Android之Dialog详解(二):自定义对话框
16lz
2021-01-26
上一篇讲解了Android的四大对话框形式,今天我们来讲解第五种形式,自定义,也是最牛逼的。有没有很激动?
实现自定义对话框的步骤
1、先自定义一个对话框样式
<?xml version="1.0" encoding="utf-8"?>
2、创建一个ConfirmDialog类,继承Dialog类,实现里面方法,在里面创建自定义样式的弹出框。
package com.corn.widget;import android.app.Dialog;import android.content.Context;import android.os.Bundle;import android.util.DisplayMetrics;import android.view.LayoutInflater;import android.view.View;import android.view.Window;import android.view.WindowManager;import android.widget.TextView;import com.corn.R;public class ConfirmDialog extends Dialog { private Context context; private String title; private String confirmButtonText; private String cacelButtonText; private ClickListenerInterface clickListenerInterface; public interface ClickListenerInterface { public void doConfirm(); public void doCancel(); } public ConfirmDialog(Context context, String title, String confirmButtonText, String cacelButtonText) { super(context, R.style.MyDialog); this.context = context; this.title = title; this.confirmButtonText = confirmButtonText; this.cacelButtonText = cacelButtonText; } @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); init(); } public void init() { LayoutInflater inflater = LayoutInflater.from(context); View view = inflater.inflate(R.layout.confirm_dialog, null); setContentView(view); TextView tvTitle = (TextView) view.findViewById(R.id.title); TextView tvConfirm = (TextView) view.findViewById(R.id.confirm); TextView tvCancel = (TextView) view.findViewById(R.id.cancel); tvTitle.setText(title); tvConfirm.setText(confirmButtonText); tvCancel.setText(cacelButtonText); tvConfirm.setOnClickListener(new clickListener()); tvCancel.setOnClickListener(new clickListener()); Window dialogWindow = getWindow(); WindowManager.LayoutParams lp = dialogWindow.getAttributes(); DisplayMetrics d = context.getResources().getDisplayMetrics(); // 获取屏幕宽、高用 lp.width = (int) (d.widthPixels * 0.8); // 高度设置为屏幕的0.6 dialogWindow.setAttributes(lp); } public void setClicklistener(ClickListenerInterface clickListenerInterface) { this.clickListenerInterface = clickListenerInterface; } private class clickListener implements View.OnClickListener { @Override public void onClick(View v) { // TODO Auto-generated method stub int id = v.getId(); switch (id) { case R.id.confirm: clickListenerInterface.doConfirm(); break; case R.id.cancel: clickListenerInterface.doCancel(); break; } } };}
3、在需要使用此控件的地方,进行如下形式调用:
public static void Exit(final Context context) { final ConfirmDialog confirmDialog = new ConfirmDialog(context, "确定要退出吗?", "退出", "取消"); confirmDialog.show(); confirmDialog.setClicklistener(new ConfirmDialog.ClickListenerInterface() { @Override public void doConfirm() { // TODO Auto-generated method stub confirmDialog.dismiss(); //toUserHome(context); AppManager.getAppManager().AppExit(context); } @Override public void doCancel() { // TODO Auto-generated method stub confirmDialog.dismiss(); } }); }
调用中实现了此控件的内部接口,并赋给控件本身,以此在点击按钮时实现基于外部具体业务逻辑的函数回调。到此自定义对话框就完成了。
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