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嘿傢伙即時通訊問題,從列表視圖中刪除一個對象,每次按下「刪除」按鈕時。現在,我用一個簡單的吐司消息替換了那些意味着是刪除功能的代碼,只是爲了讓我知道該按鈕的工作原理,但是屏幕上沒有任何東西出現,所以我認爲它不起作用。當我點擊刪除按鈕時,沒有錯誤出現在日誌貓身上。從列表視圖刪除項目 - 解析(Android)
我跟着一個解析教程由android開始創建這個簡單的列表視圖,但想添加更多的功能。
所有的@Override
protected void onPostExecute(Void result) {
// Locate the listview in listview_main.xml
listView = (ListView) findViewById(R.id.listview);
// Pass the results into an ArrayAdapter
adapter = new ArrayAdapter<String>(SelectCourse.this,
R.layout.listview_item, R.id.text);
// Retrieve object "name" from Parse.com database
for (ParseObject course : ob) {
adapter.add((String) course.get("name"));
}
// Binds the Adapter to the ListView
listView.setAdapter(adapter);
// Close the progress dialog
mProgressDialog.dismiss();
// Capture button clicks on ListView items
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
final int position, long id) {
// Send single item click data to SingleItemView Class
Intent i = new Intent(SelectCourse.this,
SingleItemView.class);
// Pass data "name" followed by the position
i.putExtra("name", ob.get(position).getString("name")
.toString());
// Open SingleItemView.java Activity
startActivity(i);
//locate delete button
deleteBtn = (Button) findViewById(R.id.delete);
//create on click listener for the delete button
deleteBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
View parentRow = (View) v.getParent();
ListView listView1 = (ListView) parentRow.getParent();
final int position = listView1.getPositionForView(parentRow);
Toast.makeText(getApplicationContext(), "Successfully Deleted", Toast.LENGTH_LONG).show();
}
});
}
});
感謝您的答覆,我只是想上面的代碼,它仍然犯規似乎工作:(。你認爲這是值得我把xml佈局文件在我的問題,以及所以你可以看到如何一個ID的東西? – hero8110 2015-04-02 15:16:10
Overrode getView? – 2015-04-02 15:17:40
即時通訊不知道你的意思,對不起我的android編程知識是非常小的 – hero8110 2015-04-02 15:20:51