卫士黑名单功能(ListView结合SQLite增删改)"/>
[android] 手机卫士黑名单功能(ListView结合SQLite增删改)
修改界面,在顶部横条上增加一个添加按钮,点击打开一个自定义对话框,输入电话号码和拦截模式保存到数据库
自定义对话框看这篇.html
添加记录
调用Builder对象的show()方法,获取AlertDialog对象
调用View.inflate()方法,将布局文件转成View对象
调用View对象的findViewById()方法,获取确认和取消的Button对象
调用Button对象的setOnClickListener()方法,设置点击事件,匿名内部类实现OnClickListener接口,重写onClick()方法
调用AlertDialog对象的dismiss()方法,可以关闭对话框
调用View对象的findViewById()方法,获取到各个控件的值,进行判断处理
调用之前定义好的Dao类BlackNumberAdo对象的add()方法,数据库增加一条记录,参数:String电话号码,String拦截模式
此时ListView并不会显出出来刚添加的记录,需要退出这个Activity重写进入,我们通知适配器数据更新
调用集合List对象的add()方法,添加一条数据,参数:0(第一个),数据
调用ListAdapter对象的notifyDataSetChanged()方法,通知数据更新
删除记录
条目布局文件中,在右侧放置一个垃圾桶的小图标,上下居中,父控件右边
安卓系统的点击事件和js的点击事件很相似,
参考这篇:.html
获取到删除按钮Button对象
调用Button对象,设置点击事件
获取AlertDialog.Builder对象,展示是否确认删除的对话框
调用AlertDialog.Builder对象,设置确认按钮和取消按钮,注意设置点击事件OnClickListener时,它所在的包是DialogInterface.OnClickListener
调用之前定义好的Dao类BlackNumberAdo对象的delete()方法,参数:String电话号码
调用集合List对象的remove()方法,删除一条数据,参数:int索引
调用ListAdapter对象的notifyDataSetChanged()方法,通知数据更新
CallSmsSafeActivity.java
package com.qingguow.mobilesafe;import java.util.HashMap; import java.util.List; import java.util.Map;import android.app.Activity; import android.app.AlertDialog; import android.app.AlertDialog.Builder; import android.content.DialogInterface; import android.os.Bundle; import android.text.TextUtils; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.Button; import android.widget.CheckBox; import android.widget.EditText; import android.widget.ImageView; import android.widget.ListView; import android.widget.TextView; import android.widget.Toast;import com.qingguow.mobilesafe.db.ado.BlackNumberAdo;/*** 通讯卫士* * @author taoshihan* */ public class CallSmsSafeActivity extends Activity {private ListView listview;private List<Map<String, String>> infos;private BlackNumberAdo dao;private MyAdapter myAdapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_call_sms_safe);listview = (ListView) findViewById(R.id.lv_blacknumber);myAdapter=new MyAdapter();dao = new BlackNumberAdo(this);infos = dao.findAll();listview.setAdapter(myAdapter);// //添加100条测试数据// Random random=new Random();// for(int i=1;i<=100;i++){// ado.add("18805419000"+i, String.valueOf(random.nextInt(3)+1));// } }class ViewHolder{public TextView phoneView;public TextView modeView;public ImageView iv_delete;}private class MyAdapter extends BaseAdapter {@Overridepublic int getCount() {// TODO Auto-generated method stubreturn infos.size();}@Overridepublic View getView(final int position, View convertView, ViewGroup parent) {View view;ViewHolder holder=new ViewHolder();if(convertView==null){view = View.inflate(CallSmsSafeActivity.this,R.layout.list_call_sms_safe_item, null);holder.phoneView=(TextView) view.findViewById(R.id.tv_main_phone);holder.modeView=(TextView) view.findViewById(R.id.tv_block_mode);holder.iv_delete=(ImageView) view.findViewById(R.id.iv_delete);view.setTag(holder);System.out.println("创建新的View对象"+position);}else{view=convertView;holder=(ViewHolder) view.getTag();System.out.println("使用历史View对象"+position);}holder.phoneView.setText(infos.get(position).get("phone"));switch (infos.get(position).get("mode")) {case "1":holder.modeView.setText("电话拦截");break;case "2":holder.modeView.setText("短信拦截");break;case "3":holder.modeView.setText("全部拦截");break;default:break;}//删除条目holder.iv_delete.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {AlertDialog.Builder builder=new AlertDialog.Builder(CallSmsSafeActivity.this);builder.setTitle("警告");builder.setMessage("是否确认删除?");builder.setPositiveButton("确认", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {infos.remove(position);myAdapter.notifyDataSetChanged();dao.delete(infos.get(position).get("phone"));}});builder.setNegativeButton("取消", null);builder.show();}});return view;}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn null;}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn 0;}}private EditText blackNumber;private CheckBox blockCall;private CheckBox blockSms;/*** 添加黑名单* @param v*/public void addCallSmsSafe(View v) {AlertDialog.Builder builder=new AlertDialog.Builder(this);View view=View.inflate(this, R.layout.dialog_add_safe_sms, null);builder.setView(view);final AlertDialog alertDialog=builder.show();Button submit=(Button) view.findViewById(R.id.bt_submit);Button cancel=(Button) view.findViewById(R.id.bt_cancel);blackNumber=(EditText) view.findViewById(R.id.et_black_number);blockCall=(CheckBox) view.findViewById(R.id.cb_block_call);blockSms=(CheckBox) view.findViewById(R.id.cb_block_sms);submit.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {String phone=blackNumber.getText().toString().trim();String mode = "3";if(TextUtils.isEmpty(phone)){Toast.makeText(CallSmsSafeActivity.this, "请输入手机号码", 0).show();}if(blockCall.isChecked()&&blockSms.isChecked()){//全部拦截mode="3";}else if(blockCall.isChecked()){//电话拦截mode="1";}else if(blockSms.isChecked()){//短信拦截mode="2";}else{Toast.makeText(CallSmsSafeActivity.this, "请勾选拦截模式", 0).show();}dao.add(phone, mode);Map<String, String> info=new HashMap<String, String>();info.put("phone", phone);info.put("mode", mode);infos.add(0,info);myAdapter.notifyDataSetChanged();alertDialog.dismiss();}});cancel.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {alertDialog.dismiss();}});} }
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[android] 手机卫士黑名单功能(ListView结合SQLite增删改)
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