我正在创建一个Android应用程序，每当应用程序运行时，会出现一个包含多个组件的活动屏幕。现在，此活动有几个不同的组件。其中一个是图像视图，显示来自图库的不同图像。目前，这些图像通过触摸手势改变。但我想使用左右滑动来实现相同的功能。这是我的代码：
import android.content.ContentResolver;
import android.content.Context;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.graphics.BitmapFactory;
import android.os.Environment;
import android.provider.MediaStore;
import android.provider.MediaStore.Images;
import java.util.Collection;
public class pictures extends ContentResolverAnimatedViewContainer
{
public static final String IMAGE_NAME = Environment.getExternalStorageDirectory().toString() + "/DCIM/Camera";
public static final String IMAGE_ID = getBucketId(CAMERA_IMAGE_BUCKET_NAME);
public static String getBucketId(String path)
{
return String.valueOf(path.toLowerCase().hashCode()); }
static Context cc;
String cp;
int picheight;
public PhotoExample(final Context context) {
super(context, 9);
cc = context;
picheight = getResources().getDimensionPixelSize(R.dimen.photo_example_height);
final String[] projection = { Images.Media.DATA };
final String selection = Images.Media.BUCKET_ID + " = ?";
final String[] selectionArgs = { IMAGE_ID };
createContentResolverLoop(Images.Media.EXTERNAL_CONTENT_URI, projection, selection, selectionArgs, null); }
@Override
public void onCreateData(ContentResolver contentResolver, Cursor dataCursor) {
final int column_data = dataCursor.getColumnIndexOrThrow(Images.Media.DATA);
cp = dataCursor.getString(column_data); }
@Override
public void onCreateViewContent(LayoutInflater layoutInflater, ViewGroup parentGroup, View[] containerViews, int index) {
containerViews[index] = layoutInflater.inflate(R.layout.example_photo, parentGroup, false);
ImageView photoView = (ImageView)containerViews[index].findViewById(R.id.photo);
photoView.setImageBitmap(decodeSampledBitmapFromFile(cp, 0, picheight)); }
public static Bitmap decodeSampledBitmapFromFile(String path, int Width, int Height) {
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(path, options);
options.Size = calculateInSampleSize(options, Width, Height);
options.inJustDecodeBounds = false;
return BitmapFactory.decodeFile(path, options);}
public static int calculateInSampleSize(BitmapFactory.Options options, int Width, int Height) {
final int height = options.outHeight;
final int width = options.outWidth;
int Size = 1;
if (height > reqHeight || width > reqWidth) {
final int height_half = height / 2;
final int width_half = width / 2;
while ((height_half / Size) > Height && (width_half / Size) > Width) {
Size = Size * 2;
} }
return Size;
}
@Override
public void cleanup() { }
}
任何想法我应该如何实施？
感谢。
答案 0 :(得分：3)
[INFO] Apache Oozie Core .................................. FAILURE [ 52.316 s]
[INFO] Apache Oozie Share Lib Streaming ................... SKIPPED
[INFO] Apache Oozie Share Lib Pig ......................... SKIPPED
[INFO] Apache Oozie Share Lib Hive ........................ SKIPPED
[INFO] Apache Oozie Share Lib Hive 2 ...................... SKIPPED
[INFO] Apache Oozie Share Lib Sqoop ....................... SKIPPED
[INFO] Apache Oozie Examples .............................. SKIPPED
[INFO] Apache Oozie Share Lib Spark ....................... SKIPPED
[INFO] Apache Oozie Share Lib ............................. SKIPPED
[INFO] Apache Oozie Docs .................................. SKIPPED
[INFO] Apache Oozie WebApp ................................ SKIPPED
[INFO] Apache Oozie Tools ................................. SKIPPED
[INFO] Apache Oozie MiniOozie ............................. SKIPPED
[INFO] Apache Oozie Distro ................................ SKIPPED
[INFO] Apache Oozie ZooKeeper Security Tests .............. SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 01:58 min
[INFO] Finished at: 2017-08-23T15:45:13+05:30
[INFO] Final Memory: 179M/818M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:testCompile (default-testCompile) on project oozie-core: Compilation failure: Compilation failure:
[ERROR] /home/azhar/Downloads/oozie-4.3.0/core/src/test/java/org/apache/oozie/service/TestEventHandlerService.java:[213,46] error: cannot find symbol
[ERROR] variable logEntry of type LoggingEvent
[ERROR] /home/azhar/Downloads/oozie-4.3.0/core/src/test/java/org/apache/oozie/service/TestEventHandlerService.java:[214,31] error: cannot find symbol
[ERROR] variable logEntry of type LoggingEvent
[ERROR] /home/azhar/Downloads/oozie-4.3.0/core/src/test/java/org/apache/oozie/service/TestEventHandlerService.java:[215,81] error: cannot find symbol
[ERROR] variable logEntry of type LoggingEvent
[ERROR] /home/azhar/Downloads/oozie-4.3.0/core/src/test/java/org/apache/oozie/service/TestEventHandlerService.java:[221,46] error: cannot find symbol
[ERROR] variable logEntry of type LoggingEvent
[ERROR] /home/azhar/Downloads/oozie-4.3.0/core/src/test/java/org/apache/oozie/service/TestEventHandlerService.java:[222,31] error: cannot find symbol
[ERROR] variable logEntry of type LoggingEvent
[ERROR] /home/azhar/Downloads/oozie-4.3.0/core/src/test/java/org/apache/oozie/service/TestEventHandlerService.java:[231,31] error: cannot find symbol
[ERROR] variable logEntry of type LoggingEvent
[ERROR] /home/azhar/Downloads/oozie-4.3.0/core/src/test/java/org/apache/oozie/service/TestEventHandlerService.java:[239,31] error: cannot find symbol
[ERROR] variable logEntry of type LoggingEvent
[ERROR] /home/azhar/Downloads/oozie-4.3.0/core/src/test/java/org/apache/oozie/sla/TestSLACalculatorMemory.java:[817,47] error: cannot find symbol
[ERROR] variable firstLogEntry of type LoggingEvent
[ERROR] /home/azhar/Downloads/oozie-4.3.0/core/src/test/java/org/apache/oozie/sla/TestSLACalculatorMemory.java:[818,32] error: cannot find symbol
[ERROR] variable firstLogEntry of type LoggingEvent
[ERROR] /home/azhar/Downloads/oozie-4.3.0/core/src/test/java/org/apache/oozie/sla/TestSLACalculatorMemory.java:[819,78] error: cannot find symbol
[ERROR] -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:testCompile (default-testCompile) on project oozie-core: Compilation failure
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.CompilationFailureException: Compilation failure
at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:656)
at org.apache.maven.plugin.TestCompilerMojo.execute(TestCompilerMojo.java:161)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
... 20 more
[ERROR]
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
...
ERROR, Oozie distro creation failed
然后使用：
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
public class OnSwipeTouchListener implements OnTouchListener {
private final GestureDetector gestureDetector;
public OnSwipeTouchListener (Context ctx){
gestureDetector = new GestureDetector(ctx, new GestureListener());
}
private final class GestureListener extends SimpleOnGestureListener {
private static final int SWIPE_THRESHOLD = 100;
private static final int SWIPE_VELOCITY_THRESHOLD = 100;
@Override
public boolean onDown(MotionEvent e) {
return true;
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
boolean result = false;
try {
float diffY = e2.getY() - e1.getY();
float diffX = e2.getX() - e1.getX();
if (Math.abs(diffX) > Math.abs(diffY)) {
if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
if (diffX > 0) {
onSwipeRight();
} else {
onSwipeLeft();
}
}
result = true;
}
else if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
if (diffY > 0) {
onSwipeBottom();
} else {
onSwipeTop();
}
}
result = true;
} catch (Exception exception) {
exception.printStackTrace();
}
return result;
}
}
public void onSwipeRight() {
}
public void onSwipeLeft() {
}
public void onSwipeTop() {
}
public void onSwipeBottom() {
}
}
答案 1 :(得分：1)