如何在Android上显示警报对话框？

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发布时间：2019-05-20

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我想显示一个对话框/弹出窗口，并向用户显示“您确定要删除此条目吗？”的消息。一个带有“删除”按钮。触摸Delete ，它应删除该条目，否则不删除任何条目。

我已经为这些按钮编写了一个单击侦听器，但是如何调用对话框或弹出窗口及其功能？

#1楼

试试这个代码：

AlertDialog.Builder builder1 = new AlertDialog.Builder(context);builder1.setMessage("Write your message here.");builder1.setCancelable(true);builder1.setPositiveButton(    "Yes",    new DialogInterface.OnClickListener() {        public void onClick(DialogInterface dialog, int id) {            dialog.cancel();        }    });builder1.setNegativeButton(    "No",    new DialogInterface.OnClickListener() {        public void onClick(DialogInterface dialog, int id) {            dialog.cancel();        }    });AlertDialog alert11 = builder1.create();alert11.show();

#2楼

您可以使用以下代码：

AlertDialog.Builder alertDialog2 = new AlertDialog.Builder(    AlertDialogActivity.this);// Setting Dialog TitlealertDialog2.setTitle("Confirm Delete...");// Setting Dialog MessagealertDialog2.setMessage("Are you sure you want delete this file?");// Setting Icon to DialogalertDialog2.setIcon(R.drawable.delete);// Setting Positive "Yes" BtnalertDialog2.setPositiveButton("YES",    new DialogInterface.OnClickListener() {        public void onClick(DialogInterface dialog, int which) {            // Write your code here to execute after dialog            Toast.makeText(getApplicationContext(),                           "You clicked on YES", Toast.LENGTH_SHORT)                    .show();        }    });// Setting Negative "NO" BtnalertDialog2.setNegativeButton("NO",    new DialogInterface.OnClickListener() {        public void onClick(DialogInterface dialog, int which) {            // Write your code here to execute after dialog            Toast.makeText(getApplicationContext(),                           "You clicked on NO", Toast.LENGTH_SHORT)                    .show();            dialog.cancel();        }    });// Showing Alert DialogalertDialog2.show();

#3楼

这绝对对您有帮助。尝试以下代码：单击按钮时，可以将一个，两个或三个按钮与警报对话框一起放置...

SingleButtton.setOnClickListener(new View.OnClickListener() {    public void onClick(View arg0) {        // Creating alert Dialog with one Button        AlertDialog alertDialog = new AlertDialog.Builder(AlertDialogActivity.this).create();        // Setting Dialog Title        alertDialog.setTitle("Alert Dialog");        // Setting Dialog Message        alertDialog.setMessage("Welcome to Android Application");        // Setting Icon to Dialog        alertDialog.setIcon(R.drawable.tick);        // Setting OK Button        alertDialog.setButton("OK", new DialogInterface.OnClickListener() {            public void onClick(DialogInterface dialog,int which)            {                // Write your code here to execute after dialog    closed                Toast.makeText(getApplicationContext(),"You clicked on OK", Toast.LENGTH_SHORT).show();            }        });        // Showing Alert Message        alertDialog.show();    }});btnAlertTwoBtns.setOnClickListener(new View.OnClickListener() {    public void onClick(View arg0) {        // Creating alert Dialog with two Buttons        AlertDialog.Builder alertDialog = new AlertDialog.Builder(AlertDialogActivity.this);        // Setting Dialog Title        alertDialog.setTitle("Confirm Delete...");        // Setting Dialog Message        alertDialog.setMessage("Are you sure you want delete this?");        // Setting Icon to Dialog        alertDialog.setIcon(R.drawable.delete);        // Setting Positive "Yes" Button        alertDialog.setPositiveButton("YES",                new DialogInterface.OnClickListener() {                    public void onClick(DialogInterface dialog,int which) {                        // Write your code here to execute after dialog                        Toast.makeText(getApplicationContext(), "You clicked on YES", Toast.LENGTH_SHORT).show();                    }                });        // Setting Negative "NO" Button        alertDialog.setNegativeButton("NO",                new DialogInterface.OnClickListener() {                    public void onClick(DialogInterface dialog,    int which) {                        // Write your code here to execute after dialog                        Toast.makeText(getApplicationContext(), "You clicked on NO", Toast.LENGTH_SHORT).show();                        dialog.cancel();                    }                });        // Showing Alert Message        alertDialog.show();    }});btnAlertThreeBtns.setOnClickListener(new View.OnClickListener() {    public void onClick(View arg0) {        // Creating alert Dialog with three Buttons        AlertDialog.Builder alertDialog = new AlertDialog.Builder(                AlertDialogActivity.this);        // Setting Dialog Title        alertDialog.setTitle("Save File...");        // Setting Dialog Message        alertDialog.setMessage("Do you want to save this file?");        // Setting Icon to Dialog        alertDialog.setIcon(R.drawable.save);        // Setting Positive Yes Button        alertDialog.setPositiveButton("YES",            new DialogInterface.OnClickListener() {                public void onClick(DialogInterface dialog,                        int which) {                    // User pressed Cancel button. Write Logic Here                    Toast.makeText(getApplicationContext(),                            "You clicked on YES",                            Toast.LENGTH_SHORT).show();                }            });        // Setting Negative No Button... Neutral means in between yes and cancel button        alertDialog.setNeutralButton("NO",            new DialogInterface.OnClickListener() {                public void onClick(DialogInterface dialog,                        int which) {                    // User pressed No button. Write Logic Here                    Toast.makeText(getApplicationContext(),                            "You clicked on NO", Toast.LENGTH_SHORT)                            .show();                }            });        // Setting Positive "Cancel" Button        alertDialog.setNegativeButton("Cancel",            new DialogInterface.OnClickListener() {                public void onClick(DialogInterface dialog,                        int which) {                    // User pressed Cancel button. Write Logic Here                    Toast.makeText(getApplicationContext(),                            "You clicked on Cancel",                            Toast.LENGTH_SHORT).show();                }            });        // Showing Alert Message        alertDialog.show();    }});

#4楼

您可以为此使用AlertDialog并使用其Builder类构造一个AlertDialog 。下面的示例使用默认构造函数，该构造函数仅接受Context因为对话框将从您传入的Context中继承适当的主题，但是如果需要，还有一个构造函数可让您将特定的主题资源指定为第二个参数。这样做。

new AlertDialog.Builder(context)    .setTitle("Delete entry")    .setMessage("Are you sure you want to delete this entry?")    // Specifying a listener allows you to take an action before dismissing the dialog.    // The dialog is automatically dismissed when a dialog button is clicked.    .setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {        public void onClick(DialogInterface dialog, int which) {             // Continue with delete operation        }     })    // A null listener allows the button to dismiss the dialog and take no further action.    .setNegativeButton(android.R.string.no, null)    .setIcon(android.R.drawable.ic_dialog_alert)    .show();

#5楼

我创建了一个对话框，询问一个人是否要呼叫一个人。

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();    }}

#6楼

如今，最好使用DialogFragment而不是直接创建AlertDialog。

怎么样？参见： :

为什么？参见： :

#7楼

David Hedlund发布的代码给了我错误：

无法添加窗口-令牌null无效

如果遇到相同的错误，请使用以下代码。有用！！

runOnUiThread(new Runnable() {    @Override    public void run() {        if (!isFinishing()){            new AlertDialog.Builder(YourActivity.this)              .setTitle("Your Alert")              .setMessage("Your Message")              .setCancelable(false)              .setPositiveButton("ok", new OnClickListener() {                  @Override                  public void onClick(DialogInterface dialog, int which) {                      // Whatever...                  }              }).show();        }    }});

#8楼

// Dialog boxpublic void dialogBox() {    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);    alertDialogBuilder.setMessage("Click on Image for tag");    alertDialogBuilder.setPositiveButton("Ok",        new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface arg0, int arg1) {        }    });    alertDialogBuilder.setNegativeButton("cancel",        new DialogInterface.OnClickListener() {        @Override        public void onClick(DialogInterface arg0, int arg1) {        }    });    AlertDialog alertDialog = alertDialogBuilder.create();    alertDialog.show();}

#9楼

只是一个简单的！创建一个对话框方法，在您的Java类中的任何地方都类似这样：

public void openDialog() {    final Dialog dialog = new Dialog(context); // Context, this, etc.    dialog.setContentView(R.layout.dialog_demo);    dialog.setTitle(R.string.dialog_title);    dialog.show();}

现在创建布局XML dialog_demo.xml并创建您的UI /设计。这是我为演示目的创建的一个示例：

现在您可以从任何喜欢的地方调用openDialog() ：）这是上面代码的屏幕截图。

在此处输入图片说明

请注意，从strings.xml和colors.xml使用文本和颜色。您可以定义自己的。

#10楼

要关闭对话框时请小心，请使用dialog.dismiss() 。在我的第一次尝试中，我使用了dismissDialog(0) （我可能是从某个地方复制的），有时可以工作。使用该对象，系统提供的声音听起来是一个更安全的选择。

#11楼

您也可以尝试这种方式，它将为您提供材料样式对话框

private void showDialog(){    String text2 = "Medi Notification";//for custom title color    AlertDialog.Builder builder = new AlertDialog.Builder(this, R.style.AppCompatAlertDialogStyle);    builder.setTitle(Html.fromHtml(text2));    String text3 = "You can complete your profile now or start using the app and come back later";//for custom message    builder.setMessage(Html.fromHtml(text3));    builder.setPositiveButton("DELETE", new DialogInterface.OnClickListener()    {        @Override        public void onClick(DialogInterface dialog, int which)        {            toast = Toast.makeText(getApplicationContext(), "DELETE", Toast.LENGTH_SHORT);            toast.setGravity(Gravity.CENTER, 0, 0);            toast.show();                      }    });    builder.setNegativeButton("CANCEL", new DialogInterface.OnClickListener()    {        @Override        public void onClick(DialogInterface dialog, int which)        {            toast = Toast.makeText(getApplicationContext(), "CANCEL", Toast.LENGTH_SHORT);            toast.setGravity(Gravity.CENTER, 0, 0);            toast.show();        }    });    builder.show();}

#12楼

import android.app.*;import android.os.Bundle;import android.view.Gravity;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup.LayoutParams;import android.widget.*;public class ShowPopUp extends Activity {PopupWindow popUp;LinearLayout layout;TextView tv;LayoutParams params;LinearLayout mainLayout;Button but;boolean click = true;public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    popUp = new PopupWindow(this);    layout = new LinearLayout(this);    mainLayout = new LinearLayout(this);    tv = new TextView(this);    but = new Button(this);    but.setText("Click Me");    but.setOnClickListener(new OnClickListener() {        public void onClick(View v) {            if (click) {                popUp.showAtLocation(mainLayout, Gravity.BOTTOM, 10, 10);                popUp.update(50, 50, 300, 80);                click = false;            } else {                popUp.dismiss();                click = true;            }        }    });    params = new LayoutParams(LayoutParams.WRAP_CONTENT,            LayoutParams.WRAP_CONTENT);    layout.setOrientation(LinearLayout.VERTICAL);    tv.setText("Hi this is a sample text for popup window");    layout.addView(tv, params);    popUp.setContentView(layout);    // popUp.showAtLocation(layout, Gravity.BOTTOM, 10, 10);    mainLayout.addView(but, params);    setContentView(mainLayout);       }   }

#13楼

public void showSimpleDialog(View view) {    // Use the Builder class for convenient dialog construction    AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);    builder.setCancelable(false);    builder.setTitle("AlertDialog Title");    builder.setMessage("Simple Dialog Message");    builder.setPositiveButton("OK!!!", new DialogInterface.OnClickListener() {        @Override        public void onClick(DialogInterface dialog, int id) {            //        }    })    .setNegativeButton("Cancel ", new DialogInterface.OnClickListener() {        @Override        public void onClick(DialogInterface dialog, int which) {        }    });    // Create the AlertDialog object and return it    builder.create().show();}

还要查看我在Android上的Dialogs上的博客，您会在这里找到所有详细信息： : 。

#14楼

这是如何创建的基本示例：

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();

#15楼

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();

#16楼

为了我

new AlertDialog.Builder(this)    .setTitle("Closing application")    .setMessage("Are you sure you want to exit?")    .setPositiveButton("Yes", new DialogInterface.OnClickListener() {          @Override          public void onClick(DialogInterface dialog, int which) {          }     }).setNegativeButton("No", null).show();

#17楼

试试这个代码

AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(MainActivity.this);    // set title    alertDialogBuilder.setTitle("AlertDialog Title");    // set dialog message    alertDialogBuilder            .setMessage("Some Alert Dialog message.")            .setCancelable(false)            .setPositiveButton("OK", new DialogInterface.OnClickListener() {                public void onClick(DialogInterface dialog, int id) {                            Toast.makeText(this, "OK button click ", Toast.LENGTH_SHORT).show();                }            })            .setNegativeButton("CANCEL",new DialogInterface.OnClickListener() {                public void onClick(DialogInterface dialog, int id) {                           Toast.makeText(this, "CANCEL button click ", Toast.LENGTH_SHORT).show();                    dialog.cancel();                }            });    // create alert dialog    AlertDialog alertDialog = alertDialogBuilder.create();    // show it    alertDialog.show();

#18楼

new AlertDialog.Builder(v.getContext()).setMessage("msg to display!").show();

#19楼

您可以使用AlertDialog.Builder创建对话框

尝试这个：

AlertDialog.Builder builder = new AlertDialog.Builder(this);        builder.setMessage("Are you sure you want to delete this entry?");        builder.setPositiveButton("Yes, please", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                //perform any action                Toast.makeText(getApplicationContext(), "Yes clicked", Toast.LENGTH_SHORT).show();            }        });        builder.setNegativeButton("No", new DialogInterface.OnClickListener() {            @Override            public void onClick(DialogInterface dialog, int which) {                //perform any action                Toast.makeText(getApplicationContext(), "No clicked", Toast.LENGTH_SHORT).show();            }        });        //creating alert dialog        AlertDialog alertDialog = builder.create();        alertDialog.show();

要更改“警报”对话框的正面和负面按钮的颜色，可以在alertDialog.show();之后编写以下两行alertDialog.show();

alertDialog.getButton(AlertDialog.BUTTON_POSITIVE).setTextColor(getResources().getColor(R.color.colorPrimary));alertDialog.getButton(AlertDialog.BUTTON_NEGATIVE).setTextColor(getResources().getColor(R.color.colorPrimaryDark));

#20楼

new AlertDialog.Builder(context)    .setTitle("title")    .setMessage("message")    .setPositiveButton(android.R.string.ok, null)    .show();

#21楼

使用AlertDialog.Builder ：

AlertDialog alertDialog = new AlertDialog.Builder(this)//set icon  .setIcon(android.R.drawable.ic_dialog_alert)//set title.setTitle("Are you sure to Exit")//set message.setMessage("Exiting will call finish() method")//set positive button.setPositiveButton("Yes", new DialogInterface.OnClickListener() {    @Override    public void onClick(DialogInterface dialogInterface, int i) {   //set what would happen when positive button is clicked            finish();    }})//set negative button.setNegativeButton("No", new DialogInterface.OnClickListener() {    @Override    public void onClick(DialogInterface dialogInterface, int i) {   //set what should happen when negative button is clicked        Toast.makeText(getApplicationContext(),"Nothing Happened",Toast.LENGTH_LONG).show();    }}).show();

您将获得以下输出。

要查看警报对话框教程，请使用下面的链接。

#22楼

您可以创建Activity并扩展AppCompatActivity。然后在清单中放入下一个样式：

通过Buttons和TextViews对其进行充气

然后像对话框一样使用它。

例如，在linearLayout中，我填充下一个参数：

android:layout_width="300dp"android:layout_height="wrap_content"

#23楼

showDialog(MainActivity.this, "title", "message", "OK", "Cancel", {...}, {...});

科特林

fun showDialog(context: Context, title: String, msg: String,               positiveBtnText: String, negativeBtnText: String?,               positiveBtnClickListener: DialogInterface.OnClickListener,               negativeBtnClickListener: DialogInterface.OnClickListener?): AlertDialog {    val builder = AlertDialog.Builder(context)            .setTitle(title)            .setMessage(msg)            .setCancelable(true)            .setPositiveButton(positiveBtnText, positiveBtnClickListener)    if (negativeBtnText != null)        builder.setNegativeButton(negativeBtnText, negativeBtnClickListener)    val alert = builder.create()    alert.show()    return alert}

爪哇

public static AlertDialog showDialog(@NonNull Context context, @NonNull String title, @NonNull String msg,                                     @NonNull String positiveBtnText, @Nullable String negativeBtnText,                                     @NonNull DialogInterface.OnClickListener positiveBtnClickListener,                                     @Nullable DialogInterface.OnClickListener negativeBtnClickListener) {    AlertDialog.Builder builder = new AlertDialog.Builder(context)            .setTitle(title)            .setMessage(msg)            .setCancelable(true)            .setPositiveButton(positiveBtnText, positiveBtnClickListener);    if (negativeBtnText != null)        builder.setNegativeButton(negativeBtnText, negativeBtnClickListener);    AlertDialog alert = builder.create();    alert.show();    return alert;}

#24楼

我想通过分享一种比他发布的动态方法更多的动态方法来为David Hedlund添加一个很好的答案，这样可以在您确实要执行负面操作或不执行时使用它，希望对您有所帮助。

private void showAlertDialog(@NonNull Context context, @NonNull String alertDialogTitle, @NonNull String alertDialogMessage, @NonNull String positiveButtonText, @Nullable String negativeButtonText, @NonNull final int positiveAction, @Nullable final Integer negativeAction, @NonNull boolean hasNegativeAction){    AlertDialog.Builder builder;    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {        builder = new AlertDialog.Builder(context, android.R.style.Theme_Material_Dialog_Alert);    } else {        builder = new AlertDialog.Builder(context);    }    builder.setTitle(alertDialogTitle)            .setMessage(alertDialogMessage)            .setPositiveButton(positiveButtonText, new DialogInterface.OnClickListener() {                public void onClick(DialogInterface dialog, int which) {                    switch (positiveAction)                    {                        case 1:                            //TODO:Do your positive action here                             break;                    }                }            });            if(hasNegativeAction || negativeAction!=null || negativeButtonText!=null)            {            builder.setNegativeButton(negativeButtonText, new DialogInterface.OnClickListener() {                public void onClick(DialogInterface dialog, int which) {                    switch (negativeAction)                    {                        case 1:                            //TODO:Do your negative action here                            break;                        //TODO: add cases when needed                    }                }            });            }            builder.setIcon(android.R.drawable.ic_dialog_alert);            builder.show();}

#25楼

AlertDialog.Builder builder = new AlertDialog.Builder(this);    builder.setTitle("This is Title");    builder.setMessage("This is message for Alert Dialog");    builder.setPositiveButton("Positive Button", (dialog, which) -> onBackPressed());    builder.setNegativeButton("Negative Button", (dialog, which) -> dialog.cancel());    builder.show();

这种方法类似于用一些代码行创建“警报”对话框。

#26楼

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

#27楼

这是在科特林完成的

var builder : AlertDialog.Builder = if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)            {                AlertDialog.Builder(this,android.R.style.Theme_Material_Dialog_Alert)            }            else{                AlertDialog.Builder(this)            }            builder.setTitle("Delete Entry")                    .setMessage("Are you want to delete this entry")                    .setPositiveButton("Yes") {                    }                    .setNegativeButton("No"){                    }                    .setIcon(R.drawable.ic_launcher_foreground)                    .show()

#28楼

带有编辑文本的警报对话框

AlertDialog.Builder builder = new AlertDialog.Builder(context);//Context is activity contextfinal EditText input = new EditText(context);builder.setTitle(getString(R.string.remove_item_dialog_title));        builder.setMessage(getString(R.string.dialog_message_remove_item)); builder.setTitle(getString(R.string.update_qty));            builder.setMessage("");            LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(                    LinearLayout.LayoutParams.MATCH_PARENT,                    LinearLayout.LayoutParams.MATCH_PARENT);            input.setLayoutParams(lp);            input.setHint(getString(R.string.enter_qty));            input.setTextColor(ContextCompat.getColor(context, R.color.textColor));            input.setInputType(InputType.TYPE_CLASS_NUMBER);            input.setText("String in edit text you want");            builder.setView(input);   builder.setPositiveButton(getString(android.R.string.ok),                (dialog, which) -> {//Positive button click event  }); builder.setNegativeButton(getString(android.R.string.cancel),                (dialog, which) -> {//Negative button click event                });        AlertDialog dialog = builder.create();        dialog.show();

#29楼

制作此静态方法，并在任何需要的地方使用它。

public static void showAlertDialog(Context context, String title, String message, String posBtnMsg, String negBtnMsg) {            AlertDialog.Builder builder = new AlertDialog.Builder(context);            builder.setTitle(title);            builder.setMessage(message);            builder.setPositiveButton(posBtnMsg, new DialogInterface.OnClickListener() {                @Override                public void onClick(DialogInterface dialog, int which) {                    dialog.cancel();                }            });            builder.setNegativeButton(negBtnMsg, new DialogInterface.OnClickListener() {                @Override                public void onClick(DialogInterface dialog, int which) {                    dialog.cancel();                }            });            AlertDialog dialog = builder.create();            dialog.show();        }

#30楼

我在按钮onclick方法中使用了此alart对话框。

button.setOnClickListener(v -> {        AlertDialog.Builder builder = new AlertDialog.Builder(this);        LayoutInflater layoutInflaterAndroid = LayoutInflater.from(this);        View view2 = layoutInflaterAndroid.inflate(R.layout.cancel_dialog, null);        builder.setView(view2);        builder.setCancelable(false);        final AlertDialog alertDialog = builder.create();        alertDialog.show();        view2.findViewById(R.id.yesButton).setOnClickListener(v1 -> onBackPressed());        view2.findViewById(R.id.nobutton).setOnClickListener(v12 -> alertDialog.dismiss());    });

dialog.xml

#31楼

使用（Kotlin开发人员的官方库），您可以轻松使用

alert("Alert title").show()

或更复杂的一个：

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"

转载地址：http://waogj.baihongyu.com/

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