为什么自定义对话框按钮不起作用？

Question

我的应用中有一个自定义对话框，但是当我单击对话框按钮时它们不起作用！

我想在导航抽屉的一项中显示对话框 这就是代码：

dialog = new Dialog(MaterialCardsActivity.this);
        dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
        dialog.setCancelable(true);
        dialog.setContentView(R.layout.dialog_mail);
        dialog.show();

我该如何解决？

Custom_Dialog.java

package com.example.material.amirj;

import android.app.Dialog;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.Window;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;


public class Dialog_Custom extends AppCompatActivity {

private EditText caption;
private Dialog dialog;
private EditText text;
private Button send,cancel;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.dialog_mail);


    dialog = new Dialog(Dialog_Custom.this);
    dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
    dialog.setCancelable(true);
    dialog.setContentView(R.layout.dialog_mail);

    caption = (EditText) dialog.findViewById(R.id.txt_caption_dialoge);
    text = (EditText) dialog.findViewById(R.id.txt_text_dialoge);
    send = (Button) dialog.findViewById(R.id.btn_send_email);
    cancel = (Button) dialog.findViewById(R.id.btn_cancel_dialog);

    send.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            Intent i = new Intent(Intent.ACTION_SEND);
            i.setType("message/rfc822");
            i.putExtra(Intent.EXTRA_EMAIL, new String[]{"titandevelopers98@gmail.com"});
            i.putExtra(Intent.EXTRA_SUBJECT, "" + caption.getText());
            i.putExtra(Intent.EXTRA_TEXT, "" + text.getText());
            try {
                startActivity(Intent.createChooser(i, "ارسال ایمیل با ..."));
            } catch (android.content.ActivityNotFoundException ex) {
                Toast.makeText(Dialog_Custom.this, "برنامه ای از ازسال ایمیل پشتیبانی نمیکند.", Toast.LENGTH_SHORT).show();
            }
        }

    });
    cancel.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            dialog.dismiss();

        }
    });
  dialog.show();
}
}

dialog_mail.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="16dp"
android:weightSum="1">

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:text="ارتباط با ما - ایمیل"
    android:id="@+id/textView2"
    android:layout_gravity="right"
    android:textColor="@color/colorPrimary"
    android:padding="8dp"
    android:layout_alignParentTop="true"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:gravity="center" />

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="ارسال"
    android:id="@+id/btn_send_email"
    android:textColor="#ffffff"
    android:layout_below="@+id/textView2"
    android:layout_alignRight="@+id/editText"
    android:layout_alignEnd="@+id/editText"
    android:layout_marginTop="151dp"
    android:theme="@style/MyButton"
    android:allowUndo="true" />

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="لغو"
    android:id="@+id/btn_cancel_dialog"
    android:textColor="@android:color/holo_red_light"
    style="?android:attr/borderlessButtonStyle"
    android:layout_alignTop="@+id/btn_send_email"
    android:layout_toLeftOf="@+id/btn_send_email"
    android:layout_toStartOf="@+id/btn_send_email" />
<android.support.design.widget.TextInputLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:hintTextAppearance="@style/MyHintText"
    android:id="@+id/view3"
    android:layout_below="@+id/textView2"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:focusable="true">

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="عنوان"
        android:id="@+id/txt_text_dialoge"
        android:theme="@style/MyEditText" />

</android.support.design.widget.TextInputLayout>

<android.support.design.widget.TextInputLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    app:hintTextAppearance="@style/MyHintText"
    android:layout_below="@+id/view3"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:id="@+id/editText"
    android:layout_above="@+id/btn_cancel_dialog">

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="متن پیام"
        android:id="@+id/txt_caption_dialoge"
        android:theme="@style/MyEditText" />

</android.support.design.widget.TextInputLayout>
</RelativeLayout>

final result but buttons don't work

Answer 1

试试这个，

dialog_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<Button
    android:id="@+id/buttonClick"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Click To Show Custom Dialog" />

</LinearLayout>

dialog.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >

<ImageView
    android:id="@+id/imageDialog"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginRight="6dp" />

<TextView
    android:id="@+id/textDialog"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:textColor="#FFF"
    android:layout_toRightOf="@+id/imageDialog"/>

 <Button
    android:id="@+id/okButton"
    android:layout_width="100px"
    android:layout_height="wrap_content"
    android:text="Ok"
    android:layout_marginTop="5dp"
    android:layout_marginRight="5dp"
    android:layout_below="@+id/textDialog"
    android:layout_toRightOf="@+id/imageDialog"
    />

</RelativeLayout>

CustomDialog.java

公共类 CustomDialog 扩展 Activity {

private Button btnClick;

public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.custom_dialog_main);

    btnClick = (Button) findViewById(R.id.btnClick);

    // add listener to button 
    buttonClick.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View arg0) {

            // Create custom dialog object
            final Dialog dialog = new Dialog(CustomDialog.this);
            // Include dialog.xml file
            dialog.setContentView(R.layout.dialog);
            // Set dialog title
            dialog.setTitle("Custom Dialog");

            // set values for custom dialog components - text, image and button
            TextView text = (TextView) dialog.findViewById(R.id.textDialog);
            text.setText("Custom dialog");
            ImageView image = (ImageView) dialog.findViewById(R.id.imageDialog);
            image.setImageResource(R.drawable.image0);

            dialog.show();

            Button okButton = (Button) dialog.findViewById(R.id.declineButton);
            // if decline button is clicked, close the custom dialog
            okButton.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View v) {
                    // Close dialog
                    dialog.dismiss();
                }
            });


        }

    });

  }

}

编码愉快..！