// 1. 创建AlertDialog 构造器
AlertDialog.Builder builder = new AlertDialog.Builder(MoreActivity.this);
// 设置dialog的组成部分
builder.setIcon(R.drawable.more_delete);//图标
builder.setTitle("温馨提示");//标题
// 2. 设置内容
builder.setMessage("确定要清空数据嘛?");
// 3. 设置点击按钮
builder.setPositiveButton("否", new DialogInterface.OnClickListener() {
  @Override
  public void onClick(DialogInterface dialog, int which) {
                // 点击逻辑
    }
});
 builder.setNegativeButton("是", new     DialogInterface.OnClickListener() {
            @Override
  public void onClick(DialogInterface dialog, int which) {
                // 不退出
                finish();
            }
});
// 4. 组合各部分后显示
builder.create().show();

id=0;
final int [] col={Color.RED,Color.YELLOW,Color.GREEN,Color.BLUE,Color.WHITE,Color.BLACK};
final String []s={"红色","黄色","绿色","蓝色","白色","黑色"};
AlertDialog.Builder DanItem = new AlertDialog.Builder(PaintActivity.this);
DanItem.setTitle("选择想要使用的颜色");
DanItem.setSingleChoiceItems(s, -1, new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                id =which;
            }
        });
        DanItem.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which){
                //点击事件
            }
        });
        DanItem.create().show();

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <EditText
        android:id="@+id/dialog_et"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        />
</LinearLayout>

AlertDialog.Builder customizeDialog =
                new AlertDialog.Builder(getContext());
        final View dialogView = LayoutInflater.from(getContext())
                .inflate(R.layout.dialog,null);//适配自己写的页面
        customizeDialog.setTitle("请输入内容");//标题
        customizeDialog.setView(dialogView);//设置页面展示
        //设置按钮和点击事件
        customizeDialog.setPositiveButton("确定",
                new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        // 获取EditView中的输入内容
                        EditText edit_text =
                                (EditText) dialogView.findViewById(R.id.dialog_et);
                        Toast.makeText(getContext(),
                                edit_text.getText().toString(),
                                Toast.LENGTH_SHORT).show();
                        String bz=edit_text.getText().toString();
                        System.out.println(bz);
                        accountData.setBz(bz);
                        tv_bz.setText(bz);
                    }
                });
customizeDialog.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                dialogInterface.cancel();
            }
        });
        customizeDialog.show();