我得到了一项任务,我必须实现自定义呼叫转发系统,并且正在寻找这样做的方法。我决定Androids自己的呼叫转发看起来很棒,并决定我想提示用户点击列表视图上的项目。基本上我想在用户点击项目时弹出它。
这是我正在尝试实现对话框的代码:
public class CallForwardActivity extends ListActivity
{
String[] settingsLabels = {"Viderestillinger", "Altid", "Optaget", "Ingen svar", "Timeout"};
int position;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ListView lv = getListView();
lv.setTextFilterEnabled(true);
setListAdapter(new ArrayAdapter<String>(this, R.layout.callforward_items, R.id.callforward_item_text, settingsLabels));
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id)
{
// Open Dialog Box with an edittext view for setting the correct number to Call forward
myTextDialog().show() // ???
}
});
}
private Dialog myTextDialog() {
final View layout = View.inflate(this, R.layout.custom_dialog, null);
final EditText savedText = ((EditText) layout.findViewById(R.id.myEditText));
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setIcon(0);
builder.setPositiveButton("Save", new Dialog.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
String myTextString = savedText.getText().toString().trim();
}
});
builder.setView(layout);
return builder.create();
}
如何“调用”此方法/显示对话框?
答案 0 :(得分:1)
如果你想构建自己的对话框(例如在onItemClickListener中),那么AlertDialog.Builder是一个很好的起点。例如:
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id)
{
new AlertDialog.Builder(view.getContext())
.setMessage("Something here")
.setNegativeButton("Close", null).show();
}
});
您可以在此处查看AlertDialog的文档:http://developer.android.com/reference/android/app/AlertDialog.Builder.html
答案 1 :(得分:1)
以这种方式使用它来声明对话框
final AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setView(//your view)
.setPositiveButton("Update", new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, final int id) {
//update click
}
})
.setNeutralButton("Disable", new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, final int id) {
//disable click
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(final DialogInterface dialog, final int id) {
//cancel click
}
});
并在您的点击监听器中显示如下,
builder.show();
在函数builder.setView()
中,如果要使其与图形相同,则必须为其传递一个视图(例如布局),其中包含textview和edittext以及按钮。