Question

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现在是我的项目情况。

MainActivity启动了
SplashActivity称为MainActivity onCreate（）

考虑一下，看来没有问题。但是在应用启动之后在MainActivity通话之前，SplashActivity屏幕会短暂可见。

令人惊讶的是，我没有在其他设备上看到它，只有银河s8。

当然，我知道这不是一般结构。但是我无法理解，因为我一直在正常工作。白色是冷启动样式和splashActivity。红色是mainActivity

protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // some getIntent code

    startActivityForResult(new Intent(this, SplashActivity.class), RESULTCODE_);

    setInitLayout();
}

清单

<activity android:name=".MainActivity"
    android:screenOrientation="portrait"
    android:theme="@style/SplashTheme" >
    <intent-filter>
       <action android:name="android.intent.action.MAIN" />
       <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

<activity android:name=".SplashActivity"
    android:configChanges="orientation|keyboard|keyboardHidden|screenSize"
    android:screenOrientation="portrait"
    android:theme="@style/SplashTheme" >
</activity>

minSdkVersion 21

targetSdkVersion 28

Answer 1

如果您将样式与 android:windowBackground 一起用于启动活动，请不要调用 setContentView()。仅此而已！

Answer 2

您已将MainActivity类作为清单中的启动器活动。我假设您的启动画面活动称为SplashActivity。如果您希望它先显示为SplashScreen，然后再显示MainActivity，则将清单代码更改为：

<activity android:name=".SplashActivity"
    android:screenOrientation="portrait"
    android:theme="@style/SplashTheme" >
    <intent-filter>
       <action android:name="android.intent.action.MAIN" />
       <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

<activity android:name=".MainActivity"
    android:configChanges="orientation|keyboard|keyboardHidden|screenSize"
    android:screenOrientation="portrait"
    android:theme="@style/SplashTheme" >
</activity>

<activity android:name=".IntroActivity"
    android:configChanges="orientation|keyboard|keyboardHidden|screenSize"
    android:screenOrientation="portrait"
    android:theme="@style/SplashTheme" >
</activity>

然后按照Ismail的建议在he has provided

链接中创建您的SplashActivity。

Answer 3

以这种方式使用启动画面不是一个好主意。应当严格避免。

使用这种方法，您还可以导致启动启动期间出现空白白页的问题，而这正是您发生的事情！

我建议您阅读this文章，并尝试以正确的方式制作您的启动画面，以避免此类行为！

Answer 4

使用此线程代码进行启动活动将更好地工作-

公共类SplashActivity扩展了AppCompatActivity {

private static int SPLASH_TIME_OUT = 3000;

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

        Thread thread = new Thread() {
            public  void run(){
                try{
                    sleep(3000);

                }catch (InterruptedException e){
                    e.printStackTrace();
                }finally {
                    Intent mainAct=new Intent(SplashActivity.this, MainActivity.class);
                    startActivity(mainAct);
                    finish();
                }
            }
        };
        thread.start();

    }


    @Override
    protected void onDestroy() {

        super.onDestroy();

    }

}

Answer 5

Use this thread code for splash activity it will better work -

public class SplashActivity extends AppCompatActivity {

    private static int SPLASH_TIME_OUT = 3000;

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

            Thread thread = new Thread() {
                public  void run(){
                    try{
                        sleep(3000);

                    }catch (InterruptedException e){
                        e.printStackTrace();
                    }finally {
                        Intent mainAct=new Intent(SplashActivity.this, MainActivity.class);
                        startActivity(mainAct);
                        finish();
                    }
                }
            };
            thread.start();

        }


        @Override
        protected void onDestroy() {

            super.onDestroy();

        }

    }


and your manifest class will be look like this : 

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    package="com.example.diskapp">

    <uses-permission android:name="android.permission.INTERNET" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/logo"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme"
        tools:ignore="AllowBackup,GoogleAppIndexingWarning"> 
      <activity android:name=".Activities.SplashActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".Activities.MainActivity" />
    </application>

</manifest>

Answer 6

仅在有限的时间内添加处理程序并完成当前活动

Handler handler = new Handler();
        handler.postDelayed(new Runnable() {
            @Override
            public void run() {
                //actvity transaction
            }
        },3000);

为什么启动活动时闪烁活动

6 个答案: