SharedPreferences+Handler+Thread完成延迟3秒加载和判断是否第一次进入

利用SharedPreferences存储判断是否第一次进入

SharedPreferences setting = getSharedPreferences(SHARE_APP_TAG,
						0);
				Boolean user_first = setting.getBoolean("FIRST", true);
				if (user_first) {// 判断是否第一次进入
					setting.edit().putBoolean("FIRST", false).commit();
					startActivity(new Intent(SplashActivity.this,
							ExplainActivity.class));// 引导界面
				} else {
					startActivity(new Intent(SplashActivity.this,
							MainActivity.class));// 主界面
				}
				finish();
				// 实例化Editor对象
				SharedPreferences.Editor editor = setting.edit();
				// 存入数据
				editor.putBoolean("FIRST", false);
				// 提交修改
				editor.commit();
           

Handler+Thread实现界面的延迟加载

new Thread(new Runnable() {

			@Override
			public void run() {
				try {
					Thread.sleep(3000);
					Message msg = Message.obtain();
					//通知Handler进行界面更新
					msg.what = GO_ACTIVITY;
					handler.sendMessage(msg);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		}).start();
           
    
Handler handler = new Handler() {

		@Override
		public void handleMessage(Message msg) {
			switch (msg.what) {
			case GO_ACTIVITY:
				
					startActivity(new Intent(SplashActivity.this,
							MainActivity.class));// 主界面
				
				break;

			default:
				break;
			}
		}
	};
           
   
        
 
 
 最后奉上欢迎界面SharedPreferences+Handler+Thread完成延迟3秒加载和判断是否第一次进入的全部代码            
public class SplashActivity extends Activity {

	protected static final int GO_ACTIVITY = 0;
	protected static final String SHARE_APP_TAG = null;

	Handler handler = new Handler() {

		@Override
		public void handleMessage(Message msg) {
			switch (msg.what) {
			case GO_ACTIVITY:
				//sp存储
				SharedPreferences setting = getSharedPreferences(SHARE_APP_TAG,
						0);
				Boolean user_first = setting.getBoolean("FIRST", true);
				if (user_first) {// 判断是否第一次进入
					setting.edit().putBoolean("FIRST", false).commit();
					startActivity(new Intent(SplashActivity.this,
							ExplainActivity.class));// 引导界面
				} else {
					startActivity(new Intent(SplashActivity.this,
							MainActivity.class));// 主界面
				}
				finish();
				// 实例化Editor对象
				SharedPreferences.Editor editor = setting.edit();
				// 存入数据
				editor.putBoolean("FIRST", false);
				// 提交修改
				editor.commit();
				break;

			default:
				break;
			}
		}
	};

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_splash);
		initView();
	}

	// 设置延迟3秒
	private void initView() {
		new Thread(new Runnable() {

			@Override
			public void run() {
				try {
					Thread.sleep(3000);
					Message msg = Message.obtain();
					//通知Handler进行界面更新
					msg.what = GO_ACTIVITY;
					handler.sendMessage(msg);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		}).start();
	}
}