package com.example.rajkumar.dynamicapplication;
import android.content.Intent;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import android.widget.LinearLayout;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.xml.sax.InputSource;
import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.Calendar;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
public class MainActivity extends AppCompatActivity {
private String filename = "SampleFile.txt";
private String filepath = "MyFileStorage";
File myExternalFile;
String myData = "";
EditText et;
EditText etAge;
//http://www.androhub.com/android-creating-layouts-programatically/
//https://medium.com/@uddishverma22/creating-dynamic-layouts-in-android-d4008b72f2d
//https://www.javacodegeeks.com/2012/09/android-dynamic-and-xml-layout.html
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
// This will create the LinearLayout
LinearLayout ll = new LinearLayout(this);
ll.setOrientation(LinearLayout.VERTICAL);
// Configuring the width and height of the linear layout.
LayoutParams llLP = new LayoutParams(
//android:layout_width='match_parent' an in xml
LinearLayout.LayoutParams.MATCH_PARENT,
//android:layout_height='wrap_content'
LinearLayout.LayoutParams.MATCH_PARENT);
ll.setLayoutParams(llLP);
TextView tv = new TextView(this);
LayoutParams lp = new LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
///Textview started
tv.setLayoutParams(lp);
//android:text='@string/name'
tv.setText(R.string.name);
//android:padding='@dimen/padding_medium'
tv.setPadding(8, 8, 8, 8);
ll.addView(tv);
///Edittext
et = new EditText(this);
et.setLayoutParams(lp);
et.setHint(R.string.entername);
et.setPadding(8, 8, 8, 8);
ll.addView(et);
//Age
TextView tage = new TextView(this);
tage.setLayoutParams(lp);
//android:text='@string/name'
tage.setText(R.string.Age);
//android:padding='@dimen/padding_medium'
tage.setPadding(8, 8, 8, 8);
ll.addView(tage);
///Edittext Age
etAge = new EditText(this);
etAge.setLayoutParams(lp);
etAge.setHint(R.string.enterage);
etAge.setPadding(8, 8, 8, 8);
ll.addView(etAge);
//Gender
TextView tgender = new TextView(this);
tgender.setLayoutParams(lp);
//android:text='@string/name'
tgender.setText(R.string.Gender);
//android:padding='@dimen/padding_medium'
tgender.setPadding(8, 8, 8, 8);
ll.addView(tgender);
//RadioButtons are always added inside a RadioGroup
RadioGroup radioGroup = new RadioGroup(this);
radioGroup.setOrientation(LinearLayout.HORIZONTAL);
//ll.addView(radioGroup);
//Male radiobutton
RadioButton radioButton = new RadioButton(this);
radioButton.setText(R.string.Male);
radioGroup.addView(radioButton);
//Female radiobutton
RadioButton femaleradioButton = new RadioButton(this);
femaleradioButton.setText(R.string.Female);
radioGroup.addView(femaleradioButton);
ll.addView(radioGroup);
//Year
TextView tyear = new TextView(this);
tyear.setLayoutParams(lp);
//android:text='@string/name'
tyear.setText(R.string.Year);
//android:padding='@dimen/padding_medium'
tyear.setPadding(8, 8, 8, 8);
ll.addView(tyear);
//Spinner
ArrayList<String> years = new ArrayList<String>();
int thisYear = Calendar.getInstance().get(Calendar.YEAR);
for (int i = 1900; i <= thisYear; i++) {
years.add(Integer.toString(i));
}
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, years);
Spinner spinner=new Spinner(this);
spinner.setAdapter(adapter);
spinner.setLayoutParams(lp);
ll.addView(spinner);
////Button
Button bt = new Button(this);
bt.setText(R.string.OtherActivity);
bt.setPadding(8, 8, 8, 8);
ll.addView(bt);
////Button
Button read = new Button(this);
read.setText(R.string.Read);
read.setPadding(8, 8, 8, 8);
ll.addView(read);
//Now finally attach the Linear layout to the current Activity.
setContentView(ll);
//Attach OnClickListener to the button.
bt.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
Toast.makeText(getApplicationContext(),"This is dynamic activity", Toast.LENGTH_LONG).show();
//Intent intent=new Intent(MainActivity.this,activity_androidxml.class);
//startActivity(intent);
try {
FileOutputStream fos = new FileOutputStream(myExternalFile);
fos.write(et.getText().toString().getBytes());
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
et.setText("");
}
});
read.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
try {
FileInputStream fis = new FileInputStream(myExternalFile);
DataInputStream in = new DataInputStream(fis);
BufferedReader br =
new BufferedReader(new InputStreamReader(in));
String strLine;
while ((strLine = br.readLine()) != null) {
myData = myData + strLine;
}
in.close();
} catch (IOException e) {
e.printStackTrace();
}
etAge.setText(myData);
//response.setText("SampleFile.txt data retrieved from External Storage...");
}
});
if (!isExternalStorageAvailable() || isExternalStorageReadOnly()) {
bt.setEnabled(false);
}
else {
String xmlpath=GetFilePath();
Document file= convertStringToDocument(xmlpath);
}
}
private static boolean isExternalStorageReadOnly() {
String extStorageState = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(extStorageState)) {
return true;
}
return false;
}
private static boolean isExternalStorageAvailable() {
String extStorageState = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(extStorageState)) {
return true;
}
return false;
}
private String GetFilePath(){
String databasepath=null;
myExternalFile = new File(getExternalFilesDir(filepath), filename);
if(!myExternalFile.exists()) {
try {
//now create xml
Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();
// create root: <record>
Element root = doc.createElement("Root");
doc.appendChild(root);
// create Transformer object
Transformer transformer = TransformerFactory.newInstance().newTransformer();
StringWriter writer = new StringWriter();
StreamResult result = new StreamResult(writer);
transformer.transform(new DOMSource(doc), result);
//TransformerFactory tfact = TransformerFactory.newInstance();
//Transformer tform = tfact.newTransformer();
//tform.setOutputProperty(OutputKeys.INDENT, "yes");
} catch (ParserConfigurationException e) {
}
catch (TransformerException e) {
}
}
databasepath=myExternalFile.getPath();
return databasepath;
}
private static Document convertStringToDocument(String xmlStr) {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder;
try
{
builder = factory.newDocumentBuilder();
Document doc = builder.parse( new InputSource( new StringReader( xmlStr ) ) );
return doc;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
