我想显示一个对话框/弹出窗口,向用户显示一条消息“您确定要删除此条目吗?”,其中一个按钮说“删除”。当点击Delete时,它应该删除该条目,否则什么都不删除。
我已经为这些按钮写了一个点击监听器,但我如何调用对话框或弹出窗口及其功能?
我想显示一个对话框/弹出窗口,向用户显示一条消息“您确定要删除此条目吗?”,其中一个按钮说“删除”。当点击Delete时,它应该删除该条目,否则什么都不删除。
我已经为这些按钮写了一个点击监听器,但我如何调用对话框或弹出窗口及其功能?
当前回答
我已经创建了一个对话框,用于询问Person是否想呼叫Person。
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.Toast;
public class Firstclass extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.first);
ImageView imageViewCall = (ImageView) findViewById(R.id.ring_mig);
imageViewCall.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v)
{
try
{
showDialog("0728570527");
}
catch (Exception e)
{
e.printStackTrace();
}
}
});
}
public void showDialog(final String phone) throws Exception
{
AlertDialog.Builder builder = new AlertDialog.Builder(Firstclass.this);
builder.setMessage("Ring: " + phone);
builder.setPositiveButton("Ring", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
Intent callIntent = new Intent(Intent.ACTION_DIAL);// (Intent.ACTION_CALL);
callIntent.setData(Uri.parse("tel:" + phone));
startActivity(callIntent);
dialog.dismiss();
}
});
builder.setNegativeButton("Avbryt", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
dialog.dismiss();
}
});
builder.show();
}
}
其他回答
从列表中删除条目的代码
/*--dialog for delete entry--*/
private void cancelBookingAlert() {
AlertDialog dialog;
final AlertDialog.Builder alertDialog = new AlertDialog.Builder(MainActivity.this, R.style.AlertDialogCustom);
alertDialog.setTitle("Delete Entry");
alertDialog.setMessage("Are you sure you want to delete this entry?");
alertDialog.setCancelable(false);
alertDialog.setPositiveButton("Delete", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
//code to delete entry
}
});
alertDialog.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
dialog = alertDialog.create();
dialog.show();
}
在删除按钮单击时调用上述方法
你可以试试这个....
AlertDialog.Builder dialog = new AlertDialog.Builder(MainActivity.this);
dialog.setCancelable(false);
dialog.setTitle("Dialog on Android");
dialog.setMessage("Are you sure you want to delete this entry?" );
dialog.setPositiveButton("Delete", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
//Action for "Delete".
}
})
.setNegativeButton("Cancel ", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//Action for "Cancel".
}
});
final AlertDialog alert = dialog.create();
alert.show();
欲了解更多信息,请查看此链接…
这是一个创建Alert对话框的基本示例:
AlertDialog.Builder dialog = new AlertDialog.Builder(MainActivity.this);
dialog.setCancelable(false);
dialog.setTitle("Dialog on Android");
dialog.setMessage("Are you sure you want to delete this entry?" );
dialog.setPositiveButton("Delete", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int id) {
//Action for "Delete".
}
})
.setNegativeButton("Cancel ", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
//Action for "Cancel".
}
});
final AlertDialog alert = dialog.create();
alert.show();
试试Kotlin
AlertDialog.Builder(this)
.setTitle("Title")
.setPositiveButton("Yes"){ dialog, which ->
}
.setNegativeButton("No", null)
.setMessage("Your given alert message...")
.show()
使用Anko (Kotlin开发人员的官方库),您可以简单地使用
alert("Alert title").show()
或者更复杂的:
alert("Hi, I'm Roy", "Have you tried turning it off and on again?") {
yesButton { toast("Oh…") }
noButton {}
}.show()
导入Anko:
implementation "org.jetbrains.anko:anko:0.10.8"