Android Common Controls and Event Handling

In Android development, you may need custom layouts. For example, apps often require a common title bar. However, the built-in options may not meet your needs, so you have to implement one yourself. Since an app typically contains multiple Activities, it is common practice to define a CommonTitle for better reusability. This article demonstrates a custom CommonTitle implementation.

Create a new layout

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<!--?xml version="1.0" encoding="utf-8"?-->
<button>
</button>

Create a new CommonTitle class extending LinearLayout

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package com.example.uicustomviews;

import android.app.Activity;
import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.Toast;

public class CommonTitle extends LinearLayout {
    public CommonTitle(Context context, AttributeSet attrs) {
        super(context, attrs);
        LayoutInflater.from(context).inflate(R.layout.commontitle, this);

        Button backButton = (Button)findViewById(R.id.backButton);
        backButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {
                // TODO Auto-generated method stub
                ((Activity)getContext()).finish();
            }
        });

        Button editButton = (Button)findViewById(R.id.editButton);
        editButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View view) {
                // TODO Auto-generated method stub
                Toast.makeText(getContext(), "Please edit the context", Toast.LENGTH_SHORT).show();
            }
        });
    }
}

Include your custom CommonTitle in the Activity that needs it
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The result looks like this:
QQ截图20150831220854