我正在将一个应用程序从 Eclipse 移植到 Android Studio，但在尝试在 API 小于 17 的模拟器上运行该应用程序时遇到验证错误。如果能提供有关如何处理此问题的任何指导，我将不胜感激。以下是 API 8 模拟器上 logcat 中显示的内容:
12-27 01:48:27.189 431-431/com.zigzagworld.icjl.tanachbible W/dalvikvm: VFY: register1 v10 type 12, wanted 10
12-27 01:48:27.189 431-431/com.zigzagworld.icjl.tanachbible W/dalvikvm: VFY: rejecting opcode 0x70 at 0x005e
12-27 01:48:27.189 431-431/com.zigzagworld.icjl.tanachbible W/dalvikvm: VFY: rejected Lcom/zigzagworld/fonts/GlyphMetrics;.<init> (SSS[S)V
12-27 01:48:27.189 431-431/com.zigzagworld.icjl.tanachbible W/dalvikvm: Verifier rejected class Lcom/zigzagworld/fonts/GlyphMetrics;
紧接着(毫不奇怪)应用程序崩溃并出现 java.lang.VerifyError。相同的 .apk 文件将在 API 级别 17 及更高级别上运行得很好。 API 17 及更高版本有不同的代码路径，但无论 API 级别如何，在某些时候都会使用 GlyphMetrics 类。 (如果不同的代码路径会影响一个类在加载时是否产生验证错误，请有人告诉我!)
GlyphMetrics 类是一个非常简单的容器，用于存放与我们在应用程序中使用的自制位图字体有关的一些度量信息:
package com.zigzagworld.fonts;
import static com.zigzagworld.fonts.Diacritics.LOWER_DIACRITIC;
import static com.zigzagworld.fonts.Diacritics.UPPER_DIACRITIC;
/**
* Represents the layout metrics for a glyph.
*
* @author Ted Hopp
*/
public final class GlyphMetrics {
public static final short[] EMPTY_EXCLUSION = new short[0];
public static final short[][] EMPTY_EXCLUSIONS = { EMPTY_EXCLUSION, EMPTY_EXCLUSION };
/** The width of the glyph image, in pixels. */
public short width;
/** The height of the glyph image, in pixels. */
public short height;
/**
* The distance in pixels between the top of the glyph image and the
* baseline of the line. A positive value means that the top of the glyph
* should be above the baseline of the line; a negative value means that the
* top of the glyph should be below the baseline of the line.
*/
public short baseline;
/**
* The upper and lower axes for placement of diacriticals. Each axis is the
* distance from the left of the glyph image at which diacriticals should be
* centered. (The formatting algorithm for the font may move diacriticals
* from this position to avoid interference between glyphs.)
*/
public short[] axes;
/**
* The upper and lower exclusion zone arrays. If there are <i>n</i> upper
* (say) zones, the upper array has length length 2*<i>n</i>. The array has
* the left edge of the first zone, the right edge of the first zone, the
* left edge of the second zone, etc. The lower zone data are organized in
* the same way.
*/
public short[][] zones;
public GlyphMetrics(short width, short height, short baseline, short[] layoutData) {
this.width = width;
this.height = height;
this.baseline = baseline;
axes = new short[2];
width >>= 1; // for the rest of this, we need the half-width
if (layoutData == null || layoutData.length == 0) {
axes[UPPER_DIACRITIC] = axes[LOWER_DIACRITIC] = width;
zones = EMPTY_EXCLUSIONS;
} else {
axes[UPPER_DIACRITIC] = layoutData[0];
if (layoutData.length < 2) {
axes[LOWER_DIACRITIC] = width;
} else {
axes[LOWER_DIACRITIC] = layoutData[1];
}
if (layoutData.length < 5) {
zones = EMPTY_EXCLUSIONS;
} else {
int nUpper = layoutData[2] << 1;
zones = new short[2][];
zones[UPPER_DIACRITIC] = new short[nUpper];
System.arraycopy(layoutData, 3, zones[UPPER_DIACRITIC], 0, nUpper);
int lowerStart = 3 + nUpper;
if (layoutData.length < 2 + lowerStart) {
zones[LOWER_DIACRITIC] = EMPTY_EXCLUSION;
} else {
int nLower = layoutData[lowerStart++] << 1;
zones[LOWER_DIACRITIC] = new short[nLower];
System.arraycopy(layoutData, lowerStart, zones[LOWER_DIACRITIC], 0, nLower);
}
}
}
}
}
(导入的 UPPER_DIACRITIC 和 LOWER_DIACRITIC 分别是常量 0 和 1。)
我正在使用带有 Gradle 插件 com.android.tools.build:gradle:2.0.0-alpha3 和 JDK 1.7.0_80 的 Android Studio 2.0 Preview 4 构建它。这是 .apk 模块的 build.gradle 文件:
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion '23.0.2'
defaultConfig {
applicationId "com.zigzagworld.icjl.tanachbible"
minSdkVersion 8
targetSdkVersion 23
versionCode 10800310
versionName "3.1.0"
manifestPlaceholders = [
appName: "App",
v8TOCActivityName: "BaseTOCActivity",
v8PurchaseActivityName: "PurchaseActivity",
v17TOCActivityName: "TOCActivity",
v17PurchaseActivityName: "PurchaseActivity",
]
}
signingConfigs {
// redacted for this post
}
buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
//noinspection GroovyAssignabilityCheck
signingConfig // redacted
}
}
flavorDimensions "market"
productFlavors {
google {
dimension "market"
manifestPlaceholders = [
appName: "App_Google",
v8TOCActivityName: "TOCActivity_Google",
v8PurchaseActivityName: "GooglePurchaseActivity",
v17TOCActivityName: "TOCActivity_Google",
v17PurchaseActivityName: "GooglePurchaseActivity"
]
}
amazon {
dimension "market"
manifestPlaceholders = [
appName: "App_Amazon",
v8TOCActivityName: "BaseTOCActivity",
v8PurchaseActivityName: "PurchaseActivity",
v17TOCActivityName: "TOCActivity",
v17PurchaseActivityName: "PurchaseActivity"
]
}
sideLoad {
dimension "market"
manifestPlaceholders = [
appName: "App_Unlicensed",
v8TOCActivityName: "BaseTOCActivity",
v8PurchaseActivityName: "PurchaseActivity",
v17TOCActivityName: "TOCActivity",
v17PurchaseActivityName: "PurchaseActivity"
]
}
}
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:support-annotations:23.1.1'
compile project(':Tanach Data')
googleCompile project(':Google Vending')
amazonCompile project(':Amazon Vending')
}
问题出现在调试构建类型中，因此此时 ProGuard 不在画面中。
最佳答案
在这上面花了几天时间后，我刚刚发现将 gradle 插件从 2.0.0-alpha3 降级到 1.5.0 会使问题消失。
这就是我们为保持领先地位而付出的代价。
关于java - Android Studio 验证在 API < 17 上运行的错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/34486732/