我想在alertbox中设置textview文本。我想制作倒计时框。我的代码如下: 我的自定义提示框。
public abstract class ChallengeDialog extends AlertDialog.Builder implements OnClickListener {
TextView msg;
/**
* @param context
* @param title resource id
* @param message resource id
*/
public ChallengeDialog(Context context, String title, String message) {
super(context);
setTitle(title);
// setMessage(message);
msg = new TextView(context);
msg.setText(message);
setView(msg);
setPositiveButton("accept", this); //In android this is OK button
setNegativeButton("reject", this);//In android this is cancel button
}
public void setDialogMsg(String m){
msg.setText(m);
setView(msg);
}
/**
* will be called when "cancel" pressed.
* closes the dialog.
* can be overridden.
* @param dialog
*/
//This is cancel button
public void onOkClicked(DialogInterface dialog) {
dialog.dismiss();
}
@Override
public void onClick(DialogInterface dialog, int which) {
if (which == DialogInterface.BUTTON_POSITIVE) {
dialog.dismiss();
} else {
onOkClicked(dialog);
}
}
/**
* called when "ok" pressed.
* @param input
* @return true, if the dialog should be closed. false, if not.
*/
//This is challenge button
abstract public boolean onCancelClicked(String input);
}
使用自定义提醒框的代码
ChallengeDialog chlngDialog = new ChallengeDialog(MyActivity.this,"title","count") {
@Override
public boolean onCancelClicked(String input) {
// TODO Auto-generated method stub
return false;
}
};
AlertDialog a = chlngDialog.show();
for(int i = 15 ; i>0 ;i--){
try {
chlngDialog.setDialogMsg("count "+i);
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
//a.dismiss();
我正在点击listview执行此代码。但是警告框在15秒后显示,我点击了listview项目。我不知道为什么会这样?
答案 0 :(得分:1)
我最终得到了Android Coader建议的异步任务。以下是代码:
public abstract class MyDialog extends AlertDialog.Builder implements OnClickListener {
TextView msgTxt;
private static int count= 15 ;
private String user;
private int c;
/**
* @param context
* @param title resource id
* @param message resource id
*/
public ChallengeDialog(Context context, String title, String message) {
super(context);
setTitle(title);
setCancelable(false);
// setMessage(message);
msgTxt = new TextView(context);
msgTxt.setText(message);
setView(msgTxt);
setPositiveButton("accept", this); //In android this is OK button
setNegativeButton("reject", this);//In android this is cancel button
MyTimerTask myTask = new MyTimerTask();
myTask.execute(new String[] { "abc" });
}
public void setUserAndBet(String u,int b){
c= b;
user = u ;
}
/**
* will be called when "cancel" pressed.
* closes the dialog.
* can be overridden.
* @param dialog
*/
@Override
public void onClick(DialogInterface dialog, int which) {
if (which == DialogInterface.BUTTON_POSITIVE) {
onAcceptClicked(dialog);
// dialog.dismiss();
} else {
onRejectClicked(dialog);
}
}
/**
* called when "ok" pressed.
* @param input
* @return true, if the dialog should be closed. false, if not.
*/
//This is accept button
abstract public boolean onAcceptClicked(DialogInterface d);
abstract public boolean onRejectClicked(DialogInterface d);
Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
int countDownValue = (Integer)msg.obj;
msgTxt.setText(countDownValue +" seconds");
//call setText here
}
};
class MyTimerTask extends AsyncTask<String, Void, String>{
@Override
protected String doInBackground(String... urls) {
//mHandler.sendEmptyMessage(0);
while(count > 0 ){
Message msg = new Message();
int countDownValue = count--;
msg.obj = countDownValue;
mHandler.sendMessage(msg);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return " ";
}
}
}
只需创建此调用的对象并调用show()方法。谢谢Adndroid Coader
答案 1 :(得分:0)
您是否将for循环放在onItemClick
侦听器中?
如果是,则创建一个异步任务并在onItemClick
侦听器中执行该任务。将for循环放在doInBackground
。