我使用gridview CHOICE_MODE_MULTIPLE_MODAL在我的gridview中选择多个项目(图像).
我使用MultiChoiceModeListener来实现这个,问题是选中的项目没有得到突出显示
选择器xml:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:state_selected="true" android:drawable="@color/green"/>
<item android:state_pressed="true"
android:drawable="@color/blue"/> <!-- pressed state -->
<item android:state_focused="true"
android:drawable="@color/blue"/> <!-- focused state -->
<item android:drawable="@android:color/transparent"/> <!-- default state -->
</selector>
当我触摸一个项目时,它会被蓝色覆盖(我认为这发生了bcoz我使用了gridView.setDrawSelectorOnTop(true);)…一旦我抬起手指,蓝色就会被移除.
我希望所选项目以半透明蓝色突出显示,并且应该保持突出显示,直到我取消选择该项目.
Java代码:
public class HappyFragment extends ParentFragment {
public HappyImageAdapter imageAdapter;
private List<ResolveInfo> mApps;
GridView gridView;
public static HappyFragment newInstance() {
HappyFragment fragment = new HappyFragment();
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// if ((savedInstanceState != null) && savedInstanceState.containsKey(KEY_CONTENT)) {
// // mContent = savedInstanceState.getString(KEY_CONTENT);
// }
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.happy_fragment_layout, container, false);
// ImageView iv= (ImageView) view.findViewById(R.id.imageView1);
gridView = (GridView)view.findViewById(R.id.gvHappy);
// Instance of ImageAdapter Class
imageAdapter = new HappyImageAdapter(getActivity());
gridView.setAdapter(imageAdapter);
gridView.setChoiceMode(GridView.CHOICE_MODE_MULTIPLE_MODAL);
gridView.setMultiChoiceModeListener(new MultiChoiceModeListener());
gridView.setDrawSelectorOnTop(true);
gridView.setSelector(getResources().getDrawable(R.drawable.gridview_selector));
gridView.setOnItemLongClickListener(new OnItemLongClickListener() {
public boolean onItemLongClick(AdapterView<?> arg0, View arg1, int position, long arg3) {
Toast.makeText(getActivity(), String.valueOf(imageAdapter.mThumbIds[position]), Toast.LENGTH_SHORT).show();
return true;
}
});
gridView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View v,int position, long id) {
if(BaseActivity.isinint) { // check if any app cares for the result
int ImageResourse=imageAdapter.mThumbIds[position];
Uri path = Uri.parse("android.resource://dragonflymobile.stickers.lifestickers/" + ImageResourse);
Intent shareIntent = new Intent(android.content.Intent.ACTION_SEND, path); //Create a new intent. First parameter means that you want to send the file. The second parameter is the URI pointing to a file on the sd card. (openprev has the datatype File)
((Activity)getActivity()).setResult(Activity.RESULT_OK, shareIntent); //set the file/intent as result
((Activity)getActivity()).finish(); //close your application and get back to the requesting application like GMail and WhatsApp
return; //do not execute code below, not important
} else {
Intent intent = new Intent(getActivity(), PreviewActivity.class);
intent.putExtra("Image Int", imageAdapter.mThumbIds[position]);
startActivity(intent);
}
}
});
return view;
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
// outState.putString(KEY_CONTENT, mContent);
}
//multi select mode codes
public class MultiChoiceModeListener implements GridView.MultiChoiceModeListener {
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
mode.setTitle("Select Items");
mode.setSubtitle("One item selected");
return true;
}
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return true;
}
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
return true;
}
public void onDestroyActionMode(ActionMode mode) {
}
public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) {
int selectCount = gridView.getCheckedItemCount();
switch (selectCount) {
case 1:
mode.setSubtitle("One item selected");
break;
default:
mode.setSubtitle("" + selectCount + " items selected");
break;
}
}
}
}
解决方法:
跟着这个,
1.在FrameLayout中输出网格视图子项
2.give FrameLayout属性android:foreground =“?android:attr / activatedBackgroundIndicator”
就是这样……不需要使用额外的库
标签:android,gridview 来源: https://codeday.me/bug/20190717/1490634.html
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