android 对话框

确认取消对话框

public class MainActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    public void click1(View v) {
         //使用Builder来创建
        AlertDialog.Builder builder = new Builder(this);
        builder.setIcon(android.R.drawable.alert_dark_frame);
        builder.setTitle("欲练此功");
        builder.setMessage("林平之,想清楚哦?");
        //设置确定按钮
        builder.setPositiveButton("必须练", new OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, "你即将成为天下第一", 0).show();
            }
        });
        //设置取消按钮
        builder.setNegativeButton("你练我就练", new OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, "SB,咋不练", 0).show();
            }
        });
        //使用创建器,生成一个对话框
        AlertDialog dialog = builder.create();
        dialog.show();
    }
}  

单选对话框

public class MainActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    
    public void click2(View v) {
        AlertDialog.Builder builder = new Builder(this);
        builder.setIcon(android.R.drawable.alert_dark_frame);
        builder.setTitle("请选择性别");
        final String[] items = new String[] { "男", "女" };
        builder.setSingleChoiceItems(items, -1, new OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this, "您选择的是:" + items[which], 0).show();
                  //隐藏对话框
                dialog.dismiss();
            }
        });
        builder.show();
    }
}  

多选对话框

public class MainActivity extends Activity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    public void click3(View v) {
        AlertDialog.Builder builder = new Builder(this);
        builder.setIcon(android.R.drawable.alert_dark_frame);
        builder.setTitle("请选择性别");
        final String[] items = new String[] { "速度快", "收到", "第几个", "都是", "打鼓" };
        final boolean[] checkedItem = new boolean[] { true, true, false, false,
                false };
        builder.setMultiChoiceItems(items, checkedItem,
                new OnMultiChoiceClickListener() {
                    // 用户点击的条目下标
                    // 用户是选中条目还是取消条目
                    @Override
                    public void onClick(DialogInterface dialog, int which,
                            boolean isChecked) {
                        checkedItem[which] = isChecked;
                    }
                });
        builder.setPositiveButton("确定", new OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                StringBuffer buf = new StringBuffer();
                for (int i = 0, len = items.length; i < len; i++) {
                    if (checkedItem[i]) {
                        buf.append(items[i] + ",");
                    }
                }
                Toast.makeText(MainActivity.this, buf.toString(), 0).show();
                dialog.dismiss();
            }
        });
        builder.setNegativeButton("取消", new OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                dialog.dismiss();
            }
        });
        builder.show();
    }
}