我想从主要调用我的子活动。在此期间,我需要将linkedhashSet传递给它。 在儿童活动中,我想对这个哈希集合执行一些操作, 和点击儿童活动中对话框的确定按钮,我想将这个新的链接集合返回给pareent。失败传递结果ResultInfo {who = null,请求= 200,结果= -1,数据=意图
目前我使用下面的代码在父母的活动,同时发送原始的HashSet:
Bundle bundle = new Bundle();
bundle.putSerializable("keyThumbNails", thumbNailsLnkdhs);
Intent AndroidCustomGalleryActivityIntent = new Intent(parentActivity.this, childActivity.class);
childActivity.putExtras(bundle);
startActivityForResult(childActivity,200);
Log.d(LOGGER, "ChildyActivityIntent called ");
它工作正常。 我可以在儿童活动中接收这个哈希集,我可以对它进行操作。
我尝试使用下面的代码来发送新的HashSet:
new AlertDialog.Builder(this)
.setMessage(mymessage)
.setTitle(title)
.setNeutralButton(android.R.string.ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton){
Log.d(LOGGER, "AlertDialog neutral btn");
// // the button was clicked
Bundle bundleToSend = new Bundle();
bundleToSend.putSerializable("keyThumbNailsOfSelectedImages", SelectedThumbnailsPathsLnkdhs);
Intent SearchWebForWallPaperActivityIntent = new Intent(AndroidCustomGalleryActivity.this, SearchWebForWallPaperActivity.class);
SearchWebForWallPaperActivityIntent.putExtra("RESULT",bundleToSend);
setResult(Activity.RESULT_OK, SearchWebForWallPaperActivityIntent);
finish();
}
})
.show();
}
这是正确shwon。
在父活动我使用下面的代码收到此HashSet的......这段代码有问题后,“得到包”记录......
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch(requestCode) {
case (200) : {
if (resultCode == Activity.RESULT_OK) {
Log.d(LOGGER, "inside RESULT OK");
//Bundle revievedBundle = this.getIntent().getExtras();
Bundle recievedBundle = data.getExtras();
Log.d(LOGGER, "got bundle");
// if(recievedBundle.isEmpty()){
//Log.d(LOGGER, "its empty");
//}
SelectedThumbnailsPathsLnkdhs = (LinkedHashSet<String>) recievedBundle.getSerializable("keyThumbNailsOfSelectedImages");
Log.d(LOGGER, "ThumbNailsLnkdhs size in SearchWebForWallPaperActivity intent: "+SelectedThumbnailsPathsLnkdhs.size());
Toast.makeText(getApplicationContext(),
"ThumbNailsLnkdhs size in old intent: "+SelectedThumbnailsPathsLnkdhs.size(), Toast.LENGTH_LONG).show();
}
break;
}
}
}
我尝试了很多事情,搜索长让它工作。 但不可能成功:( 任何人都可以看看这个代码,并帮助我吗?
以下是logcat的痕迹:
03-11 00:24:20.310: D/ADITYA(3959): inside RESULT OK
03-11 00:24:20.310: D/ADITYA(3959): got bundle
03-11 00:24:20.341: D/AndroidRuntime(3959): Shutting down VM
03-11 00:24:20.341: W/dalvikvm(3959): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
03-11 00:24:20.420: E/AndroidRuntime(3959): FATAL EXCEPTION: main
03-11 00:24:20.420: E/AndroidRuntime(3959): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=200, result=1, data=Intent { cmp=com.practice.wallpaper/.SearchWebForWallPaperActivity (has extras) }} to activity {com.practice.wallpaper/com.practice.wallpaper.SearchWebForWallPaperActivity}: java.lang.NullPointerException
03-11 00:24:20.420: E/AndroidRuntime(3959): at android.app.ActivityThread.deliverResults(ActivityThread.java:3515)
03-11 00:24:20.420: E/AndroidRuntime(3959): at android.app.ActivityThread.handleSendResult(ActivityThread.java:3557)
03-11 00:24:20.420: E/AndroidRuntime(3959): at android.app.ActivityThread.access$2800(ActivityThread.java:125)
03-11 00:24:20.420: E/AndroidRuntime(3959): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2063)
03-11 00:24:20.420: E/AndroidRuntime(3959): at android.os.Handler.dispatchMessage(Handler.java:99)
03-11 00:24:20.420: E/AndroidRuntime(3959): at android.os.Looper.loop(Looper.java:123)
03-11 00:24:20.420: E/AndroidRuntime(3959): at android.app.ActivityThread.main(ActivityThread.java:4627)
03-11 00:24:20.420: E/AndroidRuntime(3959): at java.lang.reflect.Method.invokeNative(Native Method)
03-11 00:24:20.420: E/AndroidRuntime(3959): at java.lang.reflect.Method.invoke(Method.java:521)
03-11 00:24:20.420: E/AndroidRuntime(3959): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
03-11 00:24:20.420: E/AndroidRuntime(3959): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
03-11 00:24:20.420: E/AndroidRuntime(3959): at dalvik.system.NativeStart.main(Native Method)
03-11 00:24:20.420: E/AndroidRuntime(3959): Caused by: java.lang.NullPointerException
03-11 00:24:20.420: E/AndroidRuntime(3959): at com.practice.wallpaper.SearchWebForWallPaperActivity.onActivityResult(myActivity.java:198)
03-11 00:24:20.420: E/AndroidRuntime(3959): at android.app.Activity.dispatchActivityResult(Activity.java:3890)
03-11 00:24:20.420: E/AndroidRuntime(3959): at android.app.ActivityThread.deliverResults(ActivityThread.java:3511)
03-11 00:24:20.420: E/AndroidRuntime(3959): ... 11 more
显示堆栈跟踪信息,请 – 2012-03-10 19:13:35
编辑我的问题,并添加logcat的痕迹。谢谢 – adityag 2012-03-10 19:26:29
嗨,嗨,你为什么使用'putSerializable'? – 2012-03-10 19:34:13