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我试图从xml文件动态地添加一些ProgressBar视图到膨胀的布局。我继续得到的ClassCastExceptions运行下面的代码时:检索dyamily膨胀的布局与
// === This is the part I'm having trouble with ===
ProgressBar v = (ProgressBar) mLayoutInflater.inflate(R.layout.dayprogressbar, ll);
ProgressBar p = (ProgressBar) mLayoutInflater.inflate(R.layout.dayprogressbar, ll);
下面的代码是如何工作的,而不管型和无差错运行,但我需要的意见,进度条工作。有没有什么办法可以做到这一点没有得到一个ClassCastException
/**
* Pulls the layout from R.layout.listview and creates a single list
* entry and returns it as a view to be put into the listview
*/
public View getView(int position, View convertView, ViewGroup parent) {
// the view to be returned
View itemLayoutView = convertView;
// if the view doesn't exist, create the layout from the inflator
if (itemLayoutView == null) {
LayoutInflater mLayoutInflater = (LayoutInflater) getContext()
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// use listview.xml
itemLayoutView = mLayoutInflater.inflate(R.layout.listview,
null);
LinearLayout ll = (LinearLayout) itemLayoutView.findViewById(R.id.List_Main_LinearLayout_ProgressBars);
// === This is the part I'm having trouble with ===
View v = mLayoutInflater.inflate(R.layout.dayprogressbar, ll);
View p = mLayoutInflater.inflate(R.layout.dayprogressbar, ll);
}
这里是R.layout.dayprogressbar.xml我正在不断膨胀:
<ProgressBar
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:progress="50"
android:indeterminateOnly="false"
android:progressDrawable="@android:drawable/progress_horizontal"
android:indeterminateDrawable="@android:drawable/progress_indeterminate_horizontal"
android:minHeight="1dip"
android:maxHeight="1dip"
android:max="100"
android:paddingLeft="1dp"
android:layout_weight="2"
/>
我不能undrstnd乌尔need.you要在布局中添加进度或想要定制进度? – 2011-02-02 07:53:45
我已经膨胀了一个xml文件,但是我想向文件内的一个linearlayout添加2个进度条。这里是我拉线性布局的地方 LinearLayout ll =(LinearLayout)itemLayoutView.findViewById(R.id.List_Main_LinearLayout_ProgressBars); 我想将进度条添加到此布局,然后更改条的进度。要更改条的进度,我需要使用2个充气的dayprogressbar.xml对象作为ProgressBar对象而不是View对象,所以我需要以某种方式进行投射或转换。我想知道如何做到这一点,而不会例外:) – 2011-02-02 08:02:09