Friday, October 5, 2012

Code Layout Example in Android Programming

This example shows how you can create your own layout through code instead of xml.
Algorithm:
1.) Create a new project by File-> New -> Android Project name it CodeLayoutExample.
2.) Run for output.
Steps:
1.) Create a project named CodeLayoutExample and set the information as stated in the image.
Build Target: Android 4.0
Application Name: CodeLayoutExample
Package Name: com. example. CodeLayoutExample
Activity Name: CodeLayoutExample
Min SDK Version: 11
2.) Open CodeLayoutExample.java file and write following code there:
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package com.example.codelayoutexample;
 
import android.app.ActionBar.LayoutParams;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
 
public class CodeLayoutExample extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        LayoutParams params1 = new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.WRAP_CONTENT);
 
        TextView text = new TextView(this);
        text.setText("I am TextView");
        text.setLayoutParams(params1);
        EditText edit = new EditText(this);
        edit.setHint("This is EditView....");
        edit.setLayoutParams(params1);
        Button button = new Button(this);
        button.setText("Click me");
        button.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast makeText = Toast.makeText(v.getContext(), "Clicked", Toast.LENGTH_SHORT);
                makeText.show();
            }
        });
        LinearLayout layout = new LinearLayout(this);
        layout.setOrientation(LinearLayout.VERTICAL);
        layout.setPadding(10, 10, 10, 10);
        layout.addView(text);
        layout.addView(edit);
        layout.addView(button);
        setContentView(layout);
    }
}
3.) Compile and build the project.
Output

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