显示正在加载 activity 直到 main activity 完全加载

Question

这里是 activity 的主要代码，将在 onCreate 方法完全执行后加载。
引用 This for closing one activity from another

public class DictionarySscWords extends AppCompatActivity implements View.OnClickListener, TextToSpeech.OnInitListener 
{
protected void onCreate(Bundle savedInstanceState) 
 {
  super.onCreate(savedInstanceState);
  context = this;
  Intent myIntent = new Intent(DictionarySscWords.this,LoadingIt.class);
  startActivity(myIntent);
  setContentView(R.layout.activity_main);
  //all this activity work
  LoadingIt.fa.finish(); //close Loading activity
 }
}

下面是我的loadingIt的代码activity

public class LoadingIt extends AppCompatActivity {
Context context;
public static LoadingIt fa;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_loading_it);
    context=this;
    fa = this;
    ProgressDialog dialog=new ProgressDialog(context);
    dialog.setMessage("Loading Please wait!!");
    dialog.setCancelable(false);
    dialog.setInverseBackgroundForced(false);
    dialog.show();
}
}

问题是 LoadingIt activity 从未完成并且应用程序卡在加载屏幕上我想完成这个activity 作为之前的活动 onCreate方法完全执行
谢谢

Answer 1

我觉得您的解决方案并不是真正的最佳实践。这是我会做的：

声明LoadingItactivity为启动项activity
在onCreate方法中，加载后台需要的资源（比如AsyncTask或者IntentService）
加载完成后，完成LoadingIt activity并显示DictionarySscWords activity

如果你post加载逻辑，我可以提供一个示例实现。

Answer 2

你可以在LoadingIt的onCreate()中使用Threadclass

public class LoadingIt extends AppCompatActivity {

   protected void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);
      getSupportActionBar().hide();
      setContentView(R.layout.activity_loading_it);

      Thread loadingThread = new Thread() {

        @Override
        public void run() {
            try {
                super.run();
                sleep(2000);
            } catch (Exception e) {

            } finally {

                Intent main = new Intent(LoadingIt.this,MainActivity.class);
                startActivity(main);
                finish();
            }
        }
    };
    loadingThread.start();
}

显示正在加载 activity 直到 main activity 完全加载

Showing Loading activity until main activity is fully loaded

java

android

loading

progressdialog

android-activity