怎么让这个动画和背景换色同步

Question

animationswitchthread

Answer 1

把动画放到handler里，发消息执行它。
不要在线程里对ui进行操作。

Answer 2

layout.setBackgroundColor(R.color.red);应该也有问题，同动画，ui不能在线程修改。

Answer 3

稍微改下loading和handler应该就可以了   private void loading() {
        Runnable r = new Runnable() {
            public void run() {
                try {
                    Timer timer = new Timer();
                    TimerTask task=new TimerTask() {
                        @Override
                        public void run() {
                            switch ((int) time / 1000) {
                            case 1:
                            case 2:
                            case 3:
                            case 4:
                              mHandler.sendEmptyMessage((int) time / 1000);
                            default:
                                break;
                            }
                            time+=1000l;
                        }
                    };
                    if(time<10000l){
                        timer.schedule(task, 1000);
                    }else{
                        mHandler.sendEmptyMessage(-1);
                    }
                    //Thread.sleep(10000);
                } catch (Exception e) {
                    // Log.e(TAG, e.toString());
                }
            }
        };
        new Thread(r).start();
    }
 
    private class MessageHandler extends Handler {
 
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
            case -1:
                Intent intent = new Intent(WelcomeActivity.this,
                        MainActivity.class);
                intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                startActivity(intent);
                finish();
                break;
            case 1:
                layout.setBackgroundColor(R.color.red);
                ObjectAnimator.ofFloat(progressImage, "rotation", 0f, 360f).setDuration(1000).start();
                break;
            case 2:
                layout.setBackgroundColor(R.color.brown);
                ObjectAnimator.ofFloat(progressImage, "rotation", 0f, 360f).setDuration(1000).start();
                break;
            case 3:
                layout.setBackgroundColor(R.color.yellow);
                ObjectAnimator.ofFloat(progressImage, "rotation", 0f, 360f).setDuration(1000).start();
                break;
            case 4:
                layout.setBackgroundColor(R.color.green);
                ObjectAnimator.ofFloat(progressImage, "rotation", 0f, 360f).setDuration(1000).start();
                break;
            default:
                super.handleMessage(msg);
            }
        }
    }

Answer 4

private void loading()
{
Runnable r = new Runnable()
{
public void run()
{
try
{
final Timer timer = new Timer();
final TimerTask task = new TimerTask()
{
@Override
public void run()
{
while (time < 10000)
{// 10秒内
time += 1000;
switch ((int) time / 1000)
{
case 1:
//第一次因为time==0所以执行
ObjectAnimator.ofFloat(progressImage, "rotation", 0f, 360f).setDuration(10000).start();
break;
default:
mHandler.sendEmptyMessage((int) time / 1000);
break;
}

if (time < 10000l)
{
timer.schedule(task, 1000);
}
else
{
mHandler.sendEmptyMessage(-1);
}
}
}
};
}
catch (Exception e)
{
// Log.e(TAG, e.toString());
}
}
};
new Thread(r).start();
} private class MessageHandler extends Handler
{ @Override
public void handleMessage(Message msg)
{
switch (msg.what)
{
case -1:
Intent intent = new Intent(WelcomeActivity.this,
MainActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
finish();
break;
case 2:
layout.setBackgroundColor(R.color.red);
break;
case 3:
layout.setBackgroundColor(R.color.brown);
break;
case 4:
layout.setBackgroundColor(R.color.yellow);
break;
case 5:
layout.setBackgroundColor(R.color.green);
break;
//TODO:增加更多颜色6、7、8、9、10
default:
super.handleMessage(msg);
}
}
}

Answer 5

有while也是不行的...
12-29 08:03:45.525: E/AndroidRuntime(575): android.util.AndroidRuntimeException: Animators may only be run on Looper threads

Answer 6

有while也是不行的...
12-29 08:03:45.525: E/AndroidRuntime(575): android.util.AndroidRuntimeException: Animators may only be run on Looper threads
我少些了一个消息private void loading()
{
    Runnable r = new Runnable()
    {
        public void run()
        {
            try
            {
                final Timer timer = new Timer();
                final TimerTask task = new TimerTask()
                {
                    @Override
                    public void run()
                    {
                        while (time < 10000)
                        {// 10秒内
                            time += 1000;
                            switch ((int) time / 1000)
                            {
                            case 1:
                                //第一次因为time==1所以执行
                                mHandler.sendEmptyMessage(1);
                                break;
                            default:
                                mHandler.sendEmptyMessage((int) time / 1000);
                                break;
                            }
                             
                            if (time < 10000l)
                            {
                                timer.schedule(task, 1000);
                            }
                            else
                            {
                                mHandler.sendEmptyMessage(-1);
                            }
                        }
                    }
                };
            }
            catch (Exception e)
            {
                // Log.e(TAG, e.toString());
            }
        }
    };
    new Thread(r).start();
}
 
private class MessageHandler extends Handler
{
 
    @Override
    public void handleMessage(Message msg)
    {
        switch (msg.what)
        {
        case -1:
            Intent intent = new Intent(WelcomeActivity.this,
                    MainActivity.class);
            intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
            startActivity(intent);
            finish();
            break;
        case 1:
             ObjectAnimator.ofFloat(progressImage, "rotation", 0f, 360f).setDuration(10000).start();
        case 2:
            layout.setBackgroundColor(R.color.red);
            break;
        case 3:
            layout.setBackgroundColor(R.color.brown);
            break;
        case 4:
            layout.setBackgroundColor(R.color.yellow);
            break;
        case 5:
            layout.setBackgroundColor(R.color.green);
            break;
            //TODO:增加更多颜色6、7、8、9、10
        default:
            super.handleMessage(msg);
        }
    }
}
原因已经说过了……