我正在尝试在Android中的导航抽屉中添加图标。我的主要
中有以下代码public class MainActivity extends ActionBarActivity {
private ListView mDrawerList;
private DrawerLayout mDrawerLayout;
private ArrayAdapter<String> mAdapter;
private ActionBarDrawerToggle mDrawerToggle;
private String mActivityTitle;
private myAdapter MyAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mDrawerList = (ListView)findViewById(R.id.navList);mDrawerLayout = (DrawerLayout)findViewById(R.id.drawer_layout);
mActivityTitle = getTitle().toString();
addDrawerItems();
setupDrawer();
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
}
private void addDrawerItems() {
String[] osArray = {"Math", "Physics", "Chemistry"};
MyAdapter = new myAdapter(this);
mDrawerList.setAdapter(MyAdapter);
mDrawerList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
switch(position) {
case 0:
Intent a = new Intent(MainActivity.this, MathActivity.class);
startActivity(a);
break;
case 1:
Intent b = new Intent(MainActivity.this, PhysicsActivity.class);
startActivity(b);
break;
case 2:
Intent c = new Intent(MainActivity.this, ChemistryActivity.class);
startActivity(c);
break;
default:
}
}
});
}
private void setupDrawer() {
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.string.drawer_open, R.string.drawer_close) {
/** Called when a drawer has settled in a completely open state. */
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
getSupportActionBar().setTitle("Navigation!");
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
/** Called when a drawer has settled in a completely closed state. */
public void onDrawerClosed(View view) {
super.onDrawerClosed(view);
getSupportActionBar().setTitle(mActivityTitle);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
};
mDrawerToggle.setDrawerIndicatorEnabled(true);
mDrawerLayout.setDrawerListener(mDrawerToggle);
}
@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);
mDrawerToggle.onConfigurationChanged(newConfig);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
// Activate the navigation drawer toggle
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
return super.onOptionsItemSelected(item);
}
class myAdapter extends BaseAdapter {
private Context context;
String SchoolCategories[];
int[] images = {R.drawable.math_icon,R.drawable.physics_icon,R.drawable.chemistry_icon};
public myAdapter(Context context){
this.context = context;
SchoolCategories = context.getResources().getStringArray(R.array.school);
}
@Override
public int getCount() {
return SchoolCategories.length;
}
@Override
public Object getItem(int position) {
return SchoolCategories[position];
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = null;
if(convertView == null){
LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.custom_row, parent, false);
}
else{
row =convertView;
}
TextView titleTextView =(TextView) row.findViewById(R.id.textViewRow1);
ImageView titleImageView = (ImageView) row.findViewById(R.id.imageViewRow1);
titleTextView.setText(SchoolCategories[position]);
titleImageView.setImageResource(images[position]);
return row;
}
}
}
以下XML布局文件：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/math_icon"
android:id="@+id/imageViewRow1"
/>
<TextView
android:layout_margin="8dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="Large Text"
android:id="@+id/textViewRow1"
/>
</LinearLayout>
我很简单，只是想在导航抽屉中添加图标，但这不起作用，我不确定出了什么问题。该应用程序刚刚关闭。非常感谢所有的帮助！
这是我的log-cat：
05-25 12:27:33.053 3909-3909/oscarorellana.nowwetryitmyway.physicsproject E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: oscarorellana.nowwetryitmyway.physicsproject, PID: 3909
android.content.ActivityNotFoundException: Unable to find explicit activity class {oscarorellana.nowwetryitmyway.physicsproject/oscarorellana.nowwetryitmyway.physicsproject.MathActivity}; have you declared this activity in your AndroidManifest.xml?
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1761)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1485)
at android.app.Activity.startActivityForResult(Activity.java:3736)
at android.app.Activity.startActivityForResult(Activity.java:3697)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:820)
at android.app.Activity.startActivity(Activity.java:4007)
at android.app.Activity.startActivity(Activity.java:3975)
at oscarorellana.nowwetryitmyway.physicsproject.MainActivity$1.onItemClick(MainActivity.java:57)
答案 0 :(得分：0)
通过更改此行解决了这个问题：
inflater.inflate(R.layout.custom_row, parent, false);
到这一行：
row = inflater.inflate(R.layout.custom_row, parent, false);