sharedPreferences

package com.example.tesst_denglv;


import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
public class MainActivity extends Activity {

    private EditText edit_pass;
	private EditText edit_name;
	private CheckBox check_jz;
	private CheckBox check_zd;
	private Button but_login;
	private SharedPreferences sharedPreferences;

	@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initdata();
        boolean check_zdUI = sharedPreferences.getBoolean("check_zdUI",false);
        boolean check_jzUI = sharedPreferences.getBoolean("check_jzUI",false);
        if (check_zdUI) {
        	Intent intent = new Intent(MainActivity.this,login.class);
			startActivity(intent);
			finish();
		}
        
        if (check_jzUI) {
			String username = sharedPreferences.getString("username", "");
			String password = sharedPreferences.getString("password", "");
			edit_pass.setText(password);
			edit_name.setText(username);
			check_jz.setChecked(true);
		}
        
        
        but_login.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Editor edit = sharedPreferences.edit();
				String username = edit_name.getText().toString().trim();
				String password = edit_pass.getText().toString().trim();
				if (check_jz.isChecked()) {
					edit.putBoolean("check_jzUI", true);
				}
				if (check_zd.isChecked()) {
					edit.putBoolean("check_zdUI", true);
				}
				edit.putString("username", username);
				edit.putString("password", password);
				edit.commit();
				
				
				Intent intent = new Intent(MainActivity.this,login.class);
				startActivity(intent);
				finish();
			}
		});
    }
	
	
	
	
	
	private void initdata() {
		// TODO Auto-generated method stub
		 edit_name = (EditText) findViewById(R.id.edit_name);
	        edit_pass = (EditText) findViewById(R.id.edit_pass);
	        check_jz = (CheckBox) findViewById(R.id.check_jz);
	        check_zd = (CheckBox) findViewById(R.id.check_zd);
	        but_login = (Button) findViewById(R.id.but_log);
	        sharedPreferences = getSharedPreferences("1606B", MODE_PRIVATE);
	}
	
	
}