Create An Android CheckedTextview Programmatically in Android




Target

Hello Readers! In this post, we will learn how to create android checkedTextview programmatically in any android application.

Output

Tutorialwing Android Dynamic CheckedTextView Output Android ChekcedTextview programmatically in android

Tutorialwing Android Dynamic CheckedTextView Output

Getting Started

At First, we will create an android application. Then, we will create and use android checkedTextview programmatically in this application.

1. Creating New Project

Follow the steps below to create a new project. Please ignore the steps if you have already created a new project.

Step Description
1. Open Android Studio.
2. Go to File => New => New Project. Write application name as DynamicCheckedTextview. Then, click next button.
3. Select minimum SDK you need. However, we have selected 17 as minimum SDK. Then, click next button
4. Then, select Empty Activity => click next => click finish.
5. If you have followed above process correctly, you will get a newly created project successfully. However, you can also visit post to create a new project to know steps in detail.

Now, we will modify xml and java file to use android checkedTextView programmatically.

2. Modify values folder

Open res/values/strings.xml file and add below code into it.

<resources>
	<string name="app_name">DynamicCheckedTextView</string>
	<string name="checkedTextView">CheckedTextView</string>
	<string name="checked">checked</string>
	<string name="unchecked">unchecked</string>
	<string name="pre_msg">CheckedTextView is</string>
</resources>

3. Modify Layout Folder

Open res/layout/activity_main.xml file. Then, add below code into it.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
	android:id="@+id/rootContainer"
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	android:gravity="center"
	android:orientation="vertical">

</LinearLayout>

In activity_main.xml file, we have a linearLayout, with id rootContainer, that will act as container for the checkedTextView widget created programmatically in this application.

4. Create Android CheckedTextView Programmatically / Dynamically

Open app/src/main/java/com.tutorialwing.dynamiccheckedtextview/MainActivity.java file and add below code into it.

package com.tutorialwing.dynamiccheckedtextview;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckedTextView;
import android.widget.LinearLayout;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

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

		LinearLayout linearLayout = findViewById(R.id.rootContainer);

		final CheckedTextView checkedTextView = new CheckedTextView(this);
		checkedTextView.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
		checkedTextView.setText(R.string.checkedTextView);
		checkedTextView.setChecked(false);
		checkedTextView.setCheckMarkDrawable(android.R.drawable.checkbox_off_background);

		checkedTextView.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				checkedTextView.setChecked(!checkedTextView.isChecked());
				checkedTextView.setCheckMarkDrawable(checkedTextView.isChecked() ? android.R.drawable.checkbox_on_background : android.R.drawable.checkbox_off_background);

				String msg = getString(R.string.pre_msg) + (checkedTextView.isChecked() ? getString(R.string.checked) : getString(R.string.unchecked));
				Toast.makeText(MainActivity.this, msg, Toast.LENGTH_SHORT).show();
			}
		});

		// Add Checkbox to LinearLayout
		if (linearLayout != null) {
			linearLayout.addView(checkedTextView);
		}
	}
}

In MainActivity.java, we have created android checkedTextview widget programmatically. Then, we have set a click listener that shows a toast message displaying the current status (checked / unchecked) of the checkedTextview widget.

Since AndroidManifest.xml file is very important in any android project. We are also going to see the content inside this file.

AndroidManifest.xml file

Code inside src/main/AndroidManifest.xml file would look like below –

<?xml version="1.0" encoding="utf-8"?>
<manifest package="com.tutorialwing.dynamiccheckedtextview"
		  xmlns:android="http://schemas.android.com/apk/res/android">

	<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>
	</application>

</manifest>

When we run the application, we will output as shown above.

That’s the end of tutorial on Creating Android checkedTextview programmatically in any android application.