Android Adapter、Activity回传数据、发送短信

一、重写BaseAdapter的getView方法

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View view;
    if (convertView == null) {
        view = View.inflate(getApplicationContext(), R.layout.item_phone, null);
    } else {
        view = convertView;
    }
    TextView name = (TextView) view.findViewById(R.id.tv_name);
    TextView phone = (TextView) view.findViewById(R.id.tv_phone);

    name.setText(personList.get(position).getName());
    phone.setText(personList.get(position).getPhone());

    return view;
}

二、ArrayAdapter构造

//Parameters
//context    The current context.
//resource    The resource ID for a layout file containing a TextView to use when instantiating views（只能有一个TextView的布局资源）.
//objects    The objects to represent in the ListView.
public ArrayAdapter (Context context, int resource, List<T> objects)

三、Activity回传数据

1、启动新Activity：startActivityForResult(intent, RequestCode);

2、新Activity回传数据（数据保存在intent中）：

setResult(20, intent);
finish();

3、原Activity获取数据：

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == 10) {
        et_phone.setText(data.getStringExtra("phone"));
    } else if (resultCode == 20) {
        et_content.setText(data.getStringExtra("content"));
    }
}

四、发送短信

public void btnSendMsg(View v) {
    String content = et_content.getText().toString().trim();
    String phone = et_phone.getText().toString().trim();

    SmsManager sender = SmsManager.getDefault();
    ArrayList<String> msgList = sender.divideMessage(content);

    for(int i=0;i<msgList.size();i++){
        sender.sendTextMessage(phone, null, msgList.get(i), null, null);
    }
}