6402 update offline metadata android (#6456)

* [android] - update offline metadata jni integration

* extract offline utils for reuse

* add test activity for update metadata

* fix requested signature changes

1 files changed, 186 insertions, 0 deletions

diff --git a/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/offline/UpdateMetadataActivity.java b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/offline/UpdateMetadataActivity.java
new file mode 100644
index 0000000000..0530f1c157
--- /dev/null
+++ b/platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/offline/UpdateMetadataActivity.java
@@ -0,0 +1,186 @@
+package com.mapbox.mapboxsdk.testapp.activity.offline;
+
+import android.content.Context;
+import android.content.DialogInterface;
+import android.os.Bundle;
+import android.support.v7.app.ActionBar;
+import android.support.v7.app.AlertDialog;
+import android.support.v7.app.AppCompatActivity;
+import android.support.v7.widget.Toolbar;
+import android.text.InputType;
+import android.view.LayoutInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.BaseAdapter;
+import android.widget.EditText;
+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 updating metadata of an OfflineRegion.
+ */
+public class UpdateMetadataActivity extends AppCompatActivity implements AdapterView.OnItemClickListener {
+
+    private OfflineRegionMetadataAdapter adapter;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_metadata_update);
+
+        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+
+        ActionBar actionBar = getSupportActionBar();
+        if (actionBar != null) {
+            actionBar.setDisplayHomeAsUpEnabled(true);
+            actionBar.setDisplayShowHomeEnabled(true);
+        }
+
+        ListView listView = (ListView) findViewById(R.id.listView);
+        listView.setAdapter(adapter = new OfflineRegionMetadataAdapter(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("Rename metadata");
+
+        final EditText input = new EditText(this);
+        input.setText(metadata);
+        input.setInputType(InputType.TYPE_CLASS_TEXT);
+        input.setSelection(metadata.length());
+        builder.setView(input);
+
+        builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+                updateMetadata(region, OfflineUtils.convertRegionName(input.getText().toString()));
+            }
+        });
+        builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
+            @Override
+            public void onClick(DialogInterface dialog, int which) {
+                dialog.cancel();
+            }
+        });
+
+        builder.show();
+    }
+
+    private void updateMetadata(OfflineRegion region, byte[] metadata) {
+        region.updateMetadata(metadata, new OfflineRegion.OfflineRegionUpdateMetadataCallback() {
+            @Override
+            public void onUpdate(byte[] metadata) {
+                adapter.notifyDataSetChanged();
+            }
+
+            @Override
+            public void onError(String error) {
+                Toast.makeText(UpdateMetadataActivity.this, "Region metadata update 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(UpdateMetadataActivity.this, "Error loading regions " + error, Toast.LENGTH_LONG).show();
+            }
+        });
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        switch (item.getItemId()) {
+            case android.R.id.home:
+                onBackPressed();
+                return true;
+            default:
+                return super.onOptionsItemSelected(item);
+        }
+    }
+
+    private static class OfflineRegionMetadataAdapter extends BaseAdapter {
+
+        private Context context;
+        private List<OfflineRegion> offlineRegions;
+
+        OfflineRegionMetadataAdapter(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;
+        }
+    }
+}