java - 应用程序需要 13 秒才能显示启动屏幕

Question

我的启动画面

/**
 * Created by HumzaYunas on 05/01/2016.
 */
import android.app.Activity;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.os.Bundle;
import android.view.Window;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;
import android.widget.LinearLayout;

public class splashscreen extends Activity {
    public void onAttachedToWindow() {
        super.onAttachedToWindow();
        Window window = getWindow();
        window.setFormat(PixelFormat.RGBA_8888);
    }
    /** Called when the activity is first created. */
    Thread splashTread;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_splashscreen);
        StartAnimations();
    }
    private void StartAnimations() {
        Animation anim = AnimationUtils.loadAnimation(this, R.anim.alpha);
        anim.reset();
        LinearLayout l=(LinearLayout) findViewById(R.id.lin_lay);
        l.clearAnimation();
        l.startAnimation(anim);

        anim = AnimationUtils.loadAnimation(this, R.anim.translate);
        anim.reset();
        ImageView iv = (ImageView) findViewById(R.id.splash);
        iv.clearAnimation();
        iv.startAnimation(anim);

        splashTread = new Thread() {
            @Override
            public void run() {
                try {
                    int waited = 0;
                    // Splash screen pause time
                    while (waited < 5000) {
                        sleep(100);
                        waited += 100;
                    }
                    Intent intent = new Intent(splashscreen.this,
                            MainActivity.class);
                    intent.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
                    startActivity(intent);
                    splashscreen.this.finish();
                } catch (InterruptedException e) {
                    // do nothing
                } finally {
                    splashscreen.this.finish();
                }

            }
        };
        splashTread.start();

    }

}

据我所知，这花费了很多时间:(……我只是好奇如何加载像 facebook 这样的应用程序，当我们点击 fb 图标时，应用程序加载速度非常快并且会启动显示了屏幕，但在我的应用程序中我遇到了这个问题。任何帮助将不胜感激:) ..

这里是我的 androidmanifest

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

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/Theme.AppCompat.Light.NoActionBar">
        <activity android:name=".splashscreen"
            android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name=".MainActivity">
        </activity>
        <activity
            android:name=".ShowPosts"
            android:label="@string/posttitle"
            android:parentActivityName=".MainActivity"/>
        <activity android:name=".LiveScores" />
    </application>

我刚刚将启动屏幕作为主要 Activity ，因为我想快速加载我的应用程序，以便启动屏幕需要时间，然后我的主要 Activity 有一些时间来工作和加载

Answer 1

您可以在这里阅读更多内容: Add splash in application

如果您还想在屏幕之间创建动画，请参阅 Activity 之间的转换:

transitions between activities