如何使用onSaveInstanceState保存复选框状态 [英] How to save checkboxes state with onSaveInstanceState
本文介绍了如何使用onSaveInstanceState保存复选框状态的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个警告"对话框，其中显示几个复选框(确切地说是5个).复选框过滤出5张在我的地图上显示的标记列表，这些标记按小时间隔分组.除了不知道如何在onSaveInstanceState中编写代码这一事实之外，我已经设法使所有工作均正常进行，以便在屏幕旋转后可以保留复选框的值.这是我认为与问题相关的代码部分.预先感谢您的帮助！
I have an Alert Dialog that displays a couple of checkboxes(5 to be more exact). The check boxes filter 5 lists of markers that are displayed on my map, markers that are grouped in hour intervals. I have managed to make everything work except the fact that I do not know how I should write the code in onSaveInstanceState so that the checkboxes values will be kept after a screen rotation. Here is the part of the code that I think it's relevant for the question. Thanks in advance for any help!
public void filterTheMarkers(View view) {
if (dialog == null) {
AlertDialog.Builder builder;
builder = new AlertDialog.Builder(this);
LayoutInflater inflater = this.getLayoutInflater();
@SuppressLint("InflateParams") View checkBoxView = inflater.inflate(R.layout.markers_filtering, null);
builder.setView(checkBoxView);
cbAllDay = (CheckBox) checkBoxView.findViewById(R.id.checkBox1);
cbBefore12 = (CheckBox) checkBoxView.findViewById(R.id.checkBox2);
cbBetween1216 = (CheckBox) checkBoxView.findViewById(R.id.checkBox3);
cbBetween1620 = (CheckBox) checkBoxView.findViewById(R.id.checkBox4);
ccbAfter20 = (CheckBox) checkBoxView.findViewById(R.id.checkBox5);
dialog = builder.create();
}
dialog.show();
}
public void displaySelectedMarkers(View view) {
dialog.dismiss();
Log.i("TAG", "All Day " + cbAllDay.isChecked() + " Before 12 " + cbBefore12.isChecked() + " Between 12-16 " + cbBetween1216.isChecked() + " Between 16-20" + cbBetween1620.isChecked() + " After 20 " + ccbAfter20.isChecked());
//according these check boxes status execute your code to show/hide markers
if (cbAllDay.isChecked() && cbBefore12.isChecked() && cbBetween1216.isChecked() && cbBetween1620.isChecked() && ccbAfter20.isChecked()) {
// show all markers
for (Marker marker : allDayList) {
marker.setVisible(true);
}
for (Marker marker : before12List) {
marker.setVisible(true);
}
for (Marker marker : between1216List) {
marker.setVisible(true);
}
for (Marker marker : between1620List) {
marker.setVisible(true);
}
for (Marker marker : after20List) {
marker.setVisible(true);
}
} else if (cbAllDay.isChecked() && !cbBefore12.isChecked() && !cbBetween1216.isChecked() && !cbBetween1620.isChecked() && !ccbAfter20.isChecked()) {
// show only All Day Markers
for (Marker marker : allDayList) {
marker.setVisible(true);
}
for (Marker marker : before12List) {
marker.setVisible(false);
}
for (Marker marker : between1216List) {
marker.setVisible(false);
}
for (Marker marker : between1620List) {
marker.setVisible(false);
}
for (Marker marker : after20List) {
marker.setVisible(false);
} // and it goes like this forever covering every possible interval
.
.
.
}
}
public void doNothing(View view) {
dialog.dismiss();
}
更新
..
Boolean keepMarkerFiltersCB1;
Boolean keepMarkerFiltersCB2;
Boolean keepMarkerFiltersCB3;
Boolean keepMarkerFiltersCB4;
Boolean keepMarkerFiltersCB5;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
mapFragment.getMapAsync(this);
if (savedInstanceState == null){
mapTypeSelected = GoogleMap.MAP_TYPE_NORMAL;
mSetCameraPosition = true;
mapFragment.setRetainInstance(true);
initialMarkers = true;
} else {
mapTypeSelected = savedInstanceState.getInt("the_map_type", GoogleMap.MAP_TYPE_NORMAL);
mSetCameraPosition = false;
initialMarkers = false;
keepMarkerFiltersCB1 = savedInstanceState.getBoolean("checkBox1");
keepMarkerFiltersCB2 = savedInstanceState.getBoolean("checkBox2");
keepMarkerFiltersCB3 = savedInstanceState.getBoolean("checkBox3");
keepMarkerFiltersCB4 = savedInstanceState.getBoolean("checkBox4");
keepMarkerFiltersCB5 = savedInstanceState.getBoolean("checkBox5");
}
public void filterTheMarkers(View view) {
if (dialog == null) {
AlertDialog.Builder builder;
builder = new AlertDialog.Builder(this);
LayoutInflater inflater = this.getLayoutInflater();
@SuppressLint("InflateParams") View checkBoxView = inflater.inflate(R.layout.markers_filtering, null);
builder.setView(checkBoxView);
cbAllDay = (CheckBox) checkBoxView.findViewById(R.id.checkBox1);
cbBefore12 = (CheckBox) checkBoxView.findViewById(R.id.checkBox2);
cbBetween1216 = (CheckBox) checkBoxView.findViewById(R.id.checkBox3);
cbBetween1620 = (CheckBox) checkBoxView.findViewById(R.id.checkBox4);
ccbAfter20 = (CheckBox) checkBoxView.findViewById(R.id.checkBox5);
keepMarkerFiltersCB1 = cbAllDay.isChecked();
keepMarkerFiltersCB2 = cbBefore12.isChecked();
keepMarkerFiltersCB3 = cbBetween1216.isChecked();
keepMarkerFiltersCB4 = cbBetween1620.isChecked();
keepMarkerFiltersCB5 = ccbAfter20.isChecked();
dialog = builder.create();
}
dialog.show();
}
public void displaySelectedMarkers(View view) {
dialog.dismiss();
Log.i("TAG", "All Day " + cbAllDay.isChecked() + " Before 12 " + cbBefore12.isChecked() + " Between 12-16 " + cbBetween1216.isChecked() + " Between 16-20" + cbBetween1620.isChecked() + " After 20 " + ccbAfter20.isChecked());
//according these check boxes status execute your code to show/hide markers
if (cbAllDay.isChecked() && cbBefore12.isChecked() && cbBetween1216.isChecked() && cbBetween1620.isChecked() && ccbAfter20.isChecked()) {
// show all markers
for (Marker marker : allDayList) {
marker.setVisible(true);
}
for (Marker marker : before12List) {
marker.setVisible(true);
}
for (Marker marker : between1216List) {
marker.setVisible(true);
}
for (Marker marker : between1620List) {
marker.setVisible(true);
}
for (Marker marker : after20List) {
marker.setVisible(true);
}
} else if (cbAllDay.isChecked() && !cbBefore12.isChecked() && !cbBetween1216.isChecked() && !cbBetween1620.isChecked() && !ccbAfter20.isChecked()) {
// show only All Day Markers
for (Marker marker : allDayList) {
marker.setVisible(true);
}
for (Marker marker : before12List) {
marker.setVisible(false);
}
for (Marker marker : between1216List) {
marker.setVisible(false);
}
for (Marker marker : between1620List) {
marker.setVisible(false);
}
for (Marker marker : after20List) {
marker.setVisible(false);
}
} else if
.
.
.
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putInt("the_map_type", mapTypeSelected);
outState.putBoolean("checkBox1", keepMarkerFiltersCB1);
outState.putBoolean("checkBox2", keepMarkerFiltersCB2);
outState.putBoolean("checkBox3", keepMarkerFiltersCB3);
outState.putBoolean("checkBox4", keepMarkerFiltersCB4);
outState.putBoolean("checkbox5", keepMarkerFiltersCB5);
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
savedInstanceState.get("the_map_type");
savedInstanceState.get("checkBox1");
savedInstanceState.get("checkBox2");
savedInstanceState.get("checkBox3");
savedInstanceState.get("checkBox4");
savedInstanceState.get("checkBox5");
}
private void initialLocation(double lat, double lng, float zoom){
LatLng latLng = new LatLng(lat, lng );
CameraUpdate update = CameraUpdateFactory.newLatLngZoom(latLng, zoom);
mMap.moveCamera(update);
推荐答案
您可以尝试以下方法.
@Override
public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) {
super.onSaveInstanceState(outState, outPersistentState);
outState.putBoolean("checkbox1",true);
}
这篇关于如何使用onSaveInstanceState保存复选框状态的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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