我有一个日历，所以我必须在7行52行中分配365天。每一天都有不同的文字。生成一个操作时正在执行许多操作。因此滚动它们是如此缓慢而缓慢。如何解决？
我的网格课的父母：
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
int nr = calendar.get(Calendar.DAY_OF_YEAR);
setContentView(R.layout.activity_main);
calendar.setTime(new Date());
int year = calendar.get(Calendar.YEAR);
boolean p = ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0);
calendar.set(Calendar.DAY_OF_YEAR, 1);
int before = calendar.get(Calendar.DAY_OF_WEEK)-2;
calendar.set(Calendar.DAY_OF_YEAR, 1);
calendar.add(Calendar.YEAR, 1);
calendar.add(Calendar.DAY_OF_YEAR, -1);
int after = calendar.get(Calendar.DAY_OF_WEEK)-2;
final GridView gridView = (GridView) findViewById(R.id.main_grid_calendar);
gridView.setAdapter(new DayAdapter(this, new String[(p?366:365)], before, after));
}
}
我的适配器类：
public class DayAdapter extends ArrayAdapter<String> {
private Context context;
private Calendar calendar = Calendar.getInstance();
private final int today = calendar.get(Calendar.DAY_OF_YEAR), before, after, count;
public DayAdapter(Context context, String[] values, int before, int after) {
super(context, R.layout.calendar_day, new String[before + values.length + after]);
this.context = context;
this.before = before;
this.after = after;
this.count = before + values.length + after;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View day = inflater.inflate(R.layout.calendar_day, parent, false);
final TextView date = (TextView) day.findViewById(R.id.dayitem_text_number);
final TextView holiday = (TextView) day.findViewById(R.id.dayitem_text_holiday);
final TextView click = (TextView) day.findViewById(R.id.dayitem_text_more);
SharedPreferences theme = Data.getPreferences(context, Data.Prefs.THEME);
Data.AppColorSet color = Data.getColors(Integer.parseInt(theme.getString(Data.appThemeSetings, "1")));
date.setTextColor(color.foreground);
holiday.setTextColor(color.foreground);
click.setTextColor(color.foreground);
day.setBackgroundColor(color.background);
calendar.set(Calendar.DAY_OF_YEAR, position+1-before);
if (position<before) {
day.setBackgroundColor(Color.GRAY);
} else if (position>=count-after) {
day.setBackgroundColor(Color.GRAY);
} else {
day.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(context, DayActivity.class);
intent.putExtra("id", position-3);
intent.putExtra("from", "calendar");
context.startActivity(intent);
}
});
}
String d = "" + calendar.get(Calendar.DAY_OF_MONTH);
String m = "" + (1 + calendar.get(Calendar.MONTH));
if (Integer.parseInt(d)<10) {
d = "0" + d;
}
if (Integer.parseInt(m)<10) {
m = "0" + m;
}
if (this.today==position-2) {
RelativeLayout layout = (RelativeLayout) day.findViewById(R.id.dayitem_relative_main);
layout.setBackgroundColor(color.dark?Color.rgb(55, 0, 0):Color.rgb(255, 200, 200));
}
final String today = d + "." + m;
date.setText(today);
String text = HolidayCalendar.getInstance(context).getTexts(today).get(0);
String[] arr = text.split(" ");
String result = "";
final int words = 4;
boolean full = false;
if (arr.length<=words) {
result = text;
full = true;
} else {
for (int i = 0; i<words; i++) {
result += " " + arr[i];
}
result += "...";
}
int number = HolidayCalendar.getInstance(context).getTexts(today).size() - (full?1:0);
if (number != 0) {
click.setText(number + " " + context.getResources().getString(R.string.see_more));
}
holiday.setText(result);
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
day.setLayoutParams(new AbsListView.LayoutParams(width/7, width/4));
return day;
}
}
我父母的网格布局：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/main_relative_main"
tools:context="${relativePackage}.${activityClass}" >
<GridView
android:id="@+id/main_grid_calendar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@+id/main_adview_bottom_dark"
android:background="#000000"
android:horizontalSpacing="1dp"
android:numColumns="7"
android:verticalSpacing="1dp" >
</GridView>
</RelativeLayout>
我的适配器布局：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/dayitem_relative_main"
android:layout_width="match_parent"
android:layout_height="200dp"
android:background="#FFFFFF"
android:gravity="center" >
<TextView
android:id="@+id/dayitem_text_number"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="8sp" />
<TextView
android:id="@+id/dayitem_text_more"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="2dp"
android:gravity="center_horizontal"
android:textSize="8sp" />
<TextView
android:id="@+id/dayitem_text_holiday"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:layout_marginBottom="15dp"
android:gravity="center|center"
android:textSize="10sp" />
</RelativeLayout>
编辑：
ViewHolder帮助了我！谢谢！
最佳答案
显示列表和网格时最好的简便方法，即轻松地提高性能的方法是使用新的RecyclerView，在您的情况下，请使用GridLayoutManager。这将提高您的性能，而无需修改大量代码。查看有关如何实现它的一些文档here。
除此之外，您遭受的滞后还来自在getView方法中使用findViewById的事实，这是重复多次的缓慢操作。避免一直搜索视图的最佳实践是使用ViewHolder模式。查看此link中的第二部分。