倒计时延时跳转和登录记住密码

//布局

</RelativeLayout>

//页面赋值 Handler

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {

   private Button btn_times;
   // 定义临时变量
   int t = 5;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
       btn_times = (Button) findViewById(R.id.btn_times);
       btn_times.setOnClickListener(new OnClickListener() {

           @Override
           public void onClick(View v) {
               // TODO Auto-generated method stub
               // 为0时跳转
               t = 0;
           }
       });
       handler.sendEmptyMessage(0);
       btn_times.setText("跳转" + t);
   }

   Handler handler = new Handler() {
       public void handleMessage(android.os.Message msg) {
           switch (msg.what) {
           case 0:
               if (t<=0) {
                   startActivity(new Intent(MainActivity.this,TwoActivity.class));
                   finish();
               }else {
                   t--;
                   btn_times.setText("跳转" + t);
                   Message message = new Message();
                   message.what = 0;
                   handler.sendMessageDelayed(message, 1000);
               }
               break;

           default:
               break;
           }
       };
   };

   @Override
   protected void onDestroy() {
       // TODO Auto-generated method stub
       super.onDestroy();
       handler.removeCallbacksAndMessages(null);
   }
}

//登录页面的布局

</LinearLayout>

//存储数据下次登录不在显示

package com.example.yuekao5;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v7.widget.ShareActionProvider;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;

public class TwoActivity extends FragmentActivity {

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

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_two);
       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);
       btn_deng = (Button) findViewById(R.id.btn_deng);
       sharedPreferences = getSharedPreferences("1606B", MODE_PRIVATE);

       boolean isJZ = sharedPreferences.getBoolean("isJZ", false);
       String username = sharedPreferences.getString("username", "");
       String password = sharedPreferences.getString("password", "");
       if (isJZ) {
           edit_name.setText(username);
           edit_pass.setText(password);
           check_jz.setChecked(true);
       }
       boolean isZD = sharedPreferences.getBoolean("isZD", false);
       if (isZD) {
           startActivity(new Intent(TwoActivity.this, ThreeActivity.class));
           finish();
       }
       btn_deng.setOnClickListener(new OnClickListener() {

           @Override
           public void onClick(View v) {
               // TODO Auto-generated method stub
               // 获取账号密码
               String username = edit_name.getText().toString().trim();
               String password = edit_pass.getText().toString().trim();
               if (check_jz.isChecked()) {
                   Editor editor = sharedPreferences.edit();
                   editor.putString(username, "username");
                   editor.putString(password, "password");
                   editor.putBoolean("isJZ", true);
                   editor.commit();
               }
               if (check_zd.isChecked()) {
                   Editor editor = sharedPreferences.edit();
                   editor.putBoolean("isZD", true);
                   editor.commit();
               }
               startActivity(new Intent(TwoActivity.this, ThreeActivity.class));
               finish();
           }
       });
   }
}

倒计时延时跳转和登录记住密码

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