android - 为什么 Picasso 花时间在 ImageView 中显示图像？

Question

我正在为我的应用程序使用 Picasso。它工作正常但需要太多时间将图像显示到 ImageView 中。谁能告诉我原因是什么以及如何解决？

我正在使用这段代码:

Picasso.with(image.getContext())
                        .load(imageIds[currentIndex])
                        .transform(new BitmapTransform(MAX_WIDTH, MAX_HEIGHT))
                        .skipMemoryCache()
                        .resize(size, size)
                        .centerInside()
                        .into(image);

其中 MAX_WIDTH 和 MAX_HEIGHT 声明为:

    private static final int MAX_WIDTH = 1000;
    private static final int MAX_HEIGHT = 700;

代码是:

    public class BitmapTransform implements Transformation {

        int maxWidth;
        int maxHeight;

        public BitmapTransform(int maxWidth, int maxHeight) {
            this.maxWidth = maxWidth;
            this.maxHeight = maxHeight;
        }

        @Override
        public Bitmap transform(Bitmap source) {
            int targetWidth, targetHeight;
            double aspectRatio;

            if (source.getWidth() > source.getHeight()) {
                targetWidth = maxWidth;
                aspectRatio = (double) source.getHeight() / (double) source.getWidth();
                targetHeight = (int) (targetWidth * aspectRatio);
            } else {
                targetHeight = maxHeight;
                aspectRatio = (double) source.getWidth() / (double) source.getHeight();
                targetWidth = (int) (targetHeight * aspectRatio);
            }

            Bitmap result = Bitmap.createScaledBitmap(source, targetWidth, targetHeight, false);
            if (result != source) {
                source.recycle();
            }
            return result;
        }

        @Override
        public String key() {
            return maxWidth + "x" + maxHeight;
        }

    };

添加 setLoggingEnabled(true) 后日志如下:由于这里的字数限制，无法显示完整的日志。

08-12 05:20:52.270      383-406/system_process W/ActivityManager﹕ No content provider found for permission revoke: file:///data/local/tmp/com.kidooz.kidooz_abcfun
08-12 05:20:56.670      383-406/system_process W/ActivityManager﹕ No content provider found for permission revoke: file:///data/local/tmp/com.kidooz.kidooz_abcfun
08-12 05:21:04.650      383-398/system_process I/ActivityManager﹕ Force stopping com.kidooz.kidooz_abcfun appid=10055 user=-1: uninstall pkg
08-12 05:21:04.950      383-406/system_process I/PackageManager﹕ Package com.kidooz.kidooz_abcfun codePath changed from /data/app/com.kidooz.kidooz_abcfun-2.apk to /data/app/com.kidooz.kidooz_abcfun-1.apk; Retaining data and using new
08-12 05:21:04.980      383-406/system_process I/PackageManager﹕ Running dexopt on: com.kidooz.kidooz_abcfun
08-12 05:21:08.270      383-406/system_process W/PackageManager﹕ Code path for pkg : com.kidooz.kidooz_abcfun changing from /data/app/com.kidooz.kidooz_abcfun-2.apk to /data/app/com.kidooz.kidooz_abcfun-1.apk
08-12 05:21:08.270      383-406/system_process W/PackageManager﹕ Resource path for pkg : com.kidooz.kidooz_abcfun changing from /data/app/com.kidooz.kidooz_abcfun-2.apk to /data/app/com.kidooz.kidooz_abcfun-1.apk
08-12 05:21:08.310      383-398/system_process I/ActivityManager﹕ Force stopping com.kidooz.kidooz_abcfun appid=10055 user=-1: update pkg
08-12 05:21:08.850      383-406/system_process I/ActivityManager﹕ Force stopping com.kidooz.kidooz_abcfun appid=10055 user=0: pkg removed
08-12 05:21:09.450      383-383/system_process D/BackupManagerService﹕ Received broadcast Intent { act=android.intent.action.PACKAGE_REMOVED dat=package:com.kidooz.kidooz_abcfun flg=0x4000010 (has extras) }
08-12 05:21:09.800      383-383/system_process D/BackupManagerService﹕ Received broadcast Intent { act=android.intent.action.PACKAGE_ADDED dat=package:com.kidooz.kidooz_abcfun flg=0x4000010 (has extras) }
08-12 05:21:17.090      383-620/system_process I/ActivityManager﹕ START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.kidooz.kidooz_abcfun/.logo} from pid 882
08-12 05:21:17.700      383-565/system_process I/ActivityManager﹕ Start proc com.kidooz.kidooz_abcfun for activity com.kidooz.kidooz_abcfun/.logo: pid=892 uid=10055 gids={50055}
08-12 05:21:20.370      892-892/com.kidooz.kidooz_abcfun W/Settings﹕ Setting airplane_mode_on has moved from android.provider.Settings.System to android.provider.Settings.Global, returning read-only value.
08-12 05:21:20.580      892-892/com.kidooz.kidooz_abcfun E/MediaPlayer﹕ Should have subtitle controller already set
08-12 05:21:20.830      892-892/com.kidooz.kidooz_abcfun D/﹕ HostConnection::get() New Host Connection established 0xb7f45bb0, tid 892
08-12 05:21:21.390      892-892/com.kidooz.kidooz_abcfun W/EGL_emulation﹕ eglSurfaceAttrib not implemented
08-12 05:21:21.490      892-892/com.kidooz.kidooz_abcfun D/OpenGLRenderer﹕ Enabling debug mode 0
08-12 05:21:23.520      383-397/system_process I/ActivityManager﹕ Displayed com.kidooz.kidooz_abcfun/.logo: +6s87ms
08-12 05:21:23.600      383-620/system_process I/ActivityManager﹕ START u0 {cmp=com.kidooz.kidooz_abcfun/.Main} from pid 892
08-12 05:21:24.900      892-892/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 125K, 7% free 3195K/3404K, paused 81ms, total 95ms
08-12 05:21:25.020      892-892/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 10.050MB for 7200016-byte allocation
08-12 05:21:25.180      892-901/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 4K, 3% free 10221K/10436K, paused 150ms, total 150ms
08-12 05:21:26.070      892-892/com.kidooz.kidooz_abcfun E/MediaPlayer﹕ Should have subtitle controller already set
08-12 05:21:26.520      892-892/com.kidooz.kidooz_abcfun W/EGL_emulation﹕ eglSurfaceAttrib not implemented
08-12 05:21:29.120      383-397/system_process W/WindowManager﹕ This window was lost: Window{b404c400 u0 com.kidooz.kidooz_abcfun/com.kidooz.kidooz_abcfun.logo}
08-12 05:21:29.120      383-397/system_process W/WindowManager﹕ mDisplayId=0 mSession=Session{b4008bc8 892:u0a10055} mClient=android.os.BinderProxy@b4004d38
    mOwnerUid=10055 mShowToOwnerOnly=true package=com.kidooz.kidooz_abcfun appop=NONE
    mAttrs=WM.LayoutParams{(0,0)(fillxfill) sim=#120 ty=1 fl=#1810100 pfl=0x8 wanim=0x1030001}
    Requested w=1200 h=1824 mLayoutSeq=56
    mBaseLayer=21000 mSubLayer=0 mAnimLayer=21005+0=21005 mLastLayer=21010
    mToken=AppWindowToken{b40f75e8 token=Token{b3fa80a8 ActivityRecord{b4022c80 u0 com.kidooz.kidooz_abcfun/.logo t2}}}
    mRootToken=AppWindowToken{b40f75e8 token=Token{b3fa80a8 ActivityRecord{b4022c80 u0 com.kidooz.kidooz_abcfun/.logo t2}}}
    mAppToken=AppWindowToken{b40f75e8 token=Token{b3fa80a8 ActivityRecord{b4022c80 u0 com.kidooz.kidooz_abcfun/.logo t2}}}
    mViewVisibility=0x0 mHaveFrame=true mObscured=false
    mSeq=0 mSystemUiVisibility=0x0
    mGivenContentInsets=[0,0][0,0] mGivenVisibleInsets=[0,0][0,0]
    mConfiguration={1.0 310mcc260mnc en_US ldltr sw600dp w600dp h887dp 320dpi lrg port finger qwerty/v/v -nav/h s.5}
    mHasSurface=true mShownFrame=[0.0,0.0][1200.0,1824.0] isReadyForDisplay()=false
    mFrame=[0,0][1200,1824] last=[0,0][1200,1824]
    mSystemDecorRect=[0,50][1200,1824] last=[0,50][1200,1824]
    Frames: containing=[0,0][1200,1824] parent=[0,0][1200,1824]
    display=[0,0][1200,1824] overscan=[0,0][1200,1920]
    content=[0,50][1200,1824] visible=[0,50][1200,1824]
    decor=[0,50][1200,1824]
    Cur insets: overscan=[0,0][0,0] content=[0,50][0,0] visible=[0,50][0,0]
    Lst insets: overscan=[0,0][0,0] content=[0,50][0,0] visible=[0,50][0,0]
    WindowStateAnimator{b40e85e0 com.kidooz.kidooz_abcfun/com.kidooz.kidooz_abcfun.logo}:
    mSurface=Surface(name=com.kidooz.kidooz_abcfun/com.kidooz.kidooz_abcfun.logo)
    mDrawState=HAS_DRAWN mLastHidden=true
    Surface: shown=false layer=21010 alpha=1.0 rect=(0.0,0.0) 1200.0 x 1824.0
    mGlobalScale=1.0 mDsDx=1.0 mDtDx=0.0 mDsDy=0.0 mDtDy=1.0
    mExiting=false mRemoveOnExit=false mDestroying=true mRemoved=false
08-12 05:21:29.180      383-397/system_process V/WindowManager﹕ #1: Token{b4008718 ActivityRecord{b40f9f48 u0 com.kidooz.kidooz_abcfun/.Main t2}}
08-12 05:21:29.180      383-397/system_process V/WindowManager﹕ #5: Window{b40909f8 u0 com.kidooz.kidooz_abcfun/com.kidooz.kidooz_abcfun.Main}
08-12 05:21:30.620      383-397/system_process I/ActivityManager﹕ Displayed com.kidooz.kidooz_abcfun/.Main: +6s697ms
08-12 05:21:30.870      892-912/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 7K, 2% free 12020K/12196K, paused 52ms, total 61ms
08-12 05:21:35.300      383-656/system_process I/ActivityManager﹕ START u0 {act=com.kidooz.kidooz_abcfun.AA cmp=com.kidooz.kidooz_abcfun/.aa} from pid 892
08-12 05:21:36.190      892-892/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 2138K, 19% free 10318K/12588K, paused 73ms, total 86ms
08-12 05:21:36.340      892-892/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 14.140MB for 4194320-byte allocation
08-12 05:21:36.460      892-901/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 1K, 14% free 14413K/16688K, paused 117ms, total 117ms
08-12 05:21:37.760      892-892/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 1K, 14% free 14413K/16688K, paused 86ms, total 87ms
08-12 05:21:37.920      892-892/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 18.139MB for 4194320-byte allocation
08-12 05:21:38.020      892-901/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 11% free 18509K/20788K, paused 103ms, total 103ms
08-12 05:21:39.390      892-892/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 11% free 18510K/20788K, paused 100ms, total 103ms
08-12 05:21:39.540      892-892/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 22.140MB for 4194320-byte allocation
08-12 05:21:40.250      892-892/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 10% free 22606K/24888K, paused 91ms, total 92ms
08-12 05:21:40.280      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  enqueued     [R1]+5ms
08-12 05:21:40.290      892-917/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      executing    [R1]+18ms
08-12 05:21:40.990      892-892/com.kidooz.kidooz_abcfun W/EGL_emulation﹕ eglSurfaceAttrib not implemented
08-12 05:21:44.180      892-917/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 43K, 10% free 22591K/24888K, paused 125ms, total 126ms
08-12 05:21:44.380      892-917/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 26.125MB for 4194320-byte allocation
08-12 05:21:44.470      383-397/system_process I/ActivityManager﹕ Displayed com.kidooz.kidooz_abcfun/.aa: +9s74ms
08-12 05:21:44.570      892-892/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 26686K/28988K, paused 115ms, total 118ms
08-12 05:21:45.120      892-917/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      decoded      [R1]+4847ms
08-12 05:21:45.130      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  batched      [R1]+4851ms for completion
08-12 05:21:45.340      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  delivered    [R1]+5s
08-12 05:21:45.350      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        completed    [R1]+5s from DISK
08-12 05:21:46.490      892-892/com.kidooz.kidooz_abcfun I/Choreographer﹕ Skipped 66 frames!  The application may be doing too much work on its main thread.
08-12 05:21:49.410      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        created      [R2] Request{2130837592 1000x700 resize(837,837) centerInside}
08-12 05:21:50.050      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  enqueued     [R2]+678ms
08-12 05:21:50.380      892-968/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      executing    [R2]+1006ms
08-12 05:21:51.620      892-968/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 4109K, 10% free 22597K/24852K, paused 70ms, total 72ms
08-12 05:21:51.670      892-968/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 26.130MB for 4194320-byte allocation
08-12 05:21:52.110      892-968/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 26692K/28952K, paused 64ms, total 64ms
08-12 05:21:52.110      892-968/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      decoded      [R2]+2737ms
08-12 05:21:52.190      892-968/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 1K, 8% free 26692K/28952K, paused 70ms, total 70ms
08-12 05:21:52.220      892-968/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 28.803MB for 2802292-byte allocation
08-12 05:21:52.300      892-968/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 29429K/31692K, paused 73ms, total 73ms
08-12 05:21:52.530      892-968/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R2]+3155ms
08-12 05:21:52.580      892-968/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R2]+3206ms from custom transformations
08-12 05:21:52.590      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  batched      [R2]+3209ms for completion
08-12 05:21:52.800      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        completed    [R2]+3418ms from DISK
08-12 05:21:52.830      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  delivered    [R2]+3453ms
08-12 05:21:53.360      892-892/com.kidooz.kidooz_abcfun I/Choreographer﹕ Skipped 31 frames!  The application may be doing too much work on its main thread.
08-12 05:21:55.170      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        created      [R3] Request{2130837594 1000x700 resize(837,837) centerInside}
08-12 05:21:55.210      892-912/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      executing    [R3]+23ms
08-12 05:21:55.360      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  enqueued     [R3]+16ms
08-12 05:21:56.190      892-912/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 8760K, 10% free 22598K/24852K, paused 95ms, total 106ms
08-12 05:21:56.310      892-912/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 26.132MB for 4194320-byte allocation
08-12 05:21:56.950      892-912/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 26694K/28952K, paused 70ms, total 70ms
08-12 05:21:56.950      892-912/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      decoded      [R3]+1782ms
08-12 05:21:57.030      892-912/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 1K, 8% free 26694K/28952K, paused 74ms, total 75ms
08-12 05:21:57.070      892-912/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 28.804MB for 2802292-byte allocation
08-12 05:21:57.140      892-912/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 29430K/31692K, paused 73ms, total 73ms
08-12 05:21:57.380      892-912/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R3]+2205ms
08-12 05:21:57.430      892-912/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R3]+2253ms from custom transformations
08-12 05:21:57.430      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  batched      [R3]+2258ms for completion
08-12 05:21:57.810      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        completed    [R3]+2640ms from DISK
08-12 05:21:57.970      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  delivered    [R3]+2648ms
08-12 05:21:58.370      892-892/com.kidooz.kidooz_abcfun I/Choreographer﹕ Skipped 30 frames!  The application may be doing too much work on its main thread.
08-12 05:22:00.430      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        created      [R4] Request{2130837601 1000x700 resize(837,837) centerInside}
08-12 05:22:00.460      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  enqueued     [R4]+16ms
08-12 05:22:00.640      892-917/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      executing    [R4]+212ms
08-12 05:22:02.190      892-917/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 8760K, 10% free 22599K/24852K, paused 96ms, total 103ms
08-12 05:22:02.290      892-917/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 26.133MB for 4194320-byte allocation
08-12 05:22:04.520      892-917/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 26694K/28952K, paused 78ms, total 90ms
08-12 05:22:04.520      892-917/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      decoded      [R4]+4097ms
08-12 05:22:04.660      892-917/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 1K, 8% free 26694K/28952K, paused 99ms, total 101ms
08-12 05:22:04.920      892-917/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 28.805MB for 2802292-byte allocation
08-12 05:22:05.030      892-917/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 29431K/31692K, paused 100ms, total 112ms
08-12 05:22:06.080      892-917/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R4]+5s
08-12 05:22:06.230      892-917/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R4]+5s from custom transformations
08-12 05:22:06.290      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  batched      [R4]+5s for completion
08-12 05:22:06.440      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  delivered    [R4]+6s
08-12 05:22:06.450      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        completed    [R4]+6s from DISK
08-12 05:22:07.010      892-892/com.kidooz.kidooz_abcfun I/Choreographer﹕ Skipped 30 frames!  The application may be doing too much work on its main thread.
08-12 05:22:11.474      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        created      [R5] Request{2130837604 1000x700 resize(837,837) centerInside}
08-12 05:22:11.814      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  enqueued     [R5]+257ms
08-12 05:22:11.824      892-968/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      executing    [R5]+277ms
08-12 05:22:12.994      892-968/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 8760K, 10% free 22599K/24852K, paused 74ms, total 74ms
08-12 05:22:13.044      892-968/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 26.133MB for 4194320-byte allocation
08-12 05:22:13.474      892-968/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 26694K/28952K, paused 63ms, total 63ms
08-12 05:22:13.474      892-968/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      decoded      [R5]+2000ms
08-12 05:22:13.554      892-968/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 1K, 8% free 26695K/28952K, paused 68ms, total 68ms
08-12 05:22:13.584      892-968/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 28.805MB for 2802292-byte allocation
08-12 05:22:13.664      892-968/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 29431K/31692K, paused 73ms, total 74ms
08-12 05:22:13.894      892-968/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R5]+2422ms
08-12 05:22:13.944      892-968/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R5]+2471ms from custom transformations
08-12 05:22:13.954      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  batched      [R5]+2474ms for completion
08-12 05:22:14.164      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        completed    [R5]+2690ms from DISK
08-12 05:22:14.414      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  delivered    [R5]+2936ms
08-12 05:22:14.744      892-892/com.kidooz.kidooz_abcfun I/Choreographer﹕ Skipped 32 frames!  The application may be doing too much work on its main thread.
08-12 05:22:15.814      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        created      [R6] Request{2130837606 1000x700 resize(837,837) centerInside}
08-12 05:22:15.824      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  enqueued     [R6]+27ms
08-12 05:22:15.824      892-912/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      executing    [R6]+31ms
08-12 05:22:16.524      892-912/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 8760K, 10% free 22599K/24852K, paused 73ms, total 74ms
08-12 05:22:16.574      892-912/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 26.133MB for 4194320-byte allocation
08-12 05:22:17.014      892-912/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 26695K/28952K, paused 62ms, total 63ms
08-12 05:22:17.014      892-912/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      decoded      [R6]+1220ms
08-12 05:22:17.084      892-912/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 1K, 8% free 26695K/28952K, paused 67ms, total 68ms
08-12 05:22:17.124      892-912/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 28.805MB for 2802292-byte allocation
08-12 05:22:17.194      892-901/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 0K, 8% free 29431K/31692K, paused 75ms, total 75ms
08-12 05:22:17.444      892-912/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R6]+1646ms
08-12 05:22:17.504      892-912/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R6]+1706ms from custom transformations
08-12 05:22:17.514      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  batched      [R6]+1710ms for completion
08-12 05:22:17.744      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  delivered    [R6]+1922ms
08-12 05:22:17.754      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        completed    [R6]+1917ms from DISK
08-12 05:22:18.334      892-892/com.kidooz.kidooz_abcfun I/Choreographer﹕ Skipped 32 frames!  The application may be doing too much work on its main thread.
08-12 05:22:19.574      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        created      [R7] Request{2130837607 1000x700 resize(837,837) centerInside}
08-12 05:22:19.584      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  enqueued     [R7]+94ms
08-12 05:22:19.754      892-917/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      executing    [R7]+100ms
08-12 05:22:20.224      892-917/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 8760K, 10% free 22600K/24852K, paused 76ms, total 76ms
08-12 05:22:20.274      892-917/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 26.133MB for 4194320-byte allocation
08-12 05:22:20.344      892-901/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 26695K/28952K, paused 70ms, total 70ms
08-12 05:22:21.004      892-917/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      decoded      [R7]+1507ms
08-12 05:22:21.074      892-917/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 1K, 8% free 26695K/28952K, paused 69ms, total 70ms
08-12 05:22:21.104      892-917/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 28.805MB for 2802292-byte allocation
08-12 05:22:21.174      892-901/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 29432K/31692K, paused 72ms, total 72ms
08-12 05:22:21.424      892-917/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R7]+1931ms
08-12 05:22:21.474      892-917/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R7]+1982ms from custom transformations
08-12 05:22:21.474      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  batched      [R7]+1986ms for completion
08-12 05:22:21.684      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        completed    [R7]+2195ms from DISK
08-12 05:22:21.714      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  delivered    [R7]+2202ms
08-12 05:22:24.014      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        created      [R8] Request{2130837609 1000x700 resize(837,837) centerInside}
08-12 05:22:24.024      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  enqueued     [R8]+29ms
08-12 05:22:24.024      892-968/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      executing    [R8]+35ms
08-12 05:22:24.694      892-968/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 8759K, 10% free 22600K/24852K, paused 85ms, total 85ms
08-12 05:22:24.744      892-968/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 26.134MB for 4194320-byte allocation
08-12 05:22:25.244      892-968/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 26695K/28952K, paused 64ms, total 65ms
08-12 05:22:25.244      892-968/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      decoded      [R8]+1252ms
08-12 05:22:25.314      892-968/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 1K, 8% free 26695K/28952K, paused 68ms, total 68ms
08-12 05:22:25.354      892-968/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 28.806MB for 2802292-byte allocation
08-12 05:22:25.434      892-901/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 29432K/31692K, paused 75ms, total 75ms
08-12 05:22:25.684      892-968/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R8]+1689ms
08-12 05:22:25.734      892-968/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R8]+1736ms from custom transformations
08-12 05:22:25.734      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  batched      [R8]+1741ms for completion
08-12 05:22:25.944      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  delivered    [R8]+1945ms
08-12 05:22:25.974      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        completed    [R8]+1963ms from DISK
08-12 05:22:28.804      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        created      [R9] Request{2130837611 1000x700 resize(837,837) centerInside}
08-12 05:22:28.954      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  enqueued     [R9]+13ms
08-12 05:22:28.974      892-912/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      executing    [R9]+154ms
08-12 05:22:29.414      892-912/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 8759K, 10% free 22600K/24852K, paused 74ms, total 75ms
08-12 05:22:29.464      892-912/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 26.134MB for 4194320-byte allocation
08-12 05:22:29.534      892-901/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 26696K/28952K, paused 76ms, total 76ms
08-12 05:22:29.904      892-912/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      decoded      [R9]+1101ms
08-12 05:22:29.974      892-912/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed 2K, 8% free 26695K/28952K, paused 69ms, total 70ms
08-12 05:22:30.004      892-912/com.kidooz.kidooz_abcfun I/dalvikvm-heap﹕ Grow heap (frag case) to 28.806MB for 2802292-byte allocation
08-12 05:22:30.084      892-901/com.kidooz.kidooz_abcfun D/dalvikvm﹕ GC_FOR_ALLOC freed <1K, 8% free 29432K/31692K, paused 73ms, total 73ms
08-12 05:22:30.314      892-912/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R9]+1519ms
08-12 05:22:30.364      892-912/com.kidooz.kidooz_abcfun D/Picasso﹕ Hunter      transformed  [R9]+1567ms from custom transformations
08-12 05:22:30.364      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  batched      [R9]+1571ms for completion
08-12 05:22:30.584      892-892/com.kidooz.kidooz_abcfun D/Picasso﹕ Main        completed    [R9]+1780ms from DISK
08-12 05:22:30.774      892-910/com.kidooz.kidooz_abcfun D/Picasso﹕ Dispatcher  delivered    [R9]+1773ms

Answer 1

好的，我将逐行解释昂贵的操作:

.load(imageIds[currentIndex])

如上所述，这将从 Internet 或文件系统加载图像。在第一种情况下，下载时间取决于图像大小和 Internet 连接质量。在第二种情况下，它仅取决于图像大小，但请记住，磁盘操作也很耗费性能。

.transform(new BitmapTransform(MAX_WIDTH, MAX_HEIGHT))

在这里，您正在对新位图应用转换，需要分配额外的内存来创建缩放位图。

.resize(size, size)  

这里您再次调整图像大小 - 我不熟悉 Picasso 的 resize 实现，但我相信它也需要额外的内存。其实你为什么调整图像大小两次？也许您应该考虑如何在一个转换中组合两个调整大小操作。

其他东西对性能没有严重影响。

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