android简单对话框及编辑对话框Dialog

一、简单对话框

以退出登录为例：

 AlertDialog.Builder dialog=new AlertDialog.Builder(mContext);
                dialog.setIcon(R.mipmap.welcome_logo);
                dialog.setTitle("退出登录");
                dialog.setMessage(user_id+"\n你确定要退出登录吗?");
                dialog.setCancelable(false);
                dialog.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Intent intent=new Intent(mContext, LoginActivity.class);
                        getActivity().startActivity(intent);
                    }
                });
                dialog.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        Toast.makeText(mContext,"请继续体验",Toast.LENGTH_SHORT).show();
                    }
                });
                dialog.show();
  }

一、可编辑对话框：

modify_course_dialog.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <EditText
        android:id="@+id/course_name"
        android:layout_width="wrap_content"
        android:layout_alignLeft="@+id/course_remark"
        android:layout_height="wrap_content"
        android:hint="课程名"
        android:layout_alignParentTop="true"
        android:layout_marginTop="15dp"
        android:ems="10"
        />
    <!--获取焦点-->
    <requestFocus />
    <EditText
        android:id="@+id/course_remark"
        android:hint="备注"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/course_name"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="14dp"
        android:ems="10">
    </EditText>
</RelativeLayout>

.java:

 holder.v_modify.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                        AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
                        builder.setIcon(R.mipmap.welcome_logo);
                        builder.setTitle("课程修改");
                        final View view = View.inflate(mContext, R.layout.modify_course_dialog, null);
                        EditText course_name = view.findViewById(R.id.course_name);
                        EditText course_remark = view.findViewById(R.id.course_remark);
                        builder.setView(view);
                        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                String CourseName = course_name.getText().toString();
                                String CourseRemark = course_remark.getText().toString();
                                 Toast.makeText(mContext,"CourseName ="+CourseName +"-----CourseRemark ="+CourseRemark ,Toast.LENGTH_SHORT).show();
                                dialog.cancel();
                            }

                        });

                        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                dialog.cancel();
                            }

                        });
                        builder.show();
                    }
                }

            }
        });