Question

我有一个ScrollView如下：

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" >

<RelativeLayout
    android:layout_height="wrap_content"
    android:layout_width="fill_parent"
    android:orientation="horizontal">

    <TextView
        android:id="@+id/filtersDialogPreference_textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_centerVertical="true" />

    <CheckBox
        android:id="@+id/filtersDialogPreference_checkbox"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true" />
</RelativeLayout>

使用上面的XML的对应类

public class FiltersDialogPreference extends DialogPreference implements OnClickListener{


public FiltersDialogPreference(Context context, AttributeSet attrs) {
    super(context, attrs);
    setPersistent(false);
    mContext = context;
}

@Override
public void onBindDialogView(View view) {
    super.onBindDialogView(view);
}

@Override
protected View onCreateDialogView() {
    LinearLayout layout = null;
    filters = new ArrayList<Filter>();
    checkboxes = new ArrayList<CheckBox>();
    LayoutInflater mInflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    layout = (LinearLayout) mInflater.inflate(R.layout.filter_dialog_preference, null, false);
    FiltersDataSource ds = new FiltersDataSource(mContext);
    ds.open();
    // read the current filter preferences
    ArrayList<String> ids = ds.getFilterIDs();
    View filterView;
    for (int i = 0; i < ids.size(); i++) {
        String name = ds.getFilter(ids.get(i)).getFilterName();
        boolean isMonitored = ds.isMonitored(ids.get(i));
        filters.add(new Filter(ids.get(i), name, isMonitored));

        filterView = mInflater.inflate(R.layout.filter_selection_item, null);
        TextView nametv = (TextView) filterView.findViewById(R.id.filtersDialogPreference_textView);
        nametv.setText(name);
        CheckBox checkBox = (CheckBox) filterView.findViewById(R.id.filtersDialogPreference_checkbox);

        checkBox.setOnClickListener(this);
        checkBox.setChecked(isMonitored);

        checkboxes.add(checkBox);
        layout.addView(filterView);
    }
    ds.close();

    return layout;

}

@Override
public void onDialogClosed(boolean positiveResult) {
    if (positiveResult) {
        Log.v(GSGUIConst.LOG_DEV, "Saving filter settings");
        FiltersDataSource ds = new FiltersDataSource(mContext);
        ds.open();
        for (int i = 0; i < filters.size(); i++) {
            String _id = filters.get(i).mID;
            boolean enabled = filters.get(i).isEnabled();
            ds.setMonitoredValue(_id, enabled);
            //Log.v(GSGUIConst.LOG_DEV, "reread"+ds.getFilter(_id).getFilterName()+": "+ds.isMonitored(_id));
        }
        ds.close();
    }

}

private class Filter {
    private String mName;
    private boolean mEnabled;
    private String mID;

    public Filter(String _id, String name, boolean enabled) {
        mID = _id;
        mName = name;
        mEnabled = enabled;
    }

    public String getID() {
        return mID;
    }

    public boolean isEnabled() {
        return mEnabled;
    }

    public void setEnabled(boolean monitored) {
        mEnabled = monitored;
    }

    public String toString() {
        return mName;
    }
}


@Override
public void onClick(View v) {
    CheckBox checkBox = (CheckBox)v;
    int id = checkboxes.indexOf(checkBox);
    filters.get(id).setEnabled(checkBox.isChecked());
}

}

此设置Activity上有很多条目，但不幸的是布局对滚动没有反应。任何的想法？我不确定是否有必要使用ScrollView。 LinearLayout也应该处理滚动，不应该吗？

Answer 1

在xml

中设置它

android:maxLines = "100"
android:scrollbars = "vertical"

然后在你的活动onCreate：

中使用它

TextView yourTextView = (TextView) findViewById (R.Id.textview1)
yourTextView.setMovementMethod(new ScrollingMovementMethod())

Answer 2

这是因为您将ScrollView的高度设置为wrap_content。尝试给它一个固定的高度或使用一个有重量的LinearLayout，这样它就可以填充其他视图留下的空间。

滚动在ScrollView上不起作用

2 个答案: