我想创建一个应用程序，逐个像素地读取图像，并使用此信息来构建克隆图像。为此，我使用2个ImageViews，一个有艺术图片，另一个有空图片（只有白色背景）。
当我点击按钮开始图片克隆时，我收到此消息：
不幸的是，该应用已停止
我在几个帖子中尝试了几个更改，但我无法解决这个问题。
Array
(
[100] => Array
(
[check_out] => 07/25/2017 5:02:57 PM
[check_in] => 07/25/2017 6:02:57 PM
)
[102] => Array
(
[check_in] => 07/25/2017 7:45:53 AM
[check_out] => 07/25/2017 8:45:54 AM
)
)
这是xml代码：
import android.graphics.Bitmap;
import android.graphics.Color;
import android.graphics.drawable.BitmapDrawable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
cloneAnImagePixelByPixel();
}
public void cloneAnImagePixelByPixel()
{
final Button btn = (Button) findViewById(R.id.button);
btn.setOnClickListener(new View.OnClickListener()
{
@Override
public void onClick(View v)
{
ImageView artimg = (ImageView) findViewById(R.id.art);
ImageView emptyimg = (ImageView) findViewById(R.id.emptyim);
Bitmap bitmap1 = ((BitmapDrawable) artimg.getDrawable()).getBitmap();
Bitmap bitmap2 = ((BitmapDrawable) emptyimg.getDrawable()).getBitmap();
int img_height = bitmap1.getHeight();
int img_width = bitmap1.getWidth();
for (int i = 0; i < img_height; i++)
{
for (int k = 0; k < img_width; k++)
{
int pixel = bitmap1.getPixel(i, k);
int a = Color.alpha(pixel);
int r = Color.red(pixel);
int g = Color.green(pixel);
int b = Color.blue(pixel);
bitmap2.setPixel(i, k, Color.argb(a,r,g,b));
}
}
}
});
}
}
事件日志在这里：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.mypc.creatingacloneimagefrompixels.MainActivity">
<ImageView
android:id="@+id/art"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="@drawable/sandart"
tools:layout_editor_absoluteX="125dp"
tools:layout_editor_absoluteY="57dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="42dp" />
<ImageView
android:id="@+id/emptyim"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:srcCompat="@drawable/empty"
tools:layout_editor_absoluteX="125dp"
tools:layout_editor_absoluteY="205dp"
android:layout_centerVertical="true"
android:layout_alignEnd="@+id/art" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="CLONE IMAGE"
android:textSize="18sp"
android:textStyle="bold"
tools:layout_editor_absoluteX="122dp"
tools:layout_editor_absoluteY="380dp"
android:layout_marginBottom="83dp"
android:layout_alignParentBottom="true"
android:layout_alignStart="@+id/emptyim" />
</RelativeLayout>
Android Monitor就在这里：
28-Jul-17
10:18 AM Executing tasks: [:app:assembleDebug]
10:18 AM Gradle build finished in 11s 988ms
10:38 AM Executing tasks: [:app:assembleDebug]
10:38 AM Gradle build finished in 4s 956ms
10:38 AM ADB rejected shell command (cat /proc/2560/stat): closed
The gradle console is here:
Executing tasks: [:app:generateDebugSources, :app:generateDebugAndroidTestSources, :app:mockableAndroidJar, :app:prepareDebugUnitTestDependencies]
Configuration on demand is an incubating feature.
NDK is missing a "platforms" directory.
If you are using NDK, verify the ndk.dir is set to a valid NDK directory. It is currently set to C:\Users\EASYPC\AppData\Local\Android\Sdk\ndk-bundle.
If you are not using NDK, unset the NDK variable from ANDROID_NDK_HOME or local.properties to remove this warning.
Incremental java compilation is an incubating feature.
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:checkDebugManifest
:app:preReleaseBuild UP-TO-DATE
:app:prepareComAndroidSupportAnimatedVectorDrawable2600Alpha1Library
:app:prepareComAndroidSupportAppcompatV72600Alpha1Library
:app:prepareComAndroidSupportConstraintConstraintLayout102Library
:app:prepareComAndroidSupportSupportCompat2600Alpha1Library
:app:prepareComAndroidSupportSupportCoreUi2600Alpha1Library
:app:prepareComAndroidSupportSupportCoreUtils2600Alpha1Library
:app:prepareComAndroidSupportSupportFragment2600Alpha1Library
:app:prepareComAndroidSupportSupportMediaCompat2600Alpha1Library
:app:prepareComAndroidSupportSupportV42600Alpha1Library
:app:prepareComAndroidSupportSupportVectorDrawable2600Alpha1Library
:app:prepareDebugDependencies
:app:compileDebugAidl UP-TO-DATE
:app:compileDebugRenderscript UP-TO-DATE
:app:generateDebugBuildConfig UP-TO-DATE
:app:generateDebugResValues UP-TO-DATE
:app:generateDebugResources UP-TO-DATE
:app:mergeDebugResources UP-TO-DATE
:app:processDebugManifest UP-TO-DATE
:app:processDebugResources UP-TO-DATE
:app:generateDebugSources UP-TO-DATE
:app:preDebugAndroidTestBuild UP-TO-DATE
:app:prepareComAndroidSupportTestEspressoEspressoCore222Library
:app:prepareComAndroidSupportTestEspressoEspressoIdlingResource222Library
:app:prepareComAndroidSupportTestExposedInstrumentationApiPublish05Library
:app:prepareComAndroidSupportTestRules05Library
:app:prepareComAndroidSupportTestRunner05Library
:app:prepareDebugAndroidTestDependencies
:app:compileDebugAndroidTestAidl UP-TO-DATE
:app:processDebugAndroidTestManifest UP-TO-DATE
:app:compileDebugAndroidTestRenderscript UP-TO-DATE
:app:generateDebugAndroidTestBuildConfig UP-TO-DATE
:app:generateDebugAndroidTestResValues UP-TO-DATE
:app:generateDebugAndroidTestResources UP-TO-DATE
:app:mergeDebugAndroidTestResources UP-TO-DATE
:app:processDebugAndroidTestResources UP-TO-DATE
:app:generateDebugAndroidTestSources UP-TO-DATE
:app:mockableAndroidJar UP-TO-DATE
:app:preDebugUnitTestBuild UP-TO-DATE
:app:prepareDebugUnitTestDependencies
BUILD SUCCESSFUL
Total time: 2.717 secs
Executing tasks: [:app:assembleDebug]
Configuration on demand is an incubating feature.
NDK is missing a "platforms" directory.
If you are using NDK, verify the ndk.dir is set to a valid NDK directory. It is currently set to C:\Users\EASYPC\AppData\Local\Android\Sdk\ndk-bundle.
If you are not using NDK, unset the NDK variable from ANDROID_NDK_HOME or local.properties to remove this warning.
Incremental java compilation is an incubating feature.
:app:buildInfoDebugLoader
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:checkDebugManifest
:app:prepareComAndroidSupportAnimatedVectorDrawable2600Alpha1Library
:app:prepareComAndroidSupportAppcompatV72600Alpha1Library
:app:prepareComAndroidSupportConstraintConstraintLayout102Library
:app:prepareComAndroidSupportSupportCompat2600Alpha1Library
:app:prepareComAndroidSupportSupportCoreUi2600Alpha1Library
:app:prepareComAndroidSupportSupportCoreUtils2600Alpha1Library
:app:prepareComAndroidSupportSupportFragment2600Alpha1Library
:app:prepareComAndroidSupportSupportMediaCompat2600Alpha1Library
:app:prepareComAndroidSupportSupportV42600Alpha1Library
:app:prepareComAndroidSupportSupportVectorDrawable2600Alpha1Library
:app:prepareDebugDependencies
:app:compileDebugAidl UP-TO-DATE
:app:compileDebugRenderscript UP-TO-DATE
:app:generateDebugBuildConfig UP-TO-DATE
:app:generateDebugResValues UP-TO-DATE
:app:generateDebugResources UP-TO-DATE
:app:mergeDebugResources UP-TO-DATE
:app:processDebugManifest
:app:processDebugResources
:app:generateDebugSources
:app:incrementalDebugJavaCompilationSafeguard UP-TO-DATE
:app:javaPreCompileDebug
:app:compileDebugJavaWithJavac UP-TO-DATE
:app:mergeDebugShaders UP-TO-DATE
:app:compileDebugShaders UP-TO-DATE
:app:generateDebugAssets UP-TO-DATE
:app:mergeDebugAssets UP-TO-DATE
:app:processDebugJavaRes UP-TO-DATE
:app:transformResourcesWithMergeJavaResForDebug UP-TO-DATE
:app:packageInstantRunResourcesDebug
:app:fastDeployDebugExtractor UP-TO-DATE
:app:generateDebugInstantRunAppInfo UP-TO-DATE
:app:checkManifestChangesDebug
:app:transformClassesWithExtractJarsForDebug UP-TO-DATE
:app:transformClassesWithInstantRunVerifierForDebug UP-TO-DATE
:app:transformClassesWithDependencyCheckerForDebug UP-TO-DATE
:app:compileDebugNdk UP-TO-DATE
:app:mergeDebugJniLibFolders UP-TO-DATE
:app:transformNativeLibsWithMergeJniLibsForDebug UP-TO-DATE
:app:transformNativeLibsAndResourcesWithJavaResourcesVerifierForDebug UP-TO-DATE
:app:transformClassesWithInstantRunForDebug
:app:transformClassesEnhancedWithInstantReloadDexForDebug
:app:incrementalDebugTasks
:app:preColdswapDebug
:app:transformClassesWithInstantRunSlicerForDebug
:app:transformClassesWithDexForDebug
:app:validateSigningDebug
:app:transformDexWithInstantRunDependenciesApkForDebug
:app:transformDexWithInstantRunSlicesApkForDebug
:app:packageDebug
:app:buildInfoGeneratorDebug
:app:compileDebugSources UP-TO-DATE
:app:assembleDebug
BUILD SUCCESSFUL
Total time: 11.919 secs
Executing tasks: [:app:assembleDebug]
Configuration on demand is an incubating feature.
NDK is missing a "platforms" directory.
If you are using NDK, verify the ndk.dir is set to a valid NDK directory. It is currently set to C:\Users\EASYPC\AppData\Local\Android\Sdk\ndk-bundle.
If you are not using NDK, unset the NDK variable from ANDROID_NDK_HOME or local.properties to remove this warning.
Incremental java compilation is an incubating feature.
:app:buildInfoDebugLoader
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:checkDebugManifest
:app:prepareComAndroidSupportAnimatedVectorDrawable2600Alpha1Library
:app:prepareComAndroidSupportAppcompatV72600Alpha1Library
:app:prepareComAndroidSupportConstraintConstraintLayout102Library
:app:prepareComAndroidSupportSupportCompat2600Alpha1Library
:app:prepareComAndroidSupportSupportCoreUi2600Alpha1Library
:app:prepareComAndroidSupportSupportCoreUtils2600Alpha1Library
:app:prepareComAndroidSupportSupportFragment2600Alpha1Library
:app:prepareComAndroidSupportSupportMediaCompat2600Alpha1Library
:app:prepareComAndroidSupportSupportV42600Alpha1Library
:app:prepareComAndroidSupportSupportVectorDrawable2600Alpha1Library
:app:prepareDebugDependencies
:app:compileDebugAidl UP-TO-DATE
:app:compileDebugRenderscript UP-TO-DATE
:app:generateDebugBuildConfig UP-TO-DATE
:app:generateDebugResValues UP-TO-DATE
:app:generateDebugResources UP-TO-DATE
:app:mergeDebugResources UP-TO-DATE
:app:processDebugManifest UP-TO-DATE
:app:processDebugResources UP-TO-DATE
:app:generateDebugSources
:app:incrementalDebugJavaCompilationSafeguard UP-TO-DATE
:app:javaPreCompileDebug
:app:compileDebugJavaWithJavac UP-TO-DATE
:app:mergeDebugShaders UP-TO-DATE
:app:compileDebugShaders UP-TO-DATE
:app:generateDebugAssets UP-TO-DATE
:app:mergeDebugAssets UP-TO-DATE
:app:processDebugJavaRes UP-TO-DATE
:app:transformResourcesWithMergeJavaResForDebug UP-TO-DATE
:app:packageInstantRunResourcesDebug UP-TO-DATE
:app:fastDeployDebugExtractor UP-TO-DATE
:app:generateDebugInstantRunAppInfo UP-TO-DATE
:app:checkManifestChangesDebug
:app:transformClassesWithExtractJarsForDebug UP-TO-DATE
:app:transformClassesWithInstantRunVerifierForDebug UP-TO-DATE
:app:transformClassesWithDependencyCheckerForDebug UP-TO-DATE
:app:compileDebugNdk UP-TO-DATE
:app:mergeDebugJniLibFolders UP-TO-DATE
:app:transformNativeLibsWithMergeJniLibsForDebug UP-TO-DATE
:app:transformNativeLibsAndResourcesWithJavaResourcesVerifierForDebug UP-TO-DATE
:app:transformClassesWithInstantRunForDebug UP-TO-DATE
:app:transformClassesEnhancedWithInstantReloadDexForDebug UP-TO-DATE
:app:incrementalDebugTasks UP-TO-DATE
:app:preColdswapDebug
:app:transformClassesWithInstantRunSlicerForDebug UP-TO-DATE
:app:transformClassesWithDexForDebug UP-TO-DATE
:app:validateSigningDebug
:app:transformDexWithInstantRunDependenciesApkForDebug UP-TO-DATE
:app:transformDexWithInstantRunSlicesApkForDebug UP-TO-DATE
:app:packageDebug UP-TO-DATE
:app:buildInfoGeneratorDebug
:app:compileDebugSources UP-TO-DATE
:app:assembleDebug
BUILD SUCCESSFUL
Total time: 4.89 secs
答案 0 :(得分：0)
我相信你的问题是bitmap2不可变。您可以使用Bitmap.copy()设置为true或使用isMutable来创建可变位图。您还可以使用Bitmap.create(width,height,config)
inMutable设置为true来加载可变位图