import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import android.os.Bundle;
import android.os.IBinder;
import android.os.RemoteException;
import android.provider.ContactsContract;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.database.Cursor;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.ListView;
public class BlockMain extends Activity {
//记录黑名单的List
ArrayList<String> blockList = new ArrayList<String>();
TelephonyManager tManager;
//监听通话状态的监听器
CustomPhoneCallListener cpListener;
public class CustomPhoneCallListener extends PhoneStateListener{
@Override
public void onCallStateChanged(int state, String incomingNumber) {
switch (state) {
case TelephonyManager.CALL_STATE_IDLE:
break;
case TelephonyManager.CALL_STATE_OFFHOOK:
break;
//电话呼入时
case TelephonyManager.CALL_STATE_RINGING:
//如果该号码属于黑名单
if(isBlock(incomingNumber)){
try {
Method method = Class.forName("android.os.ServiceManager")
.getMethod("getService", String.class);
//获取远程TELEPHONY_SERVICE的IBinder对象的代理
IBinder binder = (IBinder) method.invoke(null,
new Object[]{TELEPHONY_SERVICE});
//将IBinder对象的代理转换为ITelephony对象
ITelephony telephony = ITelephony.Stub.asInterface(binder);
//挂断电话
telephony.endCall();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
} catch (RemoteException e) {
e.printStackTrace();
}
}
default:
break;
}
super.onCallStateChanged(state, incomingNumber);
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_block_main);
//获取系统的TelephonyManager管理器
tManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
cpListener = new CustomPhoneCallListener();
//通过TelephonyManager监听通话状态的改变
tManager.listen(cpListener, PhoneStateListener.LISTEN_CALL_STATE);
//获取程序的按钮，并为它的单击事件绑定监听器
findViewById(R.id.managerBlock).setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// 查询联系人的电话号码
final Cursor cursor = getContentResolver().query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null, null, null, null);
BaseAdapter adapter = new BaseAdapter() {
@Override
public View getView(int position, View convertView, ViewGroup parent) {
cursor.moveToPosition(position);
CheckBox rb = new CheckBox(BlockMain.this);
//获取联系人的电话号码，并去掉中间的中划线
String number = cursor.getString(cursor
.getColumnIndex(ContactsContract.
CommonDataKinds.Phone.NUMBER)).replace("-", "");
rb.setText(number);
//如果该号码已经被加入黑名单，默认勾选该号码
if(isBlock(number)){
rb.setChecked(true);
}
return rb;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public int getCount() {
return cursor.getCount();
}
};
//加载list.xml布局文件对象的View
View selectView = getLayoutInflater().inflate(R.layout.list, null);
//获取selectView中的名为list的ListView组件
final ListView listView = (ListView) selectView.findViewById(R.id.list);
listView.setAdapter(adapter);
new AlertDialog.Builder(BlockMain.this).setView(selectView)
.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// 清空blockList集合
blockList.clear();
//遍历ListView组件的每个列表项
for(int i = 0; i<listView.getCount() ; i++){
CheckBox checkBox = (CheckBox) listView.getChildAt(i);
//如果该列表项被勾选
if(checkBox.isChecked()){
//添加该列表项的电话号码
blockList.add(checkBox.getText().toString());
}
}
System.out.println(blockList);
}
}).show();
}
});
}
//判断某个电话号码是否在黑名单中
public boolean isBlock(String phone){
for(String s1 : blockList){
if(s1.equals(phone)){
return true;
}
}
return false;
}
}
程序的改进：
1.程序可通过后台运行的Service来监听号码，并设置该Service随系统开机自动运行。
2.程序应该把黑名单（也就是程序中blockList集合里的元素）写入文件中，这样即使手机关机、程序退出，黑名单信息依然不会丢失。
3、程序还应该提供一个输入框，让用户自行输入需要屏蔽的电话号码，这样该程序不仅可以屏蔽系统联系人的号码，也可屏蔽任何想屏蔽的号码。