当我尝试访问我放入捆绑包中的信息时，为什么我的 Android 活动会强制关闭？
我正在编写一个 Android 应用程序。其中一个活动是 ListActivity，因此当用户选择列表中的某个项目时，我希望将该项目的文本值存储在 Intent/Bundle 中，以便下一个活动知道该值。我的代码如下所示：
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View view,
int position, long id) {
Intent intent = new Intent(view.getContext(), FavoriteEditFromDest.class);
intent.putExtra("com.example.myapp.Name", ((TextView) view).getText());
startActivity(intent);
}
});
}要启动的活动的 onCreate 方法如下所示：
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.favorite_dest_edit);
// nameB is a global string variable defined above.
nameB = savedInstanceState.getString("com.example.myapp.Name");
}当我单击 ListActivity 中列表中的某个项目时，它开始执行 onCreate 代码，但是当它到达以下行时尝试检索字符串值时出现强制关闭对话框。
我没有太多使用捆绑包传递信息的经验，所以我将不胜感激任何和所有的帮助！
I am writing an Android app. One of the activities is a ListActivity, so when the person selects an item in the list I would like the text value of that item to be stored in the Intent/Bundle so that the next activity knows that value. My code looks something like this:
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView parent, View view,
int position, long id) {
Intent intent = new Intent(view.getContext(), FavoriteEditFromDest.class);
intent.putExtra("com.example.myapp.Name", ((TextView) view).getText());
startActivity(intent);
}
});
}The onCreate method for the activity that is to be started looks like this:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.favorite_dest_edit);
// nameB is a global string variable defined above.
nameB = savedInstanceState.getString("com.example.myapp.Name");
}When I click an item from the list in the ListActivity, it begins to execute the onCreate code, but when it gets to the line that tries to retrieve the string value I get a force close dialog.
I don't have much experience passing information with a Bundle, so I would appreciate any and all help!
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评论（3）
应该替换为
尝试一下，看看是否有帮助。
should be replaced with
try that out and see if it helps.
使用
adb logcat、DDMS 或 Eclipse 中的 DDMS 透视图检查堆栈跟踪并查看触发“强制关闭”的异常。在这种情况下，我怀疑您会发现放入
Bundle中的内容不是String，因为getText()不会返回一个字符串。然而，这只是一个猜测——你的堆栈跟踪应该告诉你更多信息。Use
adb logcat, DDMS, or the DDMS perspective in Eclipse to examine your stack trace and see the exception that triggered your "force close".In this case, I suspect that you will find that what you put into the
Bundleis not aString, sincegetText()does not return aString. However, that is just a guess -- your stack trace should tell you more.除其他问题外，
应该是
Among other problems
Should be