SharedPreferences记住信息

一、点击多选框记住密码

public class Main3Activity extends Activity {

 private EditText name;
 private EditText pwd;
 private CheckBox ck;
 private Button login;
 private SharedPreferences sp;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main3);
  name=(EditText)findViewById(R.id.name);
  pwd=(EditText)findViewById(R.id.pwd);
  ck=(CheckBox)findViewById(R.id.ck);
  login=(Button)findViewById(R.id.login);
  
  
  
  sp = getSharedPreferences("mydata", MODE_PRIVATE);
  boolean jzck = sp.getBoolean("jzck", false);
  String name1 = sp.getString("name", "");
  String pwd1 = sp.getString("pwd", "");
  
  if(jzck){
   ck.setChecked(jzck);
   name.setText(name1);
   pwd.setText(pwd1);
  }
  
  login.setOnClickListener(new OnClickListener() {
   
   @Override
   public void onClick(View v) {
    String na=name.getText().toString();
    String pass=pwd.getText().toString();
    if(na.equals("")||pass.equals("")){
     Toast.makeText(Main3Activity.this, "账号和密码不能为空", 0).show();
    }else{
     Editor edit = sp.edit();
     edit.putBoolean("jzck", true);
     if(ck.isChecked()){
      edit.putString("name",na );
      edit.putString("pwd", pass);
     }else{
      edit.putString("name", "");
      edit.putString("pwd", "");
     }
     edit.commit();
     Intent intent=new Intent(Main3Activity.this, Main4Activity.class);
     intent.putExtra("name", na);
     intent.putExtra("pwd", pass);
     startActivity(intent);
     
    }
    
    
   }
  });
 }

}

二、记住页面

sp = getSharedPreferences("mydata", MODE_PRIVATE);
  boolean jz = sp.getBoolean("ck", false);
  if(jz){
   Intent intent=new Intent(Main2Activity.this, Main3Activity.class);
   startActivity(intent);
  }
  

@Override
   public void onPageSelected(int arg0) {
    for (int i = 0; i < ids.length; i++) {
     if(i==arg0){
      RadioButton rb=(RadioButton) findViewById(ids[i]);
      rb.setChecked(true);
      if(i==imgs.length-1){
       Editor edit = sp.edit();
       edit.putBoolean("ck", true);
       edit.commit();
       Intent intent=new Intent(Main2Activity.this, Main3Activity.class);
       startActivity(intent);
      }
     }
    }
    
   }
   

三、直接记住密码

sp = getSharedPreferences("mydata", MODE_PRIVATE);boolean jz = sp.getBoolean("jz", false);String sptel = sp.getString("tel", "");String sppwd = sp.getString("pwd", "");if (jz){    logpwd.setText(sppwd);    logtel.setText(sptel);}

@Overridepublic void setLogvSuccess(final LogBean logBean) {    final String code = logBean.getCode();    runOnUiThread(new Runnable() {        @Override        public void run() {            if ("0".equals(code)){                Toast.makeText(LoginActivity.this,logBean.getMsg(),Toast.LENGTH_SHORT).show();                SharedPreferences.Editor edit = sp.edit();                edit.putBoolean("jz", true);                edit.putString("tel",tel);                edit.putString("pwd",pwd);                edit.commit();                Intent intent=new Intent(LoginActivity.this,SelectActivity.class);                startActivity(intent);                Log.d("--",logBean.getMsg());            }else{                Toast.makeText(LoginActivity.this,logBean.getMsg(),Toast.LENGTH_SHORT).show();                Log.d("22",logBean.getMsg());            }        }    });}