package net.micode.notes.ui; import android.content.Intent; import android.content.SharedPreferences; import android.os.Bundle; import android.view.View; import android.view.WindowManager; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; import android.app.Activity; import net.micode.notes.R; public class LoginActivity extends Activity{ EditText lgn_password; Button lgn_login; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); SharedPreferences pref = getSharedPreferences("user management", MODE_PRIVATE); boolean User_boolean = pref.getBoolean("user", false); //检查用户是否设置了密码 if (!User_boolean) { //如果用户没有设置密码,则直接跳转到便签主界面 Intent intent = new Intent(LoginActivity.this, NotesListActivity.class); startActivity(intent); finish(); } setContentView(R.layout.activity_login); getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE | WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE); lgn_password = (EditText)findViewById(R.id.lgn_password); lgn_login = (Button) findViewById(R.id.login); lgn_login.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { SharedPreferences pref = getSharedPreferences("user management", MODE_PRIVATE); String password = pref.getString("password", ""); if (password.equals(" ") == false && password.equals(lgn_password.getText().toString()) == true) { Intent intent = new Intent(LoginActivity.this, NotesListActivity.class); startActivity(intent); finish(); } else { Toast.makeText(LoginActivity.this, "密码错误", Toast.LENGTH_SHORT).show(); lgn_password.setText(""); //清空密码框内的输入 } } } ); } }