版权声明:心灵泽尘 https://blog.csdn.net/github_38313789/article/details/83757189
package com.gaozewen.qqloginweb;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Toast;
import com.gaozewen.qqloginweb.utils.StreamUtils;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
public class MainActivity extends AppCompatActivity {
private static final int GET_SERVER_RESP = 1;
private static final int GET_ERROR = 2;
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case GET_SERVER_RESP:
Toast.makeText(MainActivity.this, (String)msg.obj, Toast.LENGTH_SHORT).show();
break;
case GET_ERROR:
Toast.makeText(MainActivity.this, "登陆失败", Toast.LENGTH_SHORT).show();
break;
}
mBt_login.setEnabled(true);
}
};
private EditText mEt_qqNumber;
private EditText mEt_password;
private CheckBox mCb_remember;
private Button mBt_login;
/**
* 1.定义一个共享参数(存放数据方便的 api)
*/
private SharedPreferences sp;
// 新建 res/drawable-hdpi
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 2. 通过上下文得到一个共享参数的实例对象
sp = this.getSharedPreferences("config", MODE_PRIVATE);
mEt_qqNumber = findViewById(R.id.et_qqnumber);
mEt_password = findViewById(R.id.et_password);
mCb_remember = findViewById(R.id.cb_remember);
mBt_login = findViewById(R.id.bt_login);
readStore();
}
/**
* 从 sp 文件中读取信息
*/
private void readStore() {
// data/data/包名/shared_prefs
String qq = sp.getString("qq", "");
String password = sp.getString("password", "");
mEt_qqNumber.setText(qq);
mEt_password.setText(password);
mCb_remember.setChecked(true);
}
// 登陆按钮的点击事件
public void login(View view) {
final String qq = mEt_qqNumber.getText().toString().trim();
final String password = mEt_password.getText().toString().trim();
if (TextUtils.isEmpty(qq) || TextUtils.isEmpty(password)) {
Toast.makeText(this, "用户名和密码不能为空", Toast.LENGTH_SHORT).show();
} else {
// 判断是否要记录用户名和密码
if (mCb_remember.isChecked()) {
// 被选中状态需要记录用户名和密码
// 3. 将数据保存到 sp 文件中
SharedPreferences.Editor edit = sp.edit();
edit.putString("qq", qq);
edit.putString("password", password);
edit.apply(); // apply() 异步开个线程执行 commit() 同步 立即执行
}
// 发请求时禁用 button
mBt_login.setEnabled(false);
new Thread() {
@Override
public void run() {
try {
Thread.sleep(5000);
String path = String.format("http://192.168.1.102:8080/login?username=%s&password=%s", qq, password);
URL url = new URL(path);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setConnectTimeout(5000);
int code = conn.getResponseCode();
if (code == 200) {
InputStream is = conn.getInputStream();
String result = StreamUtils.readStream(is);
Message msg = Message.obtain();
msg.what = GET_SERVER_RESP;
msg.obj = result;
mHandler.sendMessage(msg);
} else {
Message msg = Message.obtain();
msg.what = GET_ERROR;
mHandler.sendMessage(msg);
}
} catch (Exception e) {
e.printStackTrace();
Message msg = Message.obtain();
msg.what = GET_ERROR;
mHandler.sendMessage(msg);
}
}
}.start();
}
}
}