package com.glandroid.injune11;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
private EditText name;
private EditText password;
private CheckBox check;
private SharedPreferences sp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout);
init();
sp = PreferenceManager.getDefaultSharedPreferences(MainActivity.this);
boolean ischeck = sp.getBoolean("ischeck", false);
String sname = sp.getString("name", null);
String spassword = sp.getString("password", null);
if(ischeck)
{
name.setText(sname);
password.setText(spassword);
}
}
private void init() {
name = (EditText) findViewById(R.id.etname);
password = (EditText) findViewById(R.id.etpassword);
findViewById(R.id.login).setOnClickListener(this);
check = (CheckBox) findViewById(R.id.check);
}
@Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.login:
String tname=name.getText().toString();
String tpassword=password.getText().toString();
SharedPreferences.Editor edit = sp.edit();
if(tname.equals("admin")&&tpassword.equals("123456"))
{
Toast.makeText(this,"登陆成功", Toast.LENGTH_SHORT).show();
if(check.isChecked())
{
edit.putString("name",tname);
edit.putString("password",tpassword);
edit.putBoolean("ischeck",check.isChecked());
}
else
{
edit.clear();
}
edit.commit();
}
else
{
Toast.makeText(this,"登陆失败", Toast.LENGTH_SHORT).show();
}
break;
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:text="用户名"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="wrap_content"/>
<EditText
android:id="@+id/etname"
android:layout_weight="3"
android:layout_width="0dp"
android:layout_height="wrap_content"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:text="密码"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="wrap_content"/>
<EditText
android:id="@+id/etpassword"
android:layout_weight="3"
android:layout_width="0dp"
android:layout_height="wrap_content"/>
</LinearLayout>
<CheckBox
android:id="@+id/check"
android:text="保存"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<Button
android:layout_gravity="center_horizontal"
android:id="@+id/login"
android:text="登录"
android:background="#04ff3a"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
QQ登录带数据保存基础案例
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转载自blog.csdn.net/qq_41039734/article/details/80728777
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