当我从启动画面转到主要活动时，LeakCanary会显示以下内存泄漏。我知道这是由于Android操作系统本身的故障导致的预期泄漏，但有没有办法可以避免这种情况（通过在某处设置某些TextView的细节？）
D/LeakCanary﹕ * LEAK CAN BE IGNORED.
D/LeakCanary﹕ * com.gmspartnersltd.earthmiles.views.ActivitySignUp_ has leaked:
D/LeakCanary﹕ * GC ROOT static android.text.TextLine.sCached
D/LeakCanary﹕ * references array android.text.TextLine[].[1]
D/LeakCanary﹕ * references android.text.TextLine.mCharacterStyleSpanSet
D/LeakCanary﹕ * references android.text.SpanSet.spans
D/LeakCanary﹕ * references array android.text.style.CharacterStyle[].[1]
D/LeakCanary﹕ * references com.gmspartnersltd.earthmiles.views.ActivitySignUp$2.this$0 (anonymous class extends android.text.style.ClickableSpan)
D/LeakCanary﹕ * leaks com.gmspartnersltd.earthmiles.views.ActivitySignUp_ instance
D/LeakCanary﹕ [ 05-22 08:54:52.160 13969:18091 D/LeakCanary ]
* Reference Key: bb8124a9-2829-4ff3-8ded-13cf35f80f54
D/LeakCanary﹕ * Device: Genymotion generic Google Nexus 5 - 5.0.0 - API 21 - 1080x1920 vbox86p
D/LeakCanary﹕ * Android Version: 5.0 API: 21 LeakCanary: 1.3.1
D/LeakCanary﹕ * Durations: watch=10898ms, gc=137ms, heap dump=5529ms, analysis=9193ms
D/LeakCanary﹕ [ 05-22 08:54:52.160 13969:18091 D/LeakCanary ]
* Details:
D/LeakCanary﹕ * Class android.text.TextLine
D/LeakCanary﹕ | static $staticOverhead = byte[] [id=0x70622169;length=24;size=40]
D/LeakCanary﹕ | static sCached = android.text.TextLine[] [id=0x70775010;length=3]
D/LeakCanary﹕ | static DEBUG = false
D/LeakCanary﹕ | static TAB_INCREMENT = 20
D/LeakCanary﹕ * Array of android.text.TextLine[]
D/LeakCanary﹕ | [0] = android.text.TextLine [id=0x1309a2e0]
D/LeakCanary﹕ | [1] = android.text.TextLine [id=0x12eed650]
D/LeakCanary﹕ | [2] = null
D/LeakCanary﹕ * Instance of android.text.TextLine
D/LeakCanary﹕ | static $staticOverhead = byte[] [id=0x70622169;length=24;size=40]
D/LeakCanary﹕ | static sCached = android.text.TextLine[] [id=0x70775010;length=3]
D/LeakCanary﹕ | static DEBUG = false
D/LeakCanary﹕ | static TAB_INCREMENT = 20
D/LeakCanary﹕ | mCharacterStyleSpanSet = android.text.SpanSet [id=0x12e32d80]
D/LeakCanary﹕ | mChars = null
D/LeakCanary﹕ | mDirections = null
D/LeakCanary﹕ | mMetricAffectingSpanSpanSet = android.text.SpanSet [id=0x12e32d60]
D/LeakCanary﹕ | mPaint = null
D/LeakCanary﹕ | mReplacementSpanSpanSet = android.text.SpanSet [id=0x12e32da0]
D/LeakCanary﹕ | mSpanned = android.text.SpannedString [id=0x132dabe0]
D/LeakCanary﹕ | mTabs = null
D/LeakCanary﹕ | mText = null
D/LeakCanary﹕ | mWorkPaint = android.text.TextPaint [id=0x1300f5c0]
D/LeakCanary﹕ | mCharsValid = false
D/LeakCanary﹕ | mDir = 1
D/LeakCanary﹕ | mHasTabs = false
D/LeakCanary﹕ | mLen = 1
D/LeakCanary﹕ | mStart = 0
D/LeakCanary﹕ * Instance of android.text.SpanSet
D/LeakCanary﹕ | classType = java.lang.Class [id=0x703bb448;name=android.text.style.CharacterStyle]
D/LeakCanary﹕ | spanEnds = int[] [id=0x1309fd60;length=2;size=24]
D/LeakCanary﹕ | spanFlags = int[] [id=0x1309fda0;length=2;size=24]
D/LeakCanary﹕ | spanStarts = int[] [id=0x1309fd20;length=2;size=24]
D/LeakCanary﹕ | spans = android.text.style.CharacterStyle[] [id=0x1309fce0;length=2]
D/LeakCanary﹕ | numberOfSpans = 1
D/LeakCanary﹕ * Array of android.text.style.CharacterStyle[]
D/LeakCanary﹕ | [0] = null
D/LeakCanary﹕ | [1] = com.gmspartnersltd.earthmiles.views.ActivitySignUp$2 [id=0x130952c0]
D/LeakCanary﹕ * Instance of com.gmspartnersltd.earthmiles.views.ActivitySignUp$2
D/LeakCanary﹕ | this$0 = com.gmspartnersltd.earthmiles.views.ActivitySignUp_ [id=0x13361800]
D/LeakCanary﹕ * Instance of com.gmspartnersltd.earthmiles.views.ActivitySignUp_
D/LeakCanary﹕ | onViewChangedNotifier_ = org.androidannotations.api.view.OnViewChangedNotifier [id=0x13052dc0]
D/LeakCanary﹕ | birthday = null
D/LeakCanary﹕ | buttonNext = android.support.v7.widget.AppCompatButton [id=0x13459c00]
D/LeakCanary﹕ | confirmPassword = java.lang.String [id=0x132f01a0]
D/LeakCanary﹕ | editTextConformPassword = android.support.v7.widget.AppCompatEditText [id=0x13458400]
D/LeakCanary﹕ | editTextEmail = android.support.v7.widget.AppCompatEditText [id=0x1339b000]
D/LeakCanary﹕ | editTextFirstName = android.support.v7.widget.AppCompatEditText [id=0x13396c00]
D/LeakCanary﹕ | editTextLastName = android.support.v7.widget.AppCompatEditText [id=0x13398800]
D/LeakCanary﹕ | editTextPassword = android.support.v7.widget.AppCompatEditText [id=0x13456c00]
D/LeakCanary﹕ | email = java.lang.String [id=0x132f0040]
D/LeakCanary﹕ | facebook = com.facebook.android.Facebook [id=0x1307ee00]
D/LeakCanary﹕ | fbUserId = null
D/LeakCanary﹕ | firstName = java.lang.String [id=0x132f0080]
D/LeakCanary﹕ | gender = null
D/LeakCanary﹕ | lastName = java.lang.String [id=0x132f00e0]
D/LeakCanary﹕ | location = null
D/LeakCanary﹕ | mAsyncRunner = com.facebook.android.AsyncFacebookRunner [id=0x130952a0]
D/LeakCanary﹕ | password = java.lang.String [id=0x132f0140]
D/LeakCanary﹕ | termsOfUse = android.support.v7.widget.AppCompatTextView [id=0x1345a000]
D/LeakCanary﹕ | text = android.text.SpannableString [id=0x1310eaa0]
D/LeakCanary﹕ | fromFacebook = false
D/LeakCanary﹕ | etHelpMessage = null
D/LeakCanary﹕ | mProgressHUD = null
D/LeakCanary﹕ | positiveAction = null
D/LeakCanary﹕ | showBusyAnimationRequesterCount = 0
D/LeakCanary﹕ | mDelegate = android.support.v7.app.AppCompatDelegateImplV11 [id=0x12ecfd80]
D/LeakCanary﹕ | mAllLoaderManagers = android.support.v4.util.SimpleArrayMap [id=0x131d80a0]
D/LeakCanary﹕ | mContainer = android.support.v4.app.FragmentActivity$2 [id=0x13052db0]
D/LeakCanary﹕ | mFragments = android.support.v4.app.FragmentManagerImpl [id=0x12f7cf60]
D/LeakCanary﹕ | mHandler = android.support.v4.app.FragmentActivity$1 [id=0x1310ea80]
D/LeakCanary﹕ | mLoaderManager = null
D/LeakCanary﹕ | mCheckedForLoaderManager = true
D/LeakCanary﹕ | mCreated = true
D/LeakCanary﹕ | mLoadersStarted = false
D/LeakCanary﹕ | mOptionsMenuInvalidated = false
D/LeakCanary﹕ | mReallyStopped = true
D/LeakCanary﹕ | mResumed = false
D/LeakCanary﹕ | mRetaining = false
D/LeakCanary﹕ | mStopped = true
D/LeakCanary﹕ | mActionBar = null
D/LeakCanary﹕ | mActivityInfo = android.content.pm.ActivityInfo [id=0x12db0180]
D/LeakCanary﹕ | mActivityTransitionState = android.app.ActivityTransitionState [id=0x1304b600]
D/LeakCanary﹕ | mAllLoaderManagers = android.util.ArrayMap [id=0x131c9d00]
D/LeakCanary﹕ | mApplication = com.gmspartnersltd.earthmiles.globalstate.App [id=0x12c6e8c0]
D/LeakCanary﹕ | mComponent = android.content.ComponentName [id=0x12f64150]
D/LeakCanary﹕ | mContainer = android.app.Activity$1 [id=0x13052d70]
D/LeakCanary﹕ | mCurrentConfig = android.content.res.Configuration [id=0x12f97520]
D/LeakCanary﹕ | mDecor = null
D/LeakCanary﹕ | mDefaultKeySsb = null
D/LeakCanary﹕ | mEmbeddedID = null
D/LeakCanary﹕ | mEnterTransitionListener = android.app.SharedElementCallback$1 [id=0x70765ba8]
D/LeakCanary﹕ | mExitTransitionListener = android.app.SharedElementCallback$1 [id=0x70765ba8]
D/LeakCanary﹕ | mFragments = android.app.FragmentManagerImpl [id=0x12f7cef0]
D/LeakCanary﹕ | mHandler = android.os.Handler [id=0x1310ea60]
D/LeakCanary﹕ | mInstanceTracker = android.os.StrictMode$InstanceTracker [id=0x13052d90]
D/LeakCanary﹕ | mInstrumentation = android.app.Instrumentation [id=0x12c33f70]
D/LeakCanary﹕ | mIntent = android.content.Intent [id=0x12f3b300]
D/LeakCanary﹕ | mLastNonConfigurationInstances = null
D/LeakCanary﹕ | mLoaderManager = null
D/LeakCanary﹕ | mMainThread = android.app.ActivityThread [id=0x12c2b100]
D/LeakCanary﹕ | mManagedCursors = java.util.ArrayList [id=0x1310ea40]
D/LeakCanary﹕ | mManagedDialogs = null
D/LeakCanary﹕ | mMenuInflater = null
D/LeakCanary﹕ | mParent = null
D/LeakCanary﹕ | mResultData = null
D/LeakCanary﹕ | mSearchManager = null
D/LeakCanary﹕ | mTitle = java.lang.String [id=0x12e6d7e0]
D/LeakCanary﹕ | mToken = android.os.BinderProxy [id=0x12fe86a0]
D/LeakCanary﹕ | mTranslucentCallback = null
D/LeakCanary﹕ | mUiThread = java.lang.Thread [id=0x73b43540]
D/LeakCanary﹕ | mVoiceInteractor = null
D/LeakCanary﹕ | mWindow = com.android.internal.policy.impl.PhoneWindow [id=0x12e5d580]
D/LeakCanary﹕ | mWindowManager = android.view.WindowManagerImpl [id=0x1310ed20]
D/LeakCanary﹕ | mCalled = true
D/LeakCanary﹕ | mChangeCanvasToTranslucent = false
D/LeakCanary﹕ | mChangingConfigurations = false
D/LeakCanary﹕ | mCheckedForLoaderManager = true
D/LeakCanary﹕ | mConfigChangeFlags = 0
D/LeakCanary﹕ | mDefaultKeyMode = 0
D/LeakCanary﹕ | mDestroyed = true
D/LeakCanary﹕ | mDoReportFullyDrawn = false
D/LeakCanary﹕ | mEnableDefaultActionBarUp = false
D/LeakCanary﹕ | mFinished = true
D/LeakCanary﹕ | mIdent = 24993652
D/LeakCanary﹕ | mLoadersStarted = false
D/LeakCanary﹕ | mResultCode = 0
D/LeakCanary﹕ | mResumed = false
D/LeakCanary﹕ | mStartedActivity = false
D/LeakCanary﹕ | mStopped = true
D/LeakCanary﹕ | mTemporaryPause = false
D/LeakCanary﹕ | mTitleColor = 0
D/LeakCanary﹕ | mTitleReady = true
D/LeakCanary﹕ | mVisibleBehind = false
D/LeakCanary﹕ | mVisibleFromClient = true
D/LeakCanary﹕ | mVisibleFromServer = false
D/LeakCanary﹕ | mWindowAdded = true
D/LeakCanary﹕ | mInflater = com.android.internal.policy.impl.PhoneLayoutInflater [id=0x13152580]
D/LeakCanary﹕ | mOverrideConfiguration = null
D/LeakCanary﹕ | mResources = android.content.res.Resources [id=0x12c33f20]
D/LeakCanary﹕ | mTheme = android.content.res.Resources$Theme [id=0x1310ed40]
D/LeakCanary﹕ | mThemeResource = 2131689670
D/LeakCanary﹕ | mBase = android.app.ContextImpl [id=0x12c81100]
答案 0 :(得分：16)
// TextLine.sCached is a pool of 3 TextLine instances. TextLine.recycle() has had at least two
// bugs that created memory leaks by not correctly clearing the recycled TextLine instances.
// The first was fixed in android-5.1.0_r1:
// https://github.com/android/platform_frameworks_base/commit
// /893d6fe48d37f71e683f722457bea646994a10bf
// The second was fixed, not released yet:
// https://github.com/android/platform_frameworks_base/commit
// /b3a9bc038d3a218b1dbdf7b5668e3d6c12be5ee4
// Hack: to fix this, you could access TextLine.sCached and clear the pool every now and then
// (e.g. on activity destroy).
TextLine.sCached public static class Utils {
private static final Field TEXT_LINE_CACHED;
static {
Field textLineCached = null;
try {
textLineCached = Class.forName("android.text.TextLine").getDeclaredField("sCached");
textLineCached.setAccessible(true);
} catch (Exception ex) {
ex.printStackTrace();
}
TEXT_LINE_CACHED = textLineCached;
}
public static void clearTextLineCache() {
// If the field was not found for whatever reason just return.
if (TEXT_LINE_CACHED == null) return;
Object cached = null;
try {
// Get reference to the TextLine sCached array.
cached = TEXT_LINE_CACHED.get(null);
} catch (Exception ex) {
//
}
if (cached != null) {
// Clear the array.
for (int i = 0, size = Array.getLength(cached); i < size; i ++) {
Array.set(cached, i, null);
}
}
}
private Utils() {}
}
需要时致电Utils.clearTextLineCache()。