[英]how to pass a thread class object from activity to activity using parcelable
[英]How to pass data between activity using parcelable in android studio
我有一個 recyclerview 顯示電影列表,我希望當單擊的項目電影可以使用 parcelable 將數據傳遞給詳細信息
這是我的 viewHolderAdapter
public class MovieVHolder extends RecyclerView.ViewHolder {
TextView mTxtTitleMovie, mTxtDescriptionMovie, mTxtDateMovie;
ImageView mImgPosterMovie;
public MovieVHolder(@NonNull final View itemView) {
super(itemView);
mTxtTitleMovie = itemView.findViewById(R.id.txt_title_movie);
mTxtDescriptionMovie = itemView.findViewById(R.id.txt_desc_movie);
mTxtDateMovie = itemView.findViewById(R.id.txt_date_movie);
mImgPosterMovie = itemView.findViewById(R.id.img_movie);
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent i = new Intent(context, DetailActivity.class);
context.startActivity(i);
}
});
}
public void bind(ListMovieEntity listMovieEntity) {
mTxtTitleMovie.setText(listMovieEntity.getMovieTittle());
mTxtDescriptionMovie.setText(listMovieEntity.getMovieDescription());
mTxtDateMovie.setText(listMovieEntity.getMovieDate());
Glide.with(context)
.load("https://image.tmdb.org/t/p/w185/"+listMovieEntity.getMoviePosterPath())
.into(mImgPosterMovie);
}
}
我在 model class 添加了 parcelable
像這樣改變itemviewclick
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent i = new Intent(context, DetailActivity.class);
//addthis i.putExtra(DetailActivity.MOVIE, entListMovie.get(getPosition()));
context.startActivity(i);
}
});
並在細節上像這樣
添加這個
public static final String MOVIE = "movie";
在方法 onCreate() 添加這個
YourList yourList = getIntent().getParcelableExtra(MOVIE);
之后,只需設置數據
textview.setText(yourList.getBlaBla());
Intent 支持三種數據傳遞方式:
直接:將我們的數據直接放入意圖中
Bundle:創建一個bundle並在此處設置數據
Parcelable:這是一種“序列化”我們的 object 的方式。
傳遞數據:直接
Intent i = new Intent(context, DetailActivity.class);
i.putExtra("title", mTxtTitleMovie.getText().toString();
i.putExtra("surname", edtSurname.getText().toString();
i.putExtra("email", edtEmail.getText().toString();
context.startActivity(i);
捆
Intent i = new Intent(context, DetailActivity.class);
Bundle b = new Bundle();
b.putString("name", edtName.getText().toString());
b.putString("surname", edtSurname.getText().toString());
b.putString("email", edtEmail.getText().toString());
i.putExtra("personBdl", b);
context.startActivity(i);
傳遞數據:Parcelable
假設我們有一個名為 Person 的 class,它包含三個屬性:姓名、姓氏和 email。
現在,如果我們想通過這個 class 它必須像這樣實現Parcelable接口
public class Person implements Parcelable {
private String name;
private String surname;
private String email;
// Get and Set methods
@Override
public int describeContents() {
return hashCode();
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(name);
dest.writeString(surname);
dest.writeString(email);
}
// We reconstruct the object reading from the Parcel data
public Person(Parcel p) {
name = p.readString();
surname = p.readString();
email = p.readString();
}
public Person() {}
// We need to add a Creator
public static final Parcelable.Creator<person> CREATOR = new Parcelable.Creator<person>() {
@Override
public Person createFromParcel(Parcel parcel) {
return new Person(parcel);
}
@Override
public Person[] newArray(int size) {
return new Person[size];
}
};
現在我們簡單地傳遞這樣的數據:
Intent i = new Intent(EditActivity.this, ViewActivity.class);
Person p = new Person();
p.setName(edtName.getText().toString());
p.setSurname(edtSurname.getText().toString());
p.setEmail(edtEmail.getText().toString());
i.putExtra("myPers", p);
startActivity(i);
如您所見,我們只是將 object 人員放入 Intent 中。 當我們收到我們擁有的數據時:
Bundle b = i.getExtras();
Person p = (Person) b.getParcelable("myPers");
String name = p.getName();
String surname = p.getSurname();
String email = p.getEmail();
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