Create Page 2
pageInfo = new PdfDocument.PageInfo.Builder(500, 500, 2).create();
page = document.startPage(pageInfo);
canvas = page.getCanvas();
paint = new Paint();
paint.setColor(Color.BLUE);
canvas.drawCircle(200, 200, 100, paint);
document.finishPage(page);

// write the document content
String targetPdf = "/sdcard/test.pdf";
File filePath = new File(targetPdf);
try {
document.writeTo(new FileOutputStream(filePath));
Toast.makeText(this, "Done", Toast.LENGTH_LONG).show();
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(this, "Something wrong: " + e.toString(),
Toast.LENGTH_LONG).show();
}

// close the document
document.close();
}

}


activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="16dp"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:paddingTop="16dp"
android:orientation="vertical"
tools:context="com.blogspot.android_er.androidcreatepdf.MainActivity">

<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="20dp"
android:layout_gravity="center_horizontal"
android:autoLink="web"
android:text="http://android-er.blogspot.com/"
android:textStyle="bold"/>

<Button
android:id="@+id/create"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Create PDF"/>
</LinearLayout>



uses-permission of "android.permission.WRITE_EXTERNAL_STORAGE" is needed in AndroidManifest.xml.
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.blogspot.android_er.androidcreatepdf">

<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.WRITE_EXTERNAL_STORAGE"/>

</manifest>



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