报错信息
1942-1966/system_process E/ViewRootImpl[myapplication]: Attempting to destroy the window while drawing!
window=android.view.ViewRootImpl@3bcd89a, title=Splash Screen com.example.administrator.myapplication
1413-1451/? E/SurfaceFlinger: ro.sf.lcd_density must be defined as a build property
我的代码
getPassword.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View view) {
userName=confirmID.getText().toString().trim();
psw=newPassword.getText().toString().trim();
pswAgain=confirmNewPassword.getText().toString().trim();
if (TextUtils.isEmpty(userName)) {
Toast.makeText(activity_forget.this,"请输入学号",Toast.LENGTH_SHORT).show();
return;
}else if(TextUtils.isEmpty(psw)){
Toast.makeText(activity_forget.this, "请输入新密码", Toast.LENGTH_SHORT).show();
return;
}else if(TextUtils.isEmpty(pswAgain)){
Toast.makeText(activity_forget.this, "请确认新密码", Toast.LENGTH_SHORT).show();
return;
}else if(!psw.equals(pswAgain)){
Toast.makeText(activity_forget.this, "请确认你的密码", Toast.LENGTH_SHORT).show();
return;
/**
*从SharedPreferences中读取输入的用户名,判断SharedPreferences中是否有此用户名
*/
}else if(!isExistUserName(userName)){
Toast.makeText(activity_forget.this, "此学号不存在", Toast.LENGTH_SHORT).show();
return;
}else{
Toast.makeText(activity_forget.this, "注册成功", Toast.LENGTH_SHORT).show();
//把账号、密码和账号标识保存到sp里面
/**
* 保存账号和密码到SharedPreferences中
*/
saveRegisterInfo(userName, psw);
//注册成功后把账号传递到LoginActivity.java中
// 返回值到loginActivity显示
Intent data = new Intent();
data.putExtra("userName", userName);
setResult(RESULT_OK, data);
//RESULT_OK为Activity系统常量,状态码为-1,
// 表示此页面下的内容操作成功将data返回到上一页面,如果是用back返回过去的则不存在用setResult传递data值
activity_forget.this.finish();
}
}
});
下面是两个用到的函数
private boolean isExistUserName(String userName){
boolean has_userName=false;
//mode_private SharedPreferences sp = getSharedPreferences( );
// "loginInfo", MODE_PRIVATE
SharedPreferences sp=getSharedPreferences("loginInfo", MODE_PRIVATE);
//获取密码
String spPsw=sp.getString(userName, "");//传入用户名获取密码
//如果密码不为空则确实保存过这个用户名
if(!TextUtils.isEmpty(spPsw)) {
has_userName=true;
}
return has_userName;
}
private void saveRegisterInfo(String userName,String psw){
String md5Psw = MD5Utils.md5(psw);//把密码用MD5加密
//loginInfo表示文件名, mode_private SharedPreferences sp = getSharedPreferences( );
SharedPreferences sp=getSharedPreferences("loginInfo", MODE_PRIVATE);
//获取编辑器, SharedPreferences.Editor editor -> sp.edit();
SharedPreferences.Editor editor=sp.edit();
//以用户名为key,密码为value保存在SharedPreferences中
//key,value,如键值对,editor.putString(用户名,密码);
editor.putString(userName, md5Psw);
//提交修改 editor.commit();
editor.commit();
}