我創建了一個parceable類,並想用它來從碎片中的數據傳輸到B.我很多其他教程做的一樣,但我不能從parceable對象類實例化。它總是說,我必須把'包裹'作爲參數。無法實例parceable對象
這裏我的對象類:
public class DataObject implements Parcelable {
private int number1 = 0;
private int number2 = 0;
private String name = "";
public int getNumber1() {
return number1;
}
public void setNumber1(int number1) {
this.number1 = number1;
}
public int getNumber2() {
return number2;
}
public void setNumber2(int number2) {
this.number2 = number2;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
protected DataObject(Parcel in) {
number1 = in.readInt();
number2 = in.readInt();
name = in.readString();
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(number1);
dest.writeInt(number2);
dest.writeString(name);
}
@SuppressWarnings("unused")
public static final Parcelable.Creator<DataObject> CREATOR = new Parcelable.Creator<DataObject>() {
@Override
public DataObject createFromParcel(Parcel in) {
return new DataObject(in);
}
@Override
public DataObject[] newArray(int size) {
return new DataObject[size];
}
};
}
這裏是我如何使用對象從這種類型的:
DataObject bla = new DataObject();
bla.setNumber1(1);
bla.setNumber2(2);
bla.setName("TestName");
當我將鼠標懸停在紅色突出顯示的構造,它說:
DataObject (Parcel) in DataObject cannot be applied
和編譯器說:
Error:(30, 50) error: constructor PointCardMainData in class PointCardMainData cannot be applied to given types; required: Parcel found: no arguments reason: actual and formal argument lists differ in length
大家有一個想法,缺什麼?我需要在manifest-grader gradle-file中設置一些東西嗎?在構建項目之前我必須做些什麼?
問候
THX。第一方面,我確信我嘗試了你的(和user3374345s)解決方案......我真的很想知道爲什麼它今天工作。有時候,我中有你不得不重新啓動機器人工作室,以獲得正確的行爲...... 在另一方面,我不知道爲什麼在大多數parcealable對象教程,沒有一絲的感覺,你有一個空的構造... – user3806723