我过去常常使用操作栏图标,但是当我在API 21上执行某些操作时,没有显示任何图标我的意思是只有3个点而不是我想要的图标而我是api 14它正在工作:
菜单:
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.example.gweltaz.idee.Historique">
<item android:id="@+id/action_settings" android:title="@string/action_settings"
android:orderInCategory="100"
android:icon="@drawable/sup"
app:showAsAction="ifRoom" />
活动
@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_historique, 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) {
db.execSQL("DELETE FROM story2");
return true;
}
return super.onOptionsItemSelected(item);
}
答案 0 :(得分:0)
尝试更改:
app:showAsAction="ifRoom" />
到
app:showAsAction="always"/>