闪屏淡入淡出动画问题

Question

我做了一个fade 动画，在初始屏幕中显示three images。我成功地得到了一个输出。

但我有一个two issue：

1. 加载时间：

   • 加载启动画面需要更多时间。它需要进入 尽快申请。

2. 应用无法关闭：

   • 进入应用程序后。我正在尝试借助模拟器中的后退按钮关闭这些应用程序。但它永远不会关闭
     申请。

   • 它停留在应用程序本身中。在日志猫中，我看到循环 1,2 和 3 一次又一次地继续。我无法关闭我的应用程序。

   • 如果我按下主页按钮，它会显示一个主页屏幕，但再次自动进入应用程序。

LogCat：

我没有收到任何 logcat 错误。但是您可以看到 logcat 读数始终在运行。它永远不会停止。循环 1,2 和 3 在 logcat 中连续读取。对于这些它永远不会关闭应用程序。然后如果我按home键，会显示主屏幕。但有时会自动进入这些应用程序。

06-25 05:46:27.654: V/test(1842): 1
06-25 05:46:27.684: V/test(1842): 2
06-25 05:46:31.764: V/test(1842): 1
06-25 05:46:35.654: V/test(1842): 2
06-25 05:46:35.684: V/test(1842): 3
06-25 05:46:39.764: V/test(1842): 2
06-25 05:46:43.654: V/test(1842): 3
06-25 05:46:43.684: V/test(1842): 1
06-25 05:46:44.914: I/Choreographer(1842): Skipped 36 frames!  The application may be doing too much work on its main thread.
06-25 05:46:46.524: I/ImageCache(1842): Memory cache created (size = 12288)
06-25 05:46:46.534: V/test1(1842): testhere
06-25 05:46:46.534: V/3333333(1842): 3333333
06-25 05:46:47.334: V/####(1842): TFH BANNER1
06-25 05:46:47.434: V/test2(1842): testhere
06-25 05:46:47.434: V/test3(1842): testhere
06-25 05:46:47.434: V/####(1842): TFH BANNER2
06-25 05:46:47.444: V/####(1842): TFH BANNER3
06-25 05:46:47.494: V/####(1842): TFH BANNER4
06-25 05:46:47.674: V/####(1842): TFH BANNER1
06-25 05:46:47.674: V/test2(1842): testhere
06-25 05:46:47.684: V/test3(1842): testhere
06-25 05:46:47.684: I/ImageWorker(1842): cancelPotentialWork - cancelled work for http://tfhapp.fathershouse.in/banner-gallery/tfh-banner1-large-1.jpg
06-25 05:46:47.684: V/####(1842): TFH BANNER2
06-25 05:46:47.684: V/####(1842): TFH BANNER3
06-25 05:46:47.684: V/####(1842): TFH BANNER4
06-25 05:46:47.764: V/test(1842): 3
06-25 05:46:47.864: V/APIServiceHandler(1842): API CALLhttp://tfhapp.fathershouse.in/api/video.php
06-25 05:46:47.864: I/ImageWorker(1842): doInBackground - starting work
06-25 05:46:48.004: V/####(1842): TFH BANNER1
06-25 05:46:48.004: V/test2(1842): testhere
06-25 05:46:48.014: V/test3(1842): testhere
06-25 05:46:48.014: V/####(1842): TFH BANNER2
06-25 05:46:48.024: V/####(1842): TFH BANNER3
06-25 05:46:48.024: V/####(1842): TFH BANNER4
06-25 05:46:48.034: V/####(1842): TFH BANNER1
06-25 05:46:48.044: V/test2(1842): testhere
06-25 05:46:48.044: V/test3(1842): testhere
06-25 05:46:48.064: V/####(1842): TFH BANNER2
06-25 05:46:48.144: V/####(1842): TFH BANNER3
06-25 05:46:48.274: I/Choreographer(1842): Skipped 1086 frames!  The application may be doing too much work on its main thread.
06-25 05:46:48.674: I/ImageCache(1842): Disk cache initialized
06-25 05:46:48.854: I/Choreographer(1842): Skipped 205 frames!  The application may be doing too much work on its main thread.
06-25 05:46:49.164: V/####(1842): TFH BANNER1
06-25 05:46:49.254: V/test2(1842): testhere
06-25 05:46:49.254: V/test3(1842): testhere
06-25 05:46:49.264: V/####(1842): TFH BANNER2
06-25 05:46:49.324: V/####(1842): TFH BANNER3
06-25 05:46:49.324: V/####(1842): TFH BANNER4
06-25 05:46:49.374: V/####(1842): TFH BANNER1
06-25 05:46:49.434: V/test2(1842): testhere
06-25 05:46:49.434: V/test3(1842): testhere
06-25 05:46:49.434: I/ImageWorker(1842): cancelPotentialWork - cancelled work for http://tfhapp.fathershouse.in/banner-gallery/tfh-banner1-large-1.jpg

下面我发布了我与 SplashActivity 相关的整个核心。

SplashActivity.java：

public class SplashActivity extends Activity {

    public int currentimageindex = 0;
    Timer timer;
    TimerTask task;
    ImageView slidingimage;
    int count = 0;
    private int[] IMAGE_IDS = { R.drawable.spl1, R.drawable.spl2,
            R.drawable.spl3 };

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_splash);
        final Handler mHandler = new Handler();

        // Create runnable for posting
        final Runnable mUpdateResults = new Runnable() {
            public void run() {

                AnimateandSlideShow();

            }
        };

        int delay = 1000; // delay for 1 sec.

        int period = 8000; // repeat every 4 sec.

        Timer timer = new Timer();

        timer.scheduleAtFixedRate(new TimerTask() {

            public void run() {

                mHandler.post(mUpdateResults);
                count = count + 1;

                Log.v("test", count + "");
                if (count >3) {

                    Intent i=new Intent(SplashActivity.this,HomeActivity.class);
                    startActivity(i);
                    count=0;  
                }
            }
        }, delay, period);

    }

    //
    // public void onClick(View v) {
    //
    // finish();
    // android.os.Process.killProcess(android.os.Process.myPid());
    // }

    /**
     * Helper method to start the animation on the splash screen
     */
    private void AnimateandSlideShow() {

        slidingimage = (ImageView) findViewById(R.id.ImageView3_Left);
        slidingimage.setImageResource(IMAGE_IDS[currentimageindex
                % IMAGE_IDS.length]);

        currentimageindex++;

        Animation rotateimage = AnimationUtils.loadAnimation(this,
                R.anim.custom_anim);

        slidingimage.startAnimation(rotateimage);

        // Log.v("test","animation slide");

    }

}  

layout_splash.xml：

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

    <ImageView
        android:id="@+id/ImageView3_Left"
          android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_vertical|center_horizontal" />


</LinearLayout>  

custom_anim.xml：

<?xml version="1.0" encoding="utf-8" ?>
<set
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false">
    <rotate
        android:fromDegrees="0"
        android:toDegrees="360"
        android:pivotX="50%"
        android:pivotY="50%"
        android:duration="2000" />
    <alpha
        android:fromAlpha="0.0"
        android:toAlpha="1.0"
        android:duration="2000">
    </alpha>
    <scale
        android:pivotX="50%"
        android:pivotY="50%"
        android:fromXScale=".1"
        android:fromYScale=".1"
        android:toXScale="1.0"
        android:toYScale="1.0"
        android:duration="2000" />

</set>

fade_in.xml：

<?xml version="1.0" encoding="utf-8" ?>
<set
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false">
    <alpha
        android:fromAlpha="0.0"
        android:toAlpha="1.0"
        android:duration="2500">
    </alpha>
</set>

fade_in2.xml：

<?xml version="1.0" encoding="utf-8" ?>
<set
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:shareInterpolator="false">
    <alpha
        android:fromAlpha="0.0"
        android:toAlpha="1.0"
        android:duration="2500"
        android:startOffset="2500">
    </alpha>
</set>

我不知道如何解决这些问题。如果您知道如何解决这些问题，任何人都可以帮助我。谢谢。

Answer 1

请参考此代码段以解决您的问题..

package com.example.splashanimation;

import java.util.Timer;
import java.util.TimerTask;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.ImageView;

public class MainActivity extends Activity {

    public int currentimageindex = 0;
    Timer timer;
    TimerTask task;
    ImageView slidingimage;
    int count = 0;
    private int[] IMAGE_IDS = { R.drawable.img1, R.drawable.img2, R.drawable.img3 };

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final Handler mHandler = new Handler();

        // Create runnable for posting
        final Runnable mUpdateResults = new Runnable() {
            public void run() {

                AnimateandSlideShow();

            }
        };

        int delay = 500; // delay for 1 sec.

        int period = 4000; // repeat every 4 sec.

        final Timer timer = new Timer();

        timer.scheduleAtFixedRate(new TimerTask() {

            public void run() {

                mHandler.post(mUpdateResults);
                count = count + 1;

                Log.v("test", count + "");
                if (count > 3) {
                    finish();
                    Intent i = new Intent(MainActivity.this, HomeActivity.class);
                    startActivity(i);
                    count = 0;
                    timer.cancel();
                }
            }
        }, 0, period);

    }

    /**
     * Helper method to start the animation on the splash screen
     */
    private void AnimateandSlideShow() {

        slidingimage = (ImageView) findViewById(R.id.ImageView3_Left);
        slidingimage.setImageResource(IMAGE_IDS[currentimageindex % IMAGE_IDS.length]);

        currentimageindex++;

        Animation rotateimage = AnimationUtils.loadAnimation(this, R.anim.custom_anim);

        slidingimage.startAnimation(rotateimage);

    }

}