首先，我在gitHub上创建了一个包含我的bug的示例项目的repo： https://github.com/renaudfavier/SampleBug
我的customViewGroups中的listViews有困难： 我模拟了一个assynk数据查询，然后我想填写我的列表视图并遇到困难。请注意，这个应用程序有点矫枉过正，因为我需要它在我的大应用程序中。 我不能传递给碎片。
我的问题是我的listView没有刷新，有时会在菜单打开时刷新
package renaud.bug;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class SampleBugActivity extends Activity {
private boolean menuDisplayed;
private CustomViewGroup cvg;
private ListView myListView;
private ArrayList<String> myStrings;
private MyAdapter stringAdapter;
private LayoutInflater inflater;
private ArrayList<String> array;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
myStrings = new ArrayList<String>();
inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
cvg = (CustomViewGroup) findViewById(R.id.viewGroup);
stringAdapter = new MyAdapter(this, R.layout.list_view_item, myStrings);
myListView = (ListView) findViewById(R.id.listView1);
stringAdapter.add("TEST ");
stringAdapter.notifyDataSetChanged();
myListView.setAdapter(stringAdapter);
new Thread(assyncSim).start();
}
private Runnable onFinish = new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(), "thread finishes push menu button", Toast.LENGTH_LONG);
Log.i("renaud", "thread finishes push menu button");
if (array != null && array.size() > 0) {
stringAdapter.notifyDataSetChanged();
for (int i = 0; i < array.size(); i++) {
stringAdapter.add(array.get(i));
}
}
stringAdapter.notifyDataSetChanged();
}
};
private Runnable assyncSim = new Runnable() {
@Override
public void run() {
array = new ArrayList<String>();
for (int i = 0; i < 10; i++) {
array.add("Item " + i);
}
synchronized (this) {
try {
wait(5000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
runOnUiThread(onFinish);
}
};
@Override
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
if (!menuDisplayed) {
customScroll(200);
menuDisplayed = true;
return true;
} else {
customScroll(0);
menuDisplayed = false;
return true;
}
}
public void customScroll(final int i) {
new Thread(new Runnable() {
@Override
public void run() {
if (i == 0) {
for (int inc = 200; inc >= 0; inc -= 5) {
final int inc2 = inc;
runOnUiThread(new Runnable() {
@Override
public void run() {
cvg.scrollTo(inc2);
}
});
try {
synchronized (this) {
wait(5);
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
} else {
for (int inc = 0; inc <= 200; inc += 5) {
final int inc2 = inc;
runOnUiThread(new Runnable() {
@Override
public void run() {
cvg.scrollTo(inc2);
}
});
try {
synchronized (this) {
wait(5);
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
}).start();
}
private class MyAdapter extends ArrayAdapter<String> {
private ArrayList<String> myStrings;
public MyAdapter(Context context, int textViewResourceId,
ArrayList<String> strings) {
super(context, textViewResourceId, strings);
this.myStrings = strings;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = inflater.inflate(R.layout.list_view_item, null);
}
TextView tv = (TextView) convertView.findViewById(R.id.itemTextView);
tv.setText(myStrings.get(position));
return convertView;
}
}
}
我的customViewGroup：
package renaud.bug;
import android.content.Context;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.MeasureSpec;
import android.view.ViewGroup;
public class CustomViewGroup extends ViewGroup{
private LayoutInflater inflater;
private int mCurScreen;
private int mDefaultScreen = 0;
private View menuView;
private View practicalView;
public CustomViewGroup(Context context) {
super(context);
initView(context);
}
public CustomViewGroup(Context context, AttributeSet attrs) {
super(context, attrs);
initView(context);
}
public CustomViewGroup(Context context, AttributeSet attrs,
int defStyle) {
super(context, attrs, defStyle);
initView(context);
}
private void initView(Context context) {
mCurScreen = mDefaultScreen;
inflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
practicalView = inflater.inflate(R.layout.layout, null);
this.addView(practicalView);
menuView = inflater.inflate(R.layout.menu_layout, null);
this.addView(menuView);
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
// TODO Auto-generated method stub
if (changed) {
int childLeft = 0;
final int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
final View childView = getChildAt(i);
if (childView.getVisibility() != View.GONE) {
final int childWidth = childView.getMeasuredWidth();
childView.layout(childLeft, 0, childLeft + childWidth,
childView.getMeasuredHeight());
childLeft += childWidth;
}
}
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
final int width = MeasureSpec.getSize(widthMeasureSpec);
final int widthMode = MeasureSpec.getMode(widthMeasureSpec);
if (widthMode != MeasureSpec.EXACTLY) {
throw new IllegalStateException(
"ScrollLayout only canmCurScreen run at EXACTLY mode!");
}
final int heightMode = MeasureSpec.getMode(heightMeasureSpec);
if (heightMode != MeasureSpec.EXACTLY) {
throw new IllegalStateException(
"ScrollLayout only can run at EXACTLY mode!");
}
// The children are given the same width and height as the scrollLayout
final int count = getChildCount();
for (int i = 0; i < count; i++) {
getChildAt(i).measure(widthMeasureSpec, heightMeasureSpec);
}
// Log.e(TAG, "moving to screen "+mCurScreen);
scrollTo(mCurScreen * width, 0);
}
public void scrollTo(int i){
scrollTo(i,0);
}
}
我的布局：
主要：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<renaud.bug.CustomViewGroup
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/viewGroup"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
</renaud.bug.CustomViewGroup>
</LinearLayout>
layout.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView
android:id="@+id/listView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#991111"/>
</LinearLayout>
menu_layout.xml：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="#119911" >
</LinearLayout>
ListViewItem的
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:id="@+id/itemTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#FF0"
android:textAppearance="?android:attr/textAppearanceMedium" />
</LinearLayout>