如何通过自定义对象的ArrayList新的活动？ [英] How to pass ArrayList of Custom objects to new activity?

问题描述

我已经创建的类textViewTable在这堂课我现在的储蓄，我想传递给下一个活动相关TextViews数据。

I have created the class textViewTable In this class i am saving data related to TextViews That I want to Pass to Next Activity.

public class TextViewTable implements Serializable {
private String FONT;
private String TEXT;
private float TEXT_SIZE;
private ColorStateList TEXT_COLOR;
private float MARGIN_TOP;
private float MARGIN_BOTTOM;
private float MARGIN_LEFT;
private float MARGIN_RIGHT;
private Boolean BoldFlag;
private Boolean ItalicFlag;
private Boolean NormalFlag;

public TextViewTable(){
}

public TextViewTable(String FONT, String TEXT, float TEXT_SIZE, ColorStateList TEXT_COLOR, float MARGIN_TOP, float MARGIN_BOTTOM, float MARGIN_LEFT, float MARGIN_RIGHT, Boolean boldFlag, Boolean italicFlag, Boolean normalFlag) {
    this.FONT = FONT;
    this.TEXT = TEXT;
    this.TEXT_SIZE = TEXT_SIZE;
    this.TEXT_COLOR = TEXT_COLOR;
    this.MARGIN_TOP = MARGIN_TOP;
    this.MARGIN_BOTTOM = MARGIN_BOTTOM;
    this.MARGIN_LEFT = MARGIN_LEFT;
    this.MARGIN_RIGHT = MARGIN_RIGHT;
    BoldFlag = boldFlag;
    ItalicFlag = italicFlag;
    NormalFlag = normalFlag;
}

}

从我activit我想给TextViewTable类对象的ArrayList。
我用下面的函数发送ArrayList中。但每次我得到空指针异常。请帮助解决这个问题。

From my activit i want to send ArrayList of Objects of TextViewTable class. I have use the below function to send the ArrayList. But every time I am getting null pointer exception. Please Help to solve this.

public void onClick(View view)
    {
        Intent intent = new Intent(getApplicationContext(), displayImage.class);            
        Bundle bundleObject = new Bundle();
        bundleObject.putSerializable("key", textViewsData);

        intent.putExtras(bundleObject);
        try {
            startActivity(intent);
        }catch (Exception e){
            System.out.println(e);
        }
    }
};

推荐答案

您可以按照ρяσѕρєяK公司的答案或者你也可以像下面code：

you can follow ρяσѕρєя K's answer OR also you can do like below code:

public class GeneralClass{

  public static ArrayList<TextViewTable> data = new ArrayList<TextViewTable>();

}

然后就可以存储在第一项活动在上面ArrayList中的数据如下图所示：

and then you can store your data in above arraylist on first activity like below:

Collections.copy(GeneralClass.data,textViewsData);

，现在你可以在你的第二个活动中使用GeneralClass.data的ArrayList

and now you can use GeneralClass.data arraylist in your second activity;

这篇关于如何通过自定义对象的ArrayList新的活动？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！