GridView和导航抽屉没有一起工作的android [英] gridview and navigation drawer not working together in android
问题描述
我已经下载了$ C $下GridView和code的导航栏。 这两个codeS工作正常独立,但是当我试图将它们合并其提供一个运行时错误不幸的是应用程序已停止。
下面是我的code:
MainActivity.java
公共类MainActivity延伸活动{
私人DrawerLayout mDrawerLayout;
私人的ListView mDrawerList;
私人ActionBarDrawerToggle mDrawerToggle;
私人的CharSequence mDrawerTitle;
私人的CharSequence mTitle;
私有String [] mPlanetTitles;
@覆盖
保护无效的onCreate(包savedInstanceState){
super.onCreate(savedInstanceState);
的setContentView(R.layout.activity_main);
mTitle = mDrawerTitle =的getTitle();
mPlanetTitles = getResources()getStringArray(R.array.planets_array)。
mDrawerLayout =(DrawerLayout)findViewById(R.id.drawer_layout);
mDrawerList =(ListView控件)findViewById(R.id.left_drawer);
抽屉打开时//设置自定义影子覆盖的主要内容
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow,GravityCompat.START);
//设置抽屉的列表视图项,然后单击监听器
mDrawerList.setAdapter(新ArrayAdapter<字符串>(这一点,
R.layout.drawer_list_item,mPlanetTitles));
mDrawerList.setOnItemClickListener(新DrawerItemClickListener());
//使动作条的应用程序图标,表现为动作切换导航抽屉
getActionBar()setDisplayHomeAsUpEnabled(真)。
getActionBar()setHomeButtonEnabled(真)。
// ActionBarDrawerToggle联系在一起的适当交互
//滑动抽屉和操作栏中的应用程序图标之间
mDrawerToggle =新ActionBarDrawerToggle(
此时,/ *主机活动* /
mDrawerLayout,/ * DrawerLayout对象* /
R.drawable.ic_drawer,/ *导航抽屉图像,以取代上插入符* /
R.string.drawer_open,/ *开放抽屉说明访问* /
R.string.drawer_close / *关闭抽屉说明访问* /
){
公共无效onDrawerClosed(查看视图){
。getActionBar()的setTitle(mTitle);
invalidateOptionsMenu(); //创建调用上prepareOptionsMenu()
}
公共无效onDrawerOpened(查看drawerView){
。getActionBar()的setTitle(mDrawerTitle);
invalidateOptionsMenu(); //创建调用上prepareOptionsMenu()
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
如果(savedInstanceState == NULL){
选择信息(0);
}
}
@覆盖
公共布尔onCreateOptionsMenu(功能菜单){
MenuInflater充气= getMenuInflater();
inflater.inflate(R.menu.main,菜单);
返回super.onCreateOptionsMenu(菜单);
}
/ *调用当我们调用invalidateOptionsMenu()* /
@覆盖
公共布尔prepareOptionsMenu(功能菜单)在{
//如果NAV抽屉被打开,隐藏操作项相关内容视图
布尔drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
menu.findItem(R.id.action_websearch).setVisible(drawerOpen!);
返回super.on prepareOptionsMenu(菜单);
}
@覆盖
公共布尔onOptionsItemSelected(菜单项项){
//操作栏家居/后续行动应打开或关闭抽屉。
// ActionBarDrawerToggle将照顾这。
如果(mDrawerToggle.onOptionsItemSelected(项目)){
返回true;
}
//手柄操作按钮
开关(item.getItemId()){
案例R.id.action_websearch:
//创建意图为这个星球上执行网络搜索
意向意图=新的意图(Intent.ACTION_WEB_SEARCH);
intent.putExtra(SearchManager.QUERY,getActionBar()的getTitle());
//捕获事件,有没有活动处理的意图
如果(intent.resolveActivity(getPackageManager())!= NULL){
startActivity(意向);
} 其他 {
Toast.makeText(这一点,R.string.app_not_available,Toast.LENGTH_LONG).show();
}
返回true;
默认:
返回super.onOptionsItemSelected(项目);
}
}
/ *的点击听者中的ListView控件中的抽屉式导航* /
私有类DrawerItemClickListener实现ListView.OnItemClickListener {
@覆盖
公共无效onItemClick(适配器视图<>母公司视图中查看,INT位置,长的id){
选择信息(位置);
}
}
私人无效选择信息(INT位置){
//更新替换片段的主要内容
片段片段=新PlanetFragment();
捆绑的args =新包();
args.putInt(PlanetFragment.ARG_PLANET_NUMBER,位置);
fragment.setArguments(参数);
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction()代替(R.id.content_frame,片段).commit()。
//更新所选项目和标题,然后关上抽屉
mDrawerList.setItemChecked(位置,真正的);
的setTitle(mPlanetTitles [位置]);
mDrawerLayout.closeDrawer(mDrawerList);
}
@覆盖
保护无效onPostCreate(包savedInstanceState){
super.onPostCreate(savedInstanceState);
//同步发生onRestoreInstanceState后切换状态。
mDrawerToggle.syncState();
}
@覆盖
公共无效onConfigurationChanged(配置NEWCONFIG){
super.onConfigurationChanged(NEWCONFIG);
//传递任何配置更改抽屉toggls
mDrawerToggle.onConfigurationChanged(NEWCONFIG);
}
/ **
*片段出现在content_frame,显示一个星球
* /
公共静态类PlanetFragment扩展片段{
公共静态最后弦乐ARG_PLANET_NUMBER =planet_number;
GridView控件GridView控件;
公共PlanetFragment(){
需要片段子类//空构造
}
@覆盖
公共查看onCreateView(LayoutInflater充气,容器的ViewGroup,
捆绑savedInstanceState){
查看rootView = inflater.inflate(R.layout.fragment_planet,集装箱,假);
gridview的=(GridView控件)rootView.findViewById(R.id.gridview);
ImageAdapter I =新ImageAdapter(本);
gridview.setAdapter(ⅰ);
返回rootView;
}
}
ImageAdapter.java
公共类ImageAdapter扩展了BaseAdapter {
私有静态最后上下文PlanetFragment = NULL;
私人PlanetFragment mContext;
公共ImageAdapter(PlanetFragment C){
mContext = C;
}
公众诠释getCount将(){
返回mThumbIds.length;
}
公共对象的getItem(INT位置){
返回null;
}
众长getItemId(INT位置){
返回0;
}
公共查看getView(INT位置,查看convertView,ViewGroup中父){
ImageView的ImageView的;
如果(convertView == NULL){//如果它不回收,初始化一些属性
ImageView的=新ImageView的(PlanetFragment);
imageView.setLayoutParams(新GridView.LayoutParams(150,150));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(4,4,4,4);
} 其他 {
ImageView的=(ImageView的)convertView;
}
imageView.setImageResource(mThumbIds [位置]);
返回ImageView的;
}
私人整数[] mThumbIds = {
R.drawable.snehalaya,R.drawable.prayas_11,
R.drawable.vs,R.drawable.adr,
R.drawable.anandvan,R.drawable.bgbb,
R.drawable.bngvn,R.drawable.dilasa,
R.drawable.hohk,R.drawable.jivan,
R.drawable.mahan,R.drawable.vishva,
R.drawable.saraswati,R.drawable.samaj,
R.drawable.atma
};
}
activity_main.xml
< android.support.v4.widget.DrawerLayout
的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:ID =@ + ID / drawer_layout
机器人:layout_width =match_parent
机器人:layout_height =match_parent>
<的FrameLayout
机器人:ID =@ + ID / content_frame
机器人:layout_width =match_parent
机器人:layout_height =match_parent/>
<的ListView
机器人:ID =@ + ID / left_drawer
机器人:layout_width =240dp
机器人:layout_height =match_parent
机器人:layout_gravity =开始
机器人:choiceMode =singleChoice
机器人:分隔=@机器人:彩色/透明
机器人:dividerHeight =0dp
机器人:后台=#111/>
< /android.support.v4.widget.DrawerLayout>
drawer_list_item.xml
< TextView中的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:ID =@机器人:ID / text1中
机器人:layout_width =match_parent
机器人:layout_height =WRAP_CONTENT
机器人:textAppearance =机器人:ATTR / textAppearanceListItemSmall
机器人:重力=center_vertical
机器人:以下属性来=16DP
机器人:paddingRight =16DP
机器人:文字颜色=#FFF
机器人:背景=机器人:ATTR / activatedBackgroundIndicator
机器人:=了minHeight:/>中的Android ATTR /列表preferredItemHeightSmall?
fragment_planet.xml
< LinearLayout中的xmlns:机器人=http://schemas.android.com/apk/res/android
机器人:layout_width =FILL_PARENT
机器人:layout_height =FILL_PARENT
机器人:layout_weight =6
机器人:后台=#000000
>
< GridView控件
机器人:ID =@ + ID / GridView控件
机器人:layout_width =FILL_PARENT
机器人:layout_height =424dp
机器人:layout_marginTop =10dp
机器人:后台=#000000
机器人:columnWidth中=120dp
机器人:horizontalSpacing =10dp
机器人:为numColumns =3
机器人:stretchMode =spacingWidthUniform
机器人:verticalSpacing =10dp/>
< / LinearLayout中>
logcat的:
01-25 17:27:48.637:E /跟踪(892):错误打开跟踪文件:没有这样的文件或目录(2)
01-25 17:27:49.558:E / AndroidRuntime(892):致命异常:主要
01-25 17:27:49.558:E / AndroidRuntime(892):显示java.lang.NullPointerException
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.ViewConfiguration.get(ViewConfiguration.java:318)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.View< INIT>(View.java:3234)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.widget.ImageView< INIT>(ImageView.java:105)
01-25 17:27:49.558:E / AndroidRuntime(892):在com.example.android.navigationdrawerexample.ImageAdapter.getView(ImageAdapter.java:35)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.widget.AbsListView.obtainView(AbsListView.java:2159)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.widget.GridView.onMeasure(GridView.java:1040)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.View.measure(View.java:15513)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.widget.LinearLayout.measureHorizontal(LinearLayout.java:1052)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.widget.LinearLayout.onMeasure(LinearLayout.java:590)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.View.measure(View.java:15513)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.View.measure(View.java:15513)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:615)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.View.measure(View.java:15513)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.View.measure(View.java:15513)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.widget.LinearLayout.measureVertical(LinearLayout.java:847)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.View.measure(View.java:15513)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
01-25 17:27:49.558:E / AndroidRuntime(892):在com.android.internal.policy.impl.PhoneWindow $ DecorView.onMeasure(PhoneWindow.java:2176)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.View.measure(View.java:15513)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1874)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1089)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1265)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.ViewRootImpl $ TraversalRunnable.run(ViewRootImpl.java:4351)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.Choreographer $ CallbackRecord.run(Choreographer.java:749)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.Choreographer.doCallbacks(Choreographer.java:562)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.Choreographer.doFrame(Choreographer.java:532)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.view.Choreographer $ FrameDisplayEventReceiver.run(Choreographer.java:735)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.os.Handler.handleCallback(Handler.java:725)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.os.Handler.dispatchMessage(Handler.java:92)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.os.Looper.loop(Looper.java:137)
01-25 17:27:49.558:E / AndroidRuntime(892):在android.app.ActivityThread.main(ActivityThread.java:5039)
01-25 17:27:49.558:E / AndroidRuntime(892):在java.lang.reflect.Method.invokeNative(本机方法)
01-25 17:27:49.558:E / AndroidRuntime(892):在java.lang.reflect.Method.invoke(Method.java:511)
01-25 17:27:49.558:E / AndroidRuntime(892):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:793)
01-25 17:27:49.558:E / AndroidRuntime(892):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
01-25 17:27:49.558:E / AndroidRuntime(892):在dalvik.system.NativeStart.main(本机方法)
做ImageAdapter初始化这样的 -
ImageAdapter我=新ImageAdapter(getActivity());
和在ImageAdapter类,作出这样的变化 -
私人活动mContext;
公共ImageAdapter(活动三)
{
mContext = C;
}
,然后在你的getView() -
的ImageView =新ImageView的(mContext);
I have downloaded code for gridview and code for navigation bar. Both codes are working fine individually but when I am trying to combine them its giving a runtime error "Unfortunately App Has Stopped".
Below is my code :
MainActivity.java
public class MainActivity extends Activity {
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
private CharSequence mDrawerTitle;
private CharSequence mTitle;
private String[] mPlanetTitles;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTitle = mDrawerTitle = getTitle();
mPlanetTitles = getResources().getStringArray(R.array.planets_array);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
// set a custom shadow that overlays the main content when the drawer opens
mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
// set up the drawer's list view with items and click listener
mDrawerList.setAdapter(new ArrayAdapter<String>(this,
R.layout.drawer_list_item, mPlanetTitles));
mDrawerList.setOnItemClickListener(new DrawerItemClickListener());
// enable ActionBar app icon to behave as action to toggle nav drawer
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
// ActionBarDrawerToggle ties together the the proper interactions
// between the sliding drawer and the action bar app icon
mDrawerToggle = new ActionBarDrawerToggle(
this, /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer image to replace 'Up' caret */
R.string.drawer_open, /* "open drawer" description for accessibility */
R.string.drawer_close /* "close drawer" description for accessibility */
) {
public void onDrawerClosed(View view) {
getActionBar().setTitle(mTitle);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(mDrawerTitle);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
selectItem(0);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.main, menu);
return super.onCreateOptionsMenu(menu);
}
/* Called whenever we call invalidateOptionsMenu() */
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
// If the nav drawer is open, hide action items related to the content view
boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
menu.findItem(R.id.action_websearch).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// The action bar home/up action should open or close the drawer.
// ActionBarDrawerToggle will take care of this.
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle action buttons
switch(item.getItemId()) {
case R.id.action_websearch:
// create intent to perform web search for this planet
Intent intent = new Intent(Intent.ACTION_WEB_SEARCH);
intent.putExtra(SearchManager.QUERY, getActionBar().getTitle());
// catch event that there's no activity to handle intent
if (intent.resolveActivity(getPackageManager()) != null) {
startActivity(intent);
} else {
Toast.makeText(this, R.string.app_not_available, Toast.LENGTH_LONG).show();
}
return true;
default:
return super.onOptionsItemSelected(item);
}
}
/* The click listner for ListView in the navigation drawer */
private class DrawerItemClickListener implements ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
selectItem(position);
}
}
private void selectItem(int position) {
// update the main content by replacing fragments
Fragment fragment = new PlanetFragment();
Bundle args = new Bundle();
args.putInt(PlanetFragment.ARG_PLANET_NUMBER, position);
fragment.setArguments(args);
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
setTitle(mPlanetTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
// Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// Pass any configuration change to the drawer toggls
mDrawerToggle.onConfigurationChanged(newConfig);
}
/**
* Fragment that appears in the "content_frame", shows a planet
*/
public static class PlanetFragment extends Fragment {
public static final String ARG_PLANET_NUMBER = "planet_number";
GridView gridview;
public PlanetFragment() {
// Empty constructor required for fragment subclasses
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_planet, container, false);
gridview=(GridView) rootView.findViewById(R.id.gridview);
ImageAdapter i= new ImageAdapter(this);
gridview.setAdapter(i);
return rootView;
}
}
ImageAdapter.java
public class ImageAdapter extends BaseAdapter {
private static final Context PlanetFragment = null;
private PlanetFragment mContext;
public ImageAdapter(PlanetFragment c) {
mContext = c;
}
public int getCount() {
return mThumbIds.length;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if (convertView == null) { // if it's not recycled, initialize some attributes
imageView = new ImageView(PlanetFragment);
imageView.setLayoutParams(new GridView.LayoutParams(150, 150));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(4, 4, 4, 4);
} else {
imageView = (ImageView) convertView;
}
imageView.setImageResource(mThumbIds[position]);
return imageView;
}
private Integer[] mThumbIds = {
R.drawable.snehalaya , R.drawable.prayas_11,
R.drawable.vs , R.drawable.adr,
R.drawable.anandvan , R.drawable.bgbb,
R.drawable.bngvn , R.drawable.dilasa ,
R.drawable.hohk , R.drawable.jivan,
R.drawable.mahan,R.drawable.vishva,
R.drawable.saraswati , R.drawable.samaj,
R.drawable.atma
};
}
activity_main.xml
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ListView
android:id="@+id/left_drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:choiceMode="singleChoice"
android:divider="@android:color/transparent"
android:dividerHeight="0dp"
android:background="#111"/>
</android.support.v4.widget.DrawerLayout>
drawer_list_item.xml
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceListItemSmall"
android:gravity="center_vertical"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:textColor="#fff"
android:background="?android:attr/activatedBackgroundIndicator"
android:minHeight="?android:attr/listPreferredItemHeightSmall"/>
fragment_planet.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="6"
android:background="#000000"
>
<GridView
android:id="@+id/gridview"
android:layout_width="fill_parent"
android:layout_height="424dp"
android:layout_marginTop="10dp"
android:background="#000000"
android:columnWidth="120dp"
android:horizontalSpacing="10dp"
android:numColumns="3"
android:stretchMode="spacingWidthUniform"
android:verticalSpacing="10dp" />
</LinearLayout>
Logcat :
01-25 17:27:48.637: E/Trace(892): error opening trace file: No such file or directory (2)
01-25 17:27:49.558: E/AndroidRuntime(892): FATAL EXCEPTION: main
01-25 17:27:49.558: E/AndroidRuntime(892): java.lang.NullPointerException
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.ViewConfiguration.get(ViewConfiguration.java:318)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.View.<init>(View.java:3234)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.widget.ImageView.<init>(ImageView.java:105)
01-25 17:27:49.558: E/AndroidRuntime(892): at com.example.android.navigationdrawerexample.ImageAdapter.getView(ImageAdapter.java:35)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.widget.AbsListView.obtainView(AbsListView.java:2159)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.widget.GridView.onMeasure(GridView.java:1040)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.View.measure(View.java:15513)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1404)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:1052)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.widget.LinearLayout.onMeasure(LinearLayout.java:590)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.View.measure(View.java:15513)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.View.measure(View.java:15513)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.support.v4.widget.DrawerLayout.onMeasure(DrawerLayout.java:615)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.View.measure(View.java:15513)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.View.measure(View.java:15513)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.widget.LinearLayout.measureVertical(LinearLayout.java:847)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.widget.LinearLayout.onMeasure(LinearLayout.java:588)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.View.measure(View.java:15513)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4827)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
01-25 17:27:49.558: E/AndroidRuntime(892): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2176)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.View.measure(View.java:15513)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1874)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1089)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1265)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:989)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4351)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.Choreographer.doCallbacks(Choreographer.java:562)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.Choreographer.doFrame(Choreographer.java:532)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.os.Handler.handleCallback(Handler.java:725)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.os.Handler.dispatchMessage(Handler.java:92)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.os.Looper.loop(Looper.java:137)
01-25 17:27:49.558: E/AndroidRuntime(892): at android.app.ActivityThread.main(ActivityThread.java:5039)
01-25 17:27:49.558: E/AndroidRuntime(892): at java.lang.reflect.Method.invokeNative(Native Method)
01-25 17:27:49.558: E/AndroidRuntime(892): at java.lang.reflect.Method.invoke(Method.java:511)
01-25 17:27:49.558: E/AndroidRuntime(892): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
01-25 17:27:49.558: E/AndroidRuntime(892): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
01-25 17:27:49.558: E/AndroidRuntime(892): at dalvik.system.NativeStart.main(Native Method)
Do ImageAdapter initialization like this-
ImageAdapter i= new ImageAdapter(getActivity());
and in ImageAdapter class, make changes like this-
private Activity mContext;
public ImageAdapter(Activity c)
{
mContext = c;
}
and then in your getView()-
imageView = new ImageView(mContext);
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