小编Sob*_*shy的帖子

我将Android studio更新为3.1,更新后出现此错误:

 Program type already present: android.support.v13.view.DragAndDropPermissionsCompat
    Message{kind=ERROR, text=Program type already present: android.support.v13.view.DragAndDropPermissionsCompat, sources=[Unknown source file], tool name=Optional.of(D8)}

org.gradle.api.tasks.TaskExecutionException:任务':app:transformDexArchiveWithExternalLibsDexMergerForDebug'的执行失败.

引起:java.lang.RuntimeException:com.android.builder.dexing.DexArchiveMergerException

引起:com.android.tools.r8.CompilationFailedException:编译未能完成>

 org.gradle.api.tasks.TaskExecutionException: Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'.
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.executeActions(ExecuteActionsTaskExecuter.java:100)
    at org.gradle.api.internal.tasks.execution.ExecuteActionsTaskExecuter.execute(ExecuteActionsTaskExecuter.java:70)
    at org.gradle.api.internal.tasks.execution.OutputDirectoryCreatingTaskExecuter.execute(OutputDirectoryCreatingTaskExecuter.java:51)
    at org.gradle.api.internal.tasks.execution.SkipUpToDateTaskExecuter.execute(SkipUpToDateTaskExecuter.java:62)
    at org.gradle.api.internal.tasks.execution.ResolveTaskOutputCachingStateExecuter.execute(ResolveTaskOutputCachingStateExecuter.java:54)
    at org.gradle.api.internal.tasks.execution.ValidatingTaskExecuter.execute(ValidatingTaskExecuter.java:60)
    at org.gradle.api.internal.tasks.execution.SkipEmptySourceFilesTaskExecuter.execute(SkipEmptySourceFilesTaskExecuter.java:97)
    at org.gradle.api.internal.tasks.execution.CleanupStaleOutputsExecuter.execute(CleanupStaleOutputsExecuter.java:87)
    at org.gradle.api.internal.tasks.execution.ResolveTaskArtifactStateTaskExecuter.execute(ResolveTaskArtifactStateTaskExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipTaskWithNoActionsExecuter.execute(SkipTaskWithNoActionsExecuter.java:52)
    at org.gradle.api.internal.tasks.execution.SkipOnlyIfTaskExecuter.execute(SkipOnlyIfTaskExecuter.java:54)
    at org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter.execute(ExecuteAtMostOnceTaskExecuter.java:43)
    at org.gradle.api.internal.tasks.execution.CatchExceptionTaskExecuter.execute(CatchExceptionTaskExecuter.java:34)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker$1.run(DefaultTaskGraphExecuter.java:248)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:336)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor$RunnableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:328)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:199)
    at org.gradle.internal.progress.DefaultBuildOperationExecutor.run(DefaultBuildOperationExecutor.java:110)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:241)
    at org.gradle.execution.taskgraph.DefaultTaskGraphExecuter$EventFiringTaskWorker.execute(DefaultTaskGraphExecuter.java:230)
    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.processTask(DefaultTaskPlanExecutor.java:123)
    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker.access$200(DefaultTaskPlanExecutor.java:79)
    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:104)
    at org.gradle.execution.taskgraph.DefaultTaskPlanExecutor$TaskExecutorWorker$1.execute(DefaultTaskPlanExecutor.java:98)
    at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.execute(DefaultTaskExecutionPlan.java:626)
    at org.gradle.execution.taskgraph.DefaultTaskExecutionPlan.executeWithTask(DefaultTaskExecutionPlan.java:581)
    at …

我想在 Sqlite 中添加和删除警报，但出现此错误是因为我使用片段

D:\ISLaMiC\SoBhY\amira\app\src\main\java\com\amira\amira\amira\ChatCalendarProfile\Calendar\CalendarFragment.java 错误：找不到符号方法 getContentResolver() 错误：找不到符号方法 getContentResolver()

    Uri newUri = getContentResolver().insert(AlertEntry.CONTENT_URI, values);
      int rowsDeleted = getContentResolver().delete(AlertEntry.CONTENT_URI, null, null);

    package com.amira.amira.amira.ChatCalendarProfile.Calendar;

    import android.app.LoaderManager;
    import android.content.ContentUris;
    import android.content.ContentValues;
    import android.content.Context;
    import android.content.CursorLoader;
    import android.content.Intent;
    import android.content.Loader;
    import android.database.Cursor;
    import android.net.Uri;
    import android.support.annotation.Nullable;
    import android.support.v4.app.Fragment;
    import android.os.Bundle;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.AdapterView;
    import android.widget.ListView;

    import com.amira.amira.amira.ChatCalendarProfile.Calendar.data.AlertContract;
    import com.amira.amira.amira.R;

    import static com.amira.amira.amira.ChatCalendarProfile.Calendar.data.AlertContract.*;
    public class CalendarFragment extends Fragment implements LoaderManager.LoaderCallbacks<Cursor> {
        private static final int PET_LOADER = 0;
        AlertCursorAdapter mCursorAdapter;
        public …