Java Android：如何使用ContextMenu制作一个可点击的列表视图？

我有一个可单击的

列表视图

，并尝试为项目创建上下文菜单，但如果我第一次长时间单击，它会激活

onListItemClick

方法。下次它工作的时候。 如果我用

openContextMenu

激活上下文菜单，它会抛出一个

stackoverflowerrror

我解决了我的问题！请参阅本帖末尾

我的活动：

@Override
public void onCreate(Bundle icicle) {

    super.onCreate(icicle);
    setContentView(R.layout.search);

    getWords(getIntent());      
}

@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id); 
        String lemma = (item.get(position));

        Intent intent = new Intent(this, EntryActivity.class)
            .putExtra(CL.DOC, doc)
            .putExtra(CL.ENTRY, lemma);
    startActivity(intent);
}

public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
    super.onCreateContextMenu(menu, v, menuInfo);
    menu.setHeaderTitle("Eintrag");
    getMenuInflater().inflate(R.menu.context, menu);
}

public boolean onContextItemSelected(MenuItem item) {
    //TODO: switch
    return super.onContextItemSelected(item);
}

private void getWords(Intent intent) {
    doc = (CLDocument)intent.getSerializableExtra(CL.DOC);
    item = doc.getEntries();

    ArrayAdapter<String> fileList = 
        new ArrayAdapter<String>(this, R.layout.row, item);
    setListAdapter(fileList);   

    getListView().setOnItemLongClickListener(new OnItemLongClickListener() {    
        @Override
        public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
            registerForContextMenu(view);
            //openContextMenu(view);        
            return false;
        }
    });
}

我更改了方法

getWords

和

onCreateContextMenu

，现在它可以工作了：

private void getWords(Intent intent) {
    doc = (CLDocument)intent.getSerializableExtra(CL.DOC);
    item = doc.getEntries();

    ArrayAdapter<String> fileList = 
            new ArrayAdapter<String>(this, R.layout.row, item);
    setListAdapter(fileList);   

    registerForContextMenu(getListView());

//      getListView().setOnItemLongClickListener(new OnItemLongClickListener() {    
//          @Override
//          public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
//              registerForContextMenu(view);
//                      
//              return false;
//          }
//      });


}

public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
    super.onCreateContextMenu(menu, v, menuInfo);
    AdapterView.AdapterContextMenuInfo info = 
            (AdapterView.AdapterContextMenuInfo)menuInfo;
    menu.setHeaderTitle(item.get(info.position));
    getMenuInflater().inflate(R.menu.context, menu);

}

private void getWords（意图）{
doc=（CLDocument）intent.getSerializableExtra（CL.doc）；
item=doc.getEntries（）；
ArrayAdapter文件列表=
新阵列适配器（此，R.layout.row，项目）；
setListAdapter（文件列表）；
registerForContextMenu（getListView（））；
//getListView（）.setOnItemLongClickListener（新的OnItemLongClickListener（）{
//@覆盖
//公共布尔值长单击（AdapterView父项、视图、整型位置、长id）{
//registerForContextMenu（视图）；
//                      
//返回false；
//          }
//      });
}
public void onCreateContextMenu（ContextMenu菜单、视图v、ContextMenuInfo菜单信息）{
super.onCreateContextMenu（menu，v，menuInfo）；
AdapterView.AdapterContextMenuInfo信息=
（AdapterView.AdapterContextMenuInfo）menuInfo；
menu.setHeaderTitle（item.get（info.position））；
getMenuInflater（）.充气（R.menu.context，menu）；
}

---

所以感谢所有帮助我的人

您必须在活动的

onCreate（）

回调中使用

ListView

作为参数调用

registerForContextMenu

。

此处：

getListView（）.setOnItemLongClickListener（…）

长时间单击后，注册上下文菜单（

registerForContextMenu（view）

），因此，它只会在下一次起作用。但是，如果您希望上下文菜单从一开始就工作，您应该更早地调用它，例如在调用

registerForContextMenu（getListView（））

方法之前。

什么是项？？？请把你的日志贴出来我指的是清单上的项目。

04-17 11:31:06.103: D/dalvikvm(279): GC_FOR_MALLOC freed 5691 objects / 348744 bytes in 65ms
04-17 11:31:08.553: I/dalvikvm(279): threadid=1: stack overflow on call to Landroid/widget/AbsListView;.showContextMenuForChild:ZL
04-17 11:31:08.553: I/dalvikvm(279):   method requires 36+20+24=80 bytes, fp is 0x42089340 (64 left)
04-17 11:31:08.564: I/dalvikvm(279):   expanding stack end (0x42089300 to 0x42089000)
04-17 11:31:08.564: I/dalvikvm(279): Shrank stack (to 0x42089300, curFrame is 0x4208beb8)
04-17 11:31:08.573: D/AndroidRuntime(279): Shutting down VM
04-17 11:31:08.573: W/dalvikvm(279): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
04-17 11:31:08.703: D/dalvikvm(279): GC_FOR_MALLOC freed 7370 objects / 493888 bytes in 50ms
04-17 11:31:08.733: E/AndroidRuntime(279): FATAL EXCEPTION: main
04-17 11:31:08.733: E/AndroidRuntime(279): java.lang.StackOverflowError
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.view.View.showContextMenu(View.java:2444)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.app.Activity.openContextMenu(Activity.java:2390)
04-17 11:31:08.733: E/AndroidRuntime(279):  at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.view.View.showContextMenu(View.java:2444)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.app.Activity.openContextMenu(Activity.java:2390)
04-17 11:31:08.733: E/AndroidRuntime(279):  at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.view.View.showContextMenu(View.java:2444)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.app.Activity.openContextMenu(Activity.java:2390)
04-17 11:31:08.733: E/AndroidRuntime(279):  at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.view.View.showContextMenu(View.java:2444)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.app.Activity.openContextMenu(Activity.java:2390)
04-17 11:31:08.733: E/AndroidRuntime(279):  at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.view.View.showContextMenu(View.java:2444)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.app.Activity.openContextMenu(Activity.java:2390)
04-17 11:31:08.733: E/AndroidRuntime(279):  at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.view.View.showContextMenu(View.java:2444)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.app.Activity.openContextMenu(Activity.java:2390)
04-17 11:31:08.733: E/AndroidRuntime(279):  at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.view.View.showContextMenu(View.java:2444)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.app.Activity.openContextMenu(Activity.java:2390)
04-17 11:31:08.733: E/AndroidRuntime(279):  at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.view.View.showContextMenu(View.java:2444)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.app.Activity.openContextMenu(Activity.java:2390)
04-17 11:31:08.733: E/AndroidRuntime(279):  at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.view.View.showContextMenu(View.java:2444)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.app.Activity.openContextMenu(Activity.java:2390)
04-17 11:31:08.733: E/AndroidRuntime(279):  at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.view.View.showContextMenu(View.java:2444)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.app.Activity.openContextMenu(Activity.java:2390)
04-17 11:31:08.733: E/AndroidRuntime(279):  at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.view.View.showContextMenu(View.java:2444)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.app.Activity.openContextMenu(Activity.java:2390)
04-17 11:31:08.733: E/AndroidRuntime(279):  at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.view.View.showContextMenu(View.java:2444)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.app.Activity.openContextMenu(Activity.java:2390)
04-17 11:31:08.733: E/AndroidRuntime(279):  at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.view.View.showContextMenu(View.java:2444)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.app.Activity.openContextMenu(Activity.java:2390)
04-17 11:31:08.733: E/AndroidRuntime(279):  at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.view.View.showContextMenu(View.java:2444)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.app.Activity.openContextMenu(Activity.java:2390)
04-17 11:31:08.733: E/AndroidRuntime(279):  at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.widget.AbsListView.showContextMenuForChild(AbsListView.java:1779)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.view.View.showContextMenu(View.java:2444)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.app.Activity.openContextMenu(Activity.java:2390)
04-17 11:31:08.733: E/AndroidRuntime(279):  at de.solich.cldic.SearchActivity$1.onItemLongClick(SearchActivity.java:99)
04-17 11:31:08.733: E/AndroidRuntime(279):  at android.widget.AbsListView.showC
04-17 11:31:08.823: D/dalvikvm(279): GC_FOR_MALLOC freed 3648 objects / 486736 bytes in 50ms

private void getWords(Intent intent) {
    doc = (CLDocument)intent.getSerializableExtra(CL.DOC);
    item = doc.getEntries();

    ArrayAdapter<String> fileList = 
            new ArrayAdapter<String>(this, R.layout.row, item);
    setListAdapter(fileList);   

    registerForContextMenu(getListView());

//      getListView().setOnItemLongClickListener(new OnItemLongClickListener() {    
//          @Override
//          public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
//              registerForContextMenu(view);
//                      
//              return false;
//          }
//      });


}

public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
    super.onCreateContextMenu(menu, v, menuInfo);
    AdapterView.AdapterContextMenuInfo info = 
            (AdapterView.AdapterContextMenuInfo)menuInfo;
    menu.setHeaderTitle(item.get(info.position));
    getMenuInflater().inflate(R.menu.context, menu);

}