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package com.mapbox.mapboxsdk.testapp.activity.offline;
import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.mapbox.mapboxsdk.offline.OfflineManager;
import com.mapbox.mapboxsdk.offline.OfflineRegion;
import com.mapbox.mapboxsdk.testapp.R;
import com.mapbox.mapboxsdk.testapp.utils.OfflineUtils;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/**
* Test activity showing integration of deleting an OfflineRegion.
*/
public class DeleteRegionActivity extends AppCompatActivity implements AdapterView.OnItemClickListener {
private OfflineRegionAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_offline_region_delete);
ListView listView = (ListView) findViewById(R.id.listView);
listView.setAdapter(adapter = new OfflineRegionAdapter(this));
listView.setEmptyView(findViewById(android.R.id.empty));
listView.setOnItemClickListener(this);
}
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
final OfflineRegion region = adapter.getItem(position);
String metadata = OfflineUtils.convertRegionName(region.getMetadata());
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Delete region");
final TextView input = new TextView(this);
input.setText(metadata);
builder.setView(input);
builder.setPositiveButton("OK", (dialog, which) -> delete(region));
builder.setNegativeButton("Cancel", (dialog, which) -> dialog.cancel());
builder.show();
}
private void delete(OfflineRegion region) {
region.delete(new OfflineRegion.OfflineRegionDeleteCallback() {
@Override
public void onDelete() {
Toast.makeText(
DeleteRegionActivity.this,
"Region deleted",
Toast.LENGTH_SHORT
).show();
loadOfflineRegions();
}
@Override
public void onError(String error) {
Toast.makeText(
DeleteRegionActivity.this,
"Region deletion failed with " + error,
Toast.LENGTH_LONG
).show();
}
});
}
@Override
protected void onStart() {
super.onStart();
loadOfflineRegions();
}
private void loadOfflineRegions() {
OfflineManager.getInstance(this).listOfflineRegions(new OfflineManager.ListOfflineRegionsCallback() {
@Override
public void onList(OfflineRegion[] offlineRegions) {
if (offlineRegions != null && offlineRegions.length > 0) {
adapter.setOfflineRegions(Arrays.asList(offlineRegions));
}
}
@Override
public void onError(String error) {
Toast.makeText(DeleteRegionActivity.this, "Error loading regions " + error, Toast.LENGTH_LONG).show();
}
});
}
private static class OfflineRegionAdapter extends BaseAdapter {
private Context context;
private List<OfflineRegion> offlineRegions;
OfflineRegionAdapter(Context ctx) {
context = ctx;
offlineRegions = new ArrayList<>();
}
void setOfflineRegions(List<OfflineRegion> offlineRegions) {
this.offlineRegions = offlineRegions;
notifyDataSetChanged();
}
@Override
public int getCount() {
return offlineRegions.size();
}
@Override
public OfflineRegion getItem(int position) {
return offlineRegions.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = LayoutInflater.from(context).inflate(android.R.layout.simple_list_item_1, parent, false);
holder.text = (TextView) convertView.findViewById(android.R.id.text1);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.text.setText(OfflineUtils.convertRegionName(getItem(position).getMetadata()));
return convertView;
}
static class ViewHolder {
TextView text;
}
}
}
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