java - 安卓启动画面

Question

我的包资源管理器

这就是我的包资源管理器中的内容，所以让我们从顶部开始，解决我认为它所在的问题。

MainActivity.java -

 package com.drg.idoser;

 import android.os.Bundle;
 import android.app.Activity;
 import android.view.Menu;

 public class MainActivity extends Activity {

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

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

}

现在 SplashActivity.java

package com.drg.idoser;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.Window;
import android.view.WindowManager;

public class SplashActivity extends Activity {

 private static String TAG = SplashActivity.class.getName();
 private static long SLEEP_TIME = 5;    // Sleep for some time

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);

  this.requestWindowFeature(Window.FEATURE_NO_TITLE);    // Removes title bar
  this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,     WindowManager.LayoutParams.FLAG_FULLSCREEN);    // Removes notification bar

  setContentView(R.layout.splash);

  // Start timer and launch main activity
  IntentLauncher launcher = new IntentLauncher();
  launcher.start();
}

 private class IntentLauncher extends Thread {
  @Override
  /**
   * Sleep for some time and than start new activity.
   */
  public void run() {
     try {
        // Sleeping
        Thread.sleep(SLEEP_TIME*1000);
     } catch (Exception e) {
        Log.e(TAG, e.getMessage());
     }

     // Start main activity
     Intent intent = new Intent(SplashActivity.this, MainActivity.class);
     SplashActivity.this.startActivity(intent);
     SplashActivity.this.finish();
  }
}
}

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/hello_world" />

</RelativeLayout>

飞溅.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:background="@drawable/splash_bg"
android:layout_height="match_parent"
android:orientation="vertical" >


</LinearLayout>

AndroidManafest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.drg.idoser"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.drg.idoser.MainActivity"
        android:label="@string/app_name" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

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

</manifest>

现在我认为我的问题出在AndroidManafest.xml我不认为我在AndroidManafest.xml中设置了启动屏幕，当我从手机启动我的应用程序时，它会跳转到activity_main.xml而不是splash.xml我是 android 应用程序的新手所以我似乎找不到我的问题，但如果有人有 TeamViwer，我需要我的启动屏幕显示 5 秒钟，并且如果它会更快，我想帮助我发布我的会话信息。

score 25 · Accepted Answer

将您的<application>标签更改为以下内容。您没有声明 SplashActivity，并将 MainActivity 设置为启动器 Activity。

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
        android:name="com.drg.idoser.SplashActivity"
        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="com.drg.idoser.MainActivity"
        android:label="@string/app_name" />
</application>

score 2 · Accepted Answer

每次启动应用程序时都会显示启动画面的最佳方法是创建一个新活动。

public class SplashScreen extends Activity {

private Handler mHandler;

private Runnable myRunnable;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    // Just create simple XML layout with i.e a single ImageView or a custom layout
    setContentView(R.layout.splash_screen_layout);
    mHandler = new Handler();
    myRunnable = new Runnable() {
        @Override
        public void run() {
            Intent intent = new Intent(SplashScreen.this, MainActivity.class);
            startActivity(intent);
            finish();
        }
    };

}

@Override
public void onBackPressed() {
// Remove callback on back press
    if (mHandler != null && myRunnable != null) {
        mHandler.removeCallbacks(myRunnable);
    }
    super.onBackPressed();
}

@Override
protected void onPause() {
// Remove callback on pause
    if (mHandler != null && myRunnable != null) {
        mHandler.removeCallbacks(myRunnable);
    }
    super.onPause();
}

@Override
protected void onResume() {
// Attach and start callback with delay on resume
    if (mHandler != null && myRunnable != null) {
        mHandler.postDelayed(myRunnable, ConstantValues.SPLASH_TIME_OUT);
    }
    super.onResume();
}
}

score 1 · Accepted Answer

您可以像这样轻松访问启动画面。如

public class MainActivity extends Activity {
    private ImageView splashImageView;
    private boolean splashloading = false;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        splashImageView = new ImageView(this);
        splashImageView.setScaleType(ScaleType.FIT_XY);
        splashImageView.setImageResource(R.drawable.ic_launcher);
        setContentView(splashImageView);
        splashloading = true;
        Handler h = new Handler();
        h.postDelayed(new Runnable() {
            public void run() {
                splashloading = false;
                // set your layout file in below
                setContentView(R.layout.activity_main);
            }
        }, 3000);

    }
}

这将是 100% 的作品。

score 1 · Accepted Answer

这是一个简单的！

~Lunox

MainActivity.java

import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

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

闪屏.java

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;

public class splashscreen extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.splashscreen);

        //Splash Screen duration
        int secondsDelayed = 1;
        new Handler().postDelayed(new Runnable() {
            public void run() {
                startActivity(new Intent(splashscreen.this, MainActivity.class));
                finish();
            }
        }, secondsDelayed * 3000);
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

闪屏.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/splashlogo"

    />

飞溅标志.png

飞溅标志.png

GitHub

闪屏

score -1 · Accepted Answer

@Override

   protected void onCreate(Bundle savedInstanceState) {

          super.onCreate(savedInstanceState);

          setContentView(R.layout.activity_main);

          Thread th = new Thread(new Runnable() {            /*create a new thread */

                              @Override

                              public void run() { /*

                                                                  * The purpose of this thread is to

                                                                  * navigate from one class to another

                                                                  * after some time

                                                                  */

                                     try {

                                            Thread.sleep(5000);

                                     } catch (InterruptedException e) {

                                            /*

                                             * We are creating this new thread because we don’t

                                             * want our main thread to stop working for that

                                             * time as our android stop working and some time

                                             * application will crashes

                                             */

                                            e.printStackTrace();

                                     }

                                     finally {

                                            Intent i = new Intent(MainActivity.this,

                                                          Splash_Class.class);

                                            startActivity(i);

                                            finish();

                                     }

                              }

                       });

          th.start(); // start the thread

   }

http://www.codehubb.com/android_splash_screen

java - 安卓启动画面

5 回答 5

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