mac安装 android-sdk时候打开tolls文件的android终端后报错java.lang.NullPointerException 求帮助

mac安装 android-sdk时候打开tolls文件的android终端后报错

java.lang.NullPointerException
    at org.eclipse.swt.widgets.Control.internal_new_GC(Unknown Source)
    at org.eclipse.swt.graphics.GC.<init>(Unknown Source)
    at org.eclipse.swt.graphics.GC.<init>(Unknown Source)
    at org.eclipse.swt.custom.CLabel.getTotalSize(Unknown Source)
    at org.eclipse.swt.custom.CLabel.onPaint(Unknown Source)
    at org.eclipse.swt.custom.CLabel$1.paintControl(Unknown Source)
    at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source)
    at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Display.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source)
    at org.eclipse.swt.widgets.Control.drawWidget(Unknown Source)
    at org.eclipse.swt.widgets.Canvas.drawWidget(Unknown Source)
    at org.eclipse.swt.widgets.Widget.drawRect(Unknown Source)
    at org.eclipse.swt.widgets.Canvas.drawRect(Unknown Source)
    at org.eclipse.swt.widgets.Display.windowProc(Unknown Source)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
    at org.eclipse.swt.widgets.Display.applicationNextEventMatchingMask(Unknown Source)
    at org.eclipse.swt.widgets.Display.applicationProc(Unknown Source)
    at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method)
    at org.eclipse.swt.internal.cocoa.NSApplication.nextEventMatchingMask(Unknown Source)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source)
    at com.android.sdkuilib.internal.repository.ui.SdkUpdaterWindowImpl2.open(SdkUpdaterWindowImpl2.java:148)
    at com.android.sdkuilib.repository.SdkUpdaterWindow.open(SdkUpdaterWindow.java:111)
    at com.android.sdkmanager.Main.showSdkManagerWindow(Main.java:413)
    at com.android.sdkmanager.Main.doAction(Main.java:391)
    at com.android.sdkmanager.Main.run(Main.java:151)
    at com.android.sdkmanager.Main.main(Main.java:117)