Question

在我的应用中，我希望在方向改变时旋转图像，

为了做到这一点，我尝试了这段代码片段;

from django.db import models

# Create your models here.
class Teachers(models.Model):
    teacher_name = models.CharField(max_length=255)

    def __str__(self):
        return self.teacher_name

class Students(models.Model):
    teacher = models.ForeignKey(Teachers,related_name="students_teachers")
    student_rollno = models.IntegerField()
    student_name = models.CharField(max_length=255)
    student_last_name = models.CharField(max_length=255)

    def __str__(self):
        return self.student_name

class Subjects(models.Model):
    teacher = models.ForeignKey(Teachers,related_name="subjects_teachers")
    student = models.ForeignKey(Students,related_name="subjects_students")
    book_name = models.CharField(max_length=255)
    book_description = models.CharField(max_length=255)
    book_author = models.CharField(max_length=255)

    def __str__(self):
        return self.book_name

这样工作正常，但它只检查运行时的方向并根据图像的方向旋转图像，我需要实时检查设备的方向，并希望将图像旋转到横向模式设备是横向的，反之亦然。任何人都可以帮助我吗？提前谢谢。

Answer 1

var maxDate = Math.max.apply(Math, obj.reportsArray.map(function (o)
{
    return o.UpdatedDate.valueOf(); // <-- here you need the convertion of Date object
}))

Answer 2

ON configuration changed u can detect like this; u will get a call back;

    @Override
public void onConfigurationChanged(Configuration newConfig) {
    super.onConfigurationChanged(newConfig);

    // Checks the orientation of the screen
    if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
        Toast.makeText(this, "landscape", Toast.LENGTH_SHORT).show();
        getImageOrientation();
        rotateImage();

    } else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){
        Toast.makeText(this, "portrait", Toast.LENGTH_SHORT).show();
        getImageOrientation();
        rotateImage();
    }
}

当方向发生变化时，是否可以旋转图像视图？在Android中

3 个答案: