java - 将bundle.getString()的结果分配给String会引发ClassCastException

我有一个名为Place Object的spiliaBeach实例，该实例接受您在下面看到的参数：

public PlaceObject spiliaBeach = new PlaceObject(R.string.spilia_beach,R.string.spilia_description,"2 Km from the Port",R.string.beach_category);

PlaceObject.java类：

private int name = 0;
private int description = 0;
private String locationDistance = "distance";
private int category = 0;

PlaceObject(int name, int description, String locationDistance, int category) {
    this.name = name;
    this.description = description;
    this.locationDistance = locationDistance;
    this.category = category;
}

在MainActivity中，我将数据通过Bundle传递给我的DetailsActivity，如下所示：

Intent detailsIntent = new Intent(this, DetailsActivity.class);
Bundle intentBundle = new Bundle();
intentBundle.putInt("name",beachDB.spiliaBeach.getName());
intentBundle.putInt("description",beachDB.spiliaBeach.getDescription());
intentBundle.putString("distance",beachDB.spiliaBeach.getLocationDistance());
//Log.d(TAG,"Location distance : " + beachDB.spiliaBeach.getLocationDistance());
//intentBundle.putInt("category",beachDB.spiliaBeach.getCategory());
detailsIntent.putExtra("data",intentBundle);
startActivity(detailsIntent);

并尝试在onCreate()的DetailsActivity中像这样检索它：

private void getIntentData(Intent intent) {
    Bundle dataBundle = intent.getBundleExtra("data");
    if(dataBundle != null) {
        name = dataBundle.getInt(NAME_KEY);
        description = dataBundle.getInt(DESC_KEY);
        locationDistance = dataBundle.getString(LOC_DIST_KEY);
        Log.d(TAG, "location distance : " + locationDistance + '\n' + "description : " + description);
    } else {
        Log.d(TAG,"Bundle is null");
    }
}

但是logcat说locationDistance变量是null并抛出ClassCastException说当直接在该行中没有整数时，返回的字符串不能转换为整数。有什么想法吗？

最佳答案

将您的PlaceObject类声明为Parcelable，并按照指南https://www.vogella.com/tutorials/AndroidParcelable/article.html实施所有必需的方法

然后，您将能够将对象另存为

intentBundle.putParcelable(placeObject);

并将其检索为

Bundle dataBundle = getIntent().getExtras();
PlaceObject object = (PlaceObject) dataBundle.getParcelable(KEY);

编辑：您传递R.string.spilia_beach这是整数id，为了获取字符串，请使用getString（R.string.spilia_beach）等