Step: 1create a new xml layout with scrollview and LinearLayout . We create child view dynamically through code , added to the LinearLayout.
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17 | <?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/scrollView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="false"
android:scrollbars="none"
android:layout_margin="16dp">
<LinearLayout
android:id="@+id/layout1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
></LinearLayout>
</ScrollView>
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create new Activity class
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151 | package com.pratap.dynamicforms;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.Spinner;
import java.util.ArrayList;
import java.util.List;
import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
/**
* Created by pratap.kesaboyina on 10-06-2015.
*/
public class DynamicForm extends AppCompatActivity {
LinearLayout layout1;
private static int viewsCount = 0;
private List<View> allViews = new ArrayList<View>();
LinearLayout.LayoutParams params;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dynamic_form);
// To set Margin for the child Views
params = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
params.setMargins(5, 5, 5, 5);
// LinearLayout acts as parent Layout , we will add child Views to this Layout dynamically
layout1 = (LinearLayout) findViewById(R.id.layout1);
// Sample Data for Spinner
ArrayList<String> spinnerList = new ArrayList<String>();
spinnerList.add("Select");
spinnerList.add("Hyderabad");
spinnerList.add("Banglore");
spinnerList.add("Chennai");
spinnerList.add("Delhi");
spinnerList.add("Mumbai");
// create edittext dynamically , added to LinearLayout
createEditText("First Name");
createEditText("Last Name");
createEditText("Age");
createEditText("Address");
createSpinner(spinnerList);
createEditText("State");
// create spinners dynamically , added to LinearLayout
// create checkbox dynamically , added to LinearLayout
createCheckBox("Key Contact");
createCheckBox("Target contact");
saveButton();
}
// create a button to show/save data , entered in the Form
private void saveButton() {
Button saveButton = new Button(this);
saveButton.setHeight(WRAP_CONTENT);
saveButton.setText("Save");
saveButton.setOnClickListener(submitListener);
layout1.addView(saveButton,params);
}
// Access the value of the EditText
private View.OnClickListener submitListener = new View.OnClickListener() {
public void onClick(View view) {
StringBuilder stringBuilder = new StringBuilder();
for (View singView : allViews) {
String className = Utils.getClassName(singView.getClass());
if (className.equalsIgnoreCase("EditText")) {
EditText editText = (EditText) singView;
stringBuilder.append(" "+editText.getText().toString());
} else if (className.equalsIgnoreCase("Spinner")) {
Spinner spiner = (Spinner) singView;
stringBuilder.append(" "+spiner.getSelectedItem());
}
else if (className.equalsIgnoreCase("CheckBox")) {
CheckBox checkBox = (CheckBox) singView;
stringBuilder.append(" "+checkBox.isChecked());
}
}
Log.i("All Data ", stringBuilder.toString());
Utils.showAlertDialog(view.getContext(), "Data", stringBuilder.toString());
}
};
public void createEditText(String hint) {
EditText editText = new EditText(this);
editText.setId(viewsCount++);
editText.setHint(hint);
allViews.add(editText);
layout1.addView(editText,params);
}
public void createSpinner(List<String> spinnerList) {
Spinner spinner = new Spinner(this);
spinner.setId(viewsCount++);
spinner.setBackgroundResource(R.drawable.dropdown_normal_holo_light);
ArrayAdapter<String> spinnerArrayAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, spinnerList);
spinner.setAdapter(spinnerArrayAdapter);
allViews.add(spinner);
layout1.addView(spinner,params);
}
public void createCheckBox(String label) {
final CheckBox checkBox = new CheckBox(this);
checkBox.setId(viewsCount++);
checkBox.setText(label);
checkBox.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
}
});
allViews.add(checkBox);
layout1.addView(checkBox,params);
}
}
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39 | package com.pratap.dynamicforms;
import android.app.AlertDialog;
import android.content.Context;
import android.util.Log;
import android.view.Gravity;
import android.widget.Toast;
public class Utils
{
public static void showAlertDialog(Context context, String title,
String message) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
if (title != null)
builder.setTitle(title);
builder.setMessage(message);
builder.setNegativeButton("OK", null);
builder.show();
}
/**
*
* @param c
* @return
*/
public static String getClassName(Class c) {
String className = c.getName();
int firstChar;
firstChar = className.lastIndexOf('.') + 1;
if (firstChar > 0) {
className = className.substring(firstChar);
}
return className;
}
}
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