1 Button bt1=(Button)findViewById(R.id.Tbt01);
 2 Button bt2=(Button)findViewById(R.id.Tbt02);
 3 bt1.setOnClickListener(new OnClickListener() {
 4     public void onClick(View v) {
 5         Toast.makeText(Toast0.this, "按钮1短提示",
 6             Toast.LENGTH_SHORT).show();
 7     }
 8 });
 9 bt2.setOnClickListener(new OnClickListener() {
10     public void onClick(View v) {
11         Toast.makeText(Toast0.this, "按钮2长提示",
12             Toast.LENGTH_LONG).show();
13     }
14 });

 1 protected void onCreate(Bundle savedInstanceState) {
 2     super.onCreate(savedInstanceState);
 3     setContentView(R.layout.dialog);
 4     bt = (Button) findViewById(R.id.Dbt);
 5     bt.setOnClickListener(new OnClickListener() {
 6         public void onClick(View v) {
 7             Dialog dialog=new AlertDialog.Builder(Dialog0.this)
 8                 .setTitle("警告")                        //设置标题
 9                 .setMessage("股市有风险，投资需谨慎")    //显示信息
10                 .setIcon(R.drawable.go)                    //设置显示的图片
11                 .create();                                //创建Dialog
12             dialog.show();            //显示对话框
13         }
14 });