Eclipse から Android Studio にアプリを移植していますが、API が 17 未満のエミュレーターでアプリを実行しようとすると、検証エラーが発生します。これに対処する方法についてのガイダンスをいただければ幸いです。API 8 エミュレーターの logcat には次のように表示されます。
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;
これに続いて (驚くことではありませんが) すぐに、アプリがjava.lang.VerifyError. 同じ .apk ファイルは、API レベル 17 以降で問題なく動作します。API 17 以降ではさまざまなコード パスがありますが、GlyphMetricsクラスは API レベルに関係なく、ある時点で使用されます。(コード パスが異なると、クラスがロードされたときに検証エラーが発生するかどうかに違いが生じる場合は、誰か教えてください!)
このGlyphMetricsクラスは、アプリで使用する自作のビットマップ フォントに関するいくつかのメトリック情報の非常に単純なコンテナーです。
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);
}
}
}
}
}
( importUPPER_DIACRITICとLOWER_DIACRITICは、それぞれ定数 0 と 1 です。)
com.android.tools.build:gradle:2.0.0-alpha3GradleプラグインとJDK 1.7.0_80を備えたAndroid Studio 2.0 Preview 4を使用してこれを構築しています。build.gradle.apk モジュールのファイルは次のとおりです。
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')
}
この問題はデバッグ ビルド タイプで発生するため、現時点では ProGuard は対象外です。