android中的mvp模式：在splash頁面中，判斷是否有網絡連接，有則跳到下個頁面

來自： http://blog.csdn.net/knxw0001/article/details/39672917

2. 類目錄結構

3. model接口和實現
public interface INetConnect {
     boolean isNetConnect( Context context);
}
public class NetConnect implements INetConnect {


 @Override
 public boolean isNetConnect(Context context) {
        if (context != null) {
            ConnectivityManager mConnectivityManager = (ConnectivityManager) context
                      .getSystemService(Context. CONNECTIVITY_SERVICE);
            NetworkInfo mNetworkInfo = mConnectivityManager
                       .getActiveNetworkInfo();
             if (mNetworkInfo != null) {
                  return mNetworkInfo.isAvailable();
            }
       }
        return false;
 }


}

view接口
public interface ISplashView {
  void showProcessBar();
  void hideProcessBar();
  void showNetError();
  void startNextActivity();
}

presenter實現
public class SplashPresenter {
  private INetConnect connect;
  private ISplashView iView;
public SplashPresenter(ISplashView iView){

     this. iView = iView;
     connect = new NetConnect();

}
public void didFinishLoading(Context context){

     iView.showProcessBar();
     if( connect.isNetConnect(context)){
          iView.startNextActivity();
    } else{
          iView.showNetError();
    }
     iView.hideProcessBar();

}
}


6.activity中代碼
public class MainActivity extends Activity implements ISplashView{

 SplashPresenter presenter;
 private ProgressDialog progressBar;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
       setContentView(R.layout. activity_main);

        presenter = new SplashPresenter( this);
 }

 @Override
 protected void onResume() {
        super.onResume();
        presenter.didFinishLoading( this);
 }

 @Override
 public void showProcessBar() {
        if ( progressBar == null) {
             progressBar = new ProgressDialog( this);
             progressBar.setCancelable( true);
             progressBar.setCanceledOnTouchOutside( true);
             progressBar.setMessage( "更新數據中，請稍后" );
       }
        progressBar.show();
 }

 @Override
 public void hideProcessBar() {
        progressBar.hide();
 }

 @Override
 public void showNetError() {
       Toast. makeText(this, "暫無網絡", Toast.LENGTH_SHORT).show();
 }

 @Override
 public void startNextActivity() {
       Toast. makeText(this, "跳到下個activity", Toast.LENGTH_SHORT).show();
 }


}</pre> 




7. 源碼鏈接

http://download.csdn.net/detail/knxw0001/7990065