StartActivityButtonListener 很简洁 值得学习

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        initUI();
        
        
    }

    private void initUI() {
        setContentView(R.layout.main);
        findViewById(R.id.toCheckboxSnippetButton).setOnClickListener(
                new StartActivityButtonListener(
                        MultiSelectionAndEditableActivity.class));
        findViewById(R.id.toProgressbarListSnippetButton).setOnClickListener(
                new StartActivityButtonListener(ProgressbarListActivity.class));
        findViewById(R.id.toPageLoadButton).setOnClickListener(
                new StartActivityButtonListener(PageLoadActivity.class));
        

    }

    class StartActivityButtonListener implements OnClickListener {
        Class<? extends Activity> targetActivity;

        StartActivityButtonListener(Class<? extends Activity> targetActivity) {
            this.targetActivity = targetActivity;
        }       

        @Override
        public void onClick(View v) {
            startActivity(new Intent(MainActivity.this, targetActivity));            
        }

    }

/*改代码是转载的*/