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

        button = (Button) findViewById(R.id.button);

        button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                Toast toast = new Toast(MainActivity.this);

                View view = LayoutInflater.from(MainActivity.this).inflate(R.layout.toast, null);

                ImageView imageView = (ImageView) view.findViewById(R.id.image);
                imageView.setImageResource(R.drawable.a1);

                // 居中显示
                toast.setGravity(Gravity.CENTER, 0, 0);

                // 加载自定义布局
                toast.setView(view);
                toast.show();
            }
        });
    }

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal" >

    <ImageView
        android:id="@+id/image"
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:layout_marginRight="10dp" />

    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:text="自定义吐司通知"
        android:textColor="#000000" />

</LinearLayout>