Android学习07

自定义Dialog

创建一个Java类CustomDialog继承Dialog。

package com.example.helloworld.widget;

import android.app.Dialog;

import android.content.Context;

import android.graphics.Point;

import android.os.Bundle;

import android.text.TextUtils;

import android.view.Display;

import android.view.View;

import android.view.WindowManager;

import android.widget.TextView;

import androidx.annotation.NonNull;

import com.example.helloworld.R;

public class CustomDialog extends Dialog implements View.OnClickListener {

    private TextView mTvTitle,mTvMessage,mTvCancel,mTvConfirm;

    private String title,message,cancel,confirm;

    private IOnCancelListener cancelListener;  //取消按钮被点击了的监听器

    private IOnConfirmlListener confirmlListener;  //确定按钮被点击了的监听器

    public CustomDialog(@NonNull Context context) {

        super(context);

    }

    public CustomDialog(@NonNull Context context,int themeId) {

        super(context,themeId);

    }

    public CustomDialog setTitle(String title) {

        this.title = title;

        return this;

    }

    public CustomDialog setMessage(String message) {

        this.message = message;

        return this;

    }

    public CustomDialog setCancel(String cancel,IOnCancelListener listener) {

        this.cancel = cancel;

        this.cancelListener = listener;

        return this;

    }

    public CustomDialog setConfirm(String confirm,IOnConfirmlListener listener) {

        this.confirm = confirm;

        this.confirmlListener = listener;

        return this;

    }

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.layout_custom_dialog);

        //空白处不能取消动画

        setCanceledOnTouchOutside(false);

        //设置宽度

        WindowManager m = getWindow().getWindowManager();

        Display d = m.getDefaultDisplay();

        WindowManager.LayoutParams p =getWindow().getAttributes();

        Point size = new Point();

        d.getSize(size);

        p.width = (int)(size.x * 0.8);  //设置dialog的宽度为当前手机屏幕的宽度*0.8

        getWindow().setAttributes(p);

        mTvTitle = findViewById(R.id.tv_title);

        mTvMessage = findViewById(R.id.tv_message);

        mTvCancel = findViewById(R.id.tv_cancel);

        mTvConfirm = findViewById(R.id.tv_confirm);

        if (!TextUtils.isEmpty(title)){

            mTvTitle.setText(title);

        }

        if (!TextUtils.isEmpty(message)){

            mTvMessage.setText(message);

        }

        if (!TextUtils.isEmpty(cancel)){

            mTvCancel.setText(cancel);

        }

        if (!TextUtils.isEmpty(confirm)){

            mTvConfirm.setText(confirm);

        }

        //设置取消和确定的监听事件

        mTvCancel.setOnClickListener(this);

        mTvConfirm.setOnClickListener(this);

    }

    @Override

    public void onClick(View v) {

        switch (v.getId()){

            case R.id.tv_cancel:

                if (cancelListener!=null){

                    cancelListener.onCancel(this);

                }

                break;

            case R.id.tv_confirm:

                if (confirmlListener!=null){

                    confirmlListener.onConfirm(this);

                }

                break;

        }

    }

//回调接口

    public interface IOnCancelListener{

        void onCancel(CustomDialog dialog);

    }

    public interface IOnConfirmlListener{

        void onConfirm(CustomDialog dialog);

    }

}

activity_custom.xml:

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    android:padding="15dp">

    <Button

        android:id="@+id/btn_custom_dialog"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="自定义Dialog"

        android:textAllCaps="false"/>

</LinearLayout>

在drawable中新建bg_custom_dialog.xml设置边框：

<?xml version="1.0" encoding="utf-8"?>

<shape xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent">

    <solid android:color="#ffffff" />

    <stroke

        android:width="0.8dp"

        android:color="#ffffff" />

    <!-- 圆角 -->

    <corners android:radius="6dp" />

</shape>

新建layout文件，layout_custom_dialog.xml:

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="vertical"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:gravity="center_horizontal"

    android:background="@drawable/bg_custom_dialog">

    <TextView

        android:id="@+id/tv_title"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:textSize="30sp"

        android:textColor="#000"

        android:text="提示"

        android:textStyle="bold"

        android:layout_marginTop="15dp"/>

    <TextView

        android:id="@+id/tv_message"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:textSize="30sp"

        android:textColor="#000"

        android:text="删除？"

        android:layout_marginTop="20dp"

        android:layout_marginBottom="20dp"/>

    <View

        android:layout_width="match_parent"

        android:layout_height="1dp"

        android:background="#3CA9C4"/>

    <LinearLayout

        android:layout_width="match_parent"

        android:layout_height="45dp"

        android:orientation="horizontal">

        <TextView

            android:id="@+id/tv_cancel"

            android:layout_width="0dp"

            android:layout_height="match_parent"

            android:layout_weight="1"

            android:text="取消"

            android:textSize="20sp"

            android:textColor="#3CA9C4"

            android:gravity="center"/>

        <View

            android:layout_width="1dp"

            android:layout_height="match_parent"

            android:background="#3CA9C4"/>

        <TextView

            android:id="@+id/tv_confirm"

            android:layout_width="0dp"

            android:layout_height="match_parent"

            android:layout_weight="1"

            android:text="确定"

            android:textSize="20sp"

            android:textColor="#3CA9C4"

            android:gravity="center"/>

    </LinearLayout>

</LinearLayout>

CustomActivity:

package com.example.helloworld;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

import com.example.helloworld.widget.CustomDialog;

public class CustomDialogActivity extends AppCompatActivity {

    private Button mBtnDialog;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_custom);

        mBtnDialog = findViewById(R.id.btn_custom_dialog);

        mBtnDialog.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                final CustomDialog customDialog = new CustomDialog(CustomDialogActivity.this);

                customDialog.setTitle("提示").setMessage("确认删除？")

                        .setCancel("取消", new CustomDialog.IOnCancelListener() {

                    @Override

                    public void onCancel(CustomDialog dialog) {

                        Toast.makeText(CustomDialogActivity.this, "取消", Toast.LENGTH_SHORT).show();

                        customDialog.dismiss();

                    }

                })

                        .setConfirm("确认", new CustomDialog.IOnConfirmlListener() {

                    @Override

                    public void onConfirm(CustomDialog dialog) {

                        Toast.makeText(CustomDialogActivity.this, "确定", Toast.LENGTH_SHORT).show();

                        customDialog.dismiss();

                    }

                }).show();

            }

        });

    }

}

运行截图：

巴特西

Android学习07

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