我的手机管家骚扰拦截 逻辑代码

Posted 2020-08-03

骚扰拦截：

　　　加载数据库中的数据到ListViw；

　　　加载是一个耗时的操作，  在加载完了通知listview加载数据，

（1）这就用到了线程和Handler结合

/*
     * 加载数据库中的黑名单
     */
    public void initData() {
        progressBar.setVisibility(View.VISIBLE);
        isLoading = true;// 表示正在加载数据
        new Thread(new Runnable() {
            @Override
            public void run() {
                if(list == null){//第一次加载。 
                    list = BlackNumberDao.getInstance(getApplicationContext()).findPart(index);
                }else {
                    list = BlackNumberDao.getInstance(getApplicationContext()).findPart(index);
                }
                myHandler.sendEmptyMessage(0);
            }
        }).start();
    }
    private Handler myHandler = new Handler(){
        public void handleMessage(Message msg) {
            if(adapter == null){
                adapter = new BlackNumberAdapter(getApplicationContext(), list);
                lv.setAdapter(adapter);
                lv.setOnItemClickListener(listener);
            } 
            adapter.notifyDataSetChanged();//加载刷新数据
            progressBar.setVisibility(View.GONE);
            index = list.size();
            isLoading = false;//不在刷新数据
        };
    };

(2)添加黑名单：

    /**
     * 添加拦截信息， 弹出一个对话框， 添加拦截信息
     * @param v
     */
    public void onAdd(View v){
        showDialog();
    }
    /**
     * 显示对话框
     */
    public void showDialog(){//自定义提示框
        Builder builder = new Builder(this);
        final AlertDialog dialog = builder.create();
        View view = View.inflate(this, R.layout.dialog_add_black_number, null);
        dialog.setView(view, 0, 0, 0, 0);// 去掉上下左右边距
        Button btnOK = (Button) view.findViewById(R.id.btn_ok);
        Button btnCancel = (Button) view.findViewById(R.id.btn_cancel);
        final EditText etNumber = (EditText) view.findViewById(R.id.et_number);
        final RadioGroup rgMode = (RadioGroup) view.findViewById(R.id.rg_mode);
        btnOK.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                String number = etNumber.getText().toString().trim();
                if (TextUtils.isEmpty(number)) {
                    Toast.makeText(BlackNumberActivity.this, "输入内容不能为空!", Toast.LENGTH_SHORT).show();
                    
                    return;
                }
                int mode = 1;
                int id = rgMode.getCheckedRadioButtonId();// 获取当前选中的radiobutton的id
                switch (id) {
                case R.id.rb_phone:
                    mode = 1;
                    break;
                case R.id.rb_sms:
                    mode = 2;
                    break;
                case R.id.rb_all:
                    mode = 3;
                    break;
                }
                //保存到数据库中
                BlackNumberDao.getInstance(BlackNumberActivity.this).add(number, mode);
                dialog.dismiss();
                
                //显示到列表的第一个位置
                BlackNumberInfo  info = new BlackNumberInfo(number, mode);
                list.add(0,info);
                adapter.notifyDataSetChanged();
                
            }
        });
        btnCancel.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                dialog.dismiss();
            }
        });
        dialog.show();
    }
}

 

 

（3）响应listView的点击事件

/**
     * ListView的item点击事件监听
     */
    private OnItemClickListener listener = new OnItemClickListener(){
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                long id) {
            BlackNumberInfo info = list.get(position);
            //删除黑名单
            BlackNumberDao.getInstance(BlackNumberActivity.this).delete(info.number);
            list.remove(position);
            adapter.notifyDataSetChanged();
        }
        
    }; 

 

 

 

package com.chb.myphonesave.activity;

import java.util.List;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.RadioGroup;
import android.widget.Toast;

import com.chb.myphonesave.R;
import com.chb.myphonesave.adapter.BlackNumberAdapter;
import com.chb.myphonesave.dao.BlackNumberDao;
import com.chb.myphonesave.entity.BlackNumberInfo;

public class BlackNumberActivity extends Activity {
    private ListView lv;
    private ProgressBar progressBar;
    private List<BlackNumberInfo> list;
    private int index;//加载黑名单条数
    private boolean isLoading;// 是否正在加载
    private  BlackNumberAdapter adapter;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_blacknumber);
        lv = (ListView) findViewById(R.id.abn_lv);
        progressBar = (ProgressBar) findViewById(R.id.abn_progressbar);
        initData();
    }
    /*
     * 加载数据库中的黑名单
     */
    public void initData() {
        progressBar.setVisibility(View.VISIBLE);
        isLoading = true;// 表示正在加载数据
        new Thread(new Runnable() {
            @Override
            public void run() {
                if(list == null){//第一次加载。 
                    list = BlackNumberDao.getInstance(getApplicationContext()).findPart(index);
                }else {
                    list = BlackNumberDao.getInstance(getApplicationContext()).findPart(index);
                }
                myHandler.sendEmptyMessage(0);
            }
        }).start();
    }
    private Handler myHandler = new Handler(){
        public void handleMessage(Message msg) {
            if(adapter == null){
                adapter = new BlackNumberAdapter(getApplicationContext(), list);
                lv.setAdapter(adapter);
                lv.setOnItemClickListener(listener);
            } 
            adapter.notifyDataSetChanged();//加载刷新数据
            progressBar.setVisibility(View.GONE);
            index = list.size();
            isLoading = false;//不在刷新数据
        };
    };
    /**
     * ListView的item点击事件监听
     */
    private OnItemClickListener listener = new OnItemClickListener(){
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                long id) {
            BlackNumberInfo info = list.get(position);
            //删除黑名单
            BlackNumberDao.getInstance(BlackNumberActivity.this).delete(info.number);
            list.remove(position);
            adapter.notifyDataSetChanged();
        }
        
    }; 
    
    /**
     * 添加拦截信息， 弹出一个对话框， 添加拦截信息
     * @param v
     */
    public void onAdd(View v){
        showDialog();
    }
    
    
    /**
     * 显示对话框
     */
    public void showDialog(){
        Builder builder = new Builder(this);
        final AlertDialog dialog = builder.create();
        View view = View.inflate(this, R.layout.dialog_add_black_number, null);
        dialog.setView(view, 0, 0, 0, 0);// 去掉上下左右边距
        Button btnOK = (Button) view.findViewById(R.id.btn_ok);
        Button btnCancel = (Button) view.findViewById(R.id.btn_cancel);
        final EditText etNumber = (EditText) view.findViewById(R.id.et_number);
        final RadioGroup rgMode = (RadioGroup) view.findViewById(R.id.rg_mode);
        btnOK.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                String number = etNumber.getText().toString().trim();
                if (TextUtils.isEmpty(number)) {
                    Toast.makeText(BlackNumberActivity.this, "输入内容不能为空!", Toast.LENGTH_SHORT).show();
                    
                    return;
                }
                int mode = 1;
                int id = rgMode.getCheckedRadioButtonId();// 获取当前选中的radiobutton的id
                switch (id) {
                case R.id.rb_phone:
                    mode = 1;
                    break;
                case R.id.rb_sms:
                    mode = 2;
                    break;
                case R.id.rb_all:
                    mode = 3;
                    break;
                }
                //保存到数据库中
                BlackNumberDao.getInstance(BlackNumberActivity.this).add(number, mode);
                dialog.dismiss();
                
                //显示到列表的第一个位置
                BlackNumberInfo  info = new BlackNumberInfo(number, mode);
                list.add(0,info);
                adapter.notifyDataSetChanged();
                
            }
        });
        btnCancel.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                dialog.dismiss();
            }
        });
        dialog.show();
    }
}