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Reading Contact Bug Reslove #5

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174 changes: 116 additions & 58 deletions app/src/main/java/codepath/apps/demointroandroid/ContactListActivity.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,80 +2,138 @@

import java.util.ArrayList;

import android.Manifest;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.CursorLoader;
import android.database.Cursor;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.Toast;

public class ContactListActivity extends Activity {

ArrayList<String> names = new ArrayList<String>();

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_contact_list);
loadContacts();
populateListView();
}

private void populateListView() {
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, names);

ListView listView = (ListView) findViewById(R.id.lvContacts);
listView.setAdapter(adapter);
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(ContactListActivity.this, names.get(position), Toast.LENGTH_SHORT).show();
}
});
}

@SuppressLint("NewApi")
private void loadContacts() {
Uri allContacts = Uri.parse("content://contacts/people");
CursorLoader cursorLoader = new CursorLoader(this, allContacts,
null, // the columns to retrive
null, // the selection criteria
null, // the selection args
null // the sort order
);

Cursor c = cursorLoader.loadInBackground();
if (c.moveToFirst()) {
do {
// Get Contact ID
int idIndex = c.getColumnIndex(ContactsContract.Contacts._ID);
String contactID = c.getString(idIndex);

// Get Contact Name
int nameIndex = c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
String contactDisplayName = c.getString(nameIndex);
names.add(contactDisplayName);

Log.d("debug", contactID + ", " + contactDisplayName);
} while (c.moveToNext());
}
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_contact_list, menu);
return true;
}


boolean isPermissionGranted = false ;
ArrayList<String> names = new ArrayList<String>();
private RelativeLayout noPermission;
private static final int MY_PERMISSION_READ = 1000 ;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_contact_list);

noPermission = (RelativeLayout) findViewById(R.id.acl_no_permission);
checkPermissions();
}


private void checkPermissions(){
boolean grantedPermissions = ContextCompat.checkSelfPermission(this,
Manifest.permission.READ_CONTACTS)
== PackageManager.PERMISSION_GRANTED;

if(grantedPermissions){
loadContacts();
populateListView();
noPermission.setVisibility(View.GONE);
}
else{
ActivityCompat.requestPermissions(this,
new String[]{Manifest.permission.READ_CONTACTS},
MY_PERMISSION_READ);
}
}

private void populateListView() {
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, names);

ListView listView = (ListView) findViewById(R.id.lvContacts);
listView.setAdapter(adapter);
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(ContactListActivity.this, names.get(position), Toast.LENGTH_SHORT).show();
}
});
}

@SuppressLint("NewApi")
private void loadContacts() {
Uri allContacts = Uri.parse("content://contacts/people");
CursorLoader cursorLoader = new CursorLoader(this, allContacts,
null, // the columns to retrive
null, // the selection criteria
null, // the selection args
null // the sort order
);

Cursor c = cursorLoader.loadInBackground();
if (c.moveToFirst()) {
do {
// Get Contact ID
int idIndex = c.getColumnIndex(ContactsContract.Contacts._ID);
String contactID = c.getString(idIndex);

// Get Contact Name
int nameIndex = c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
String contactDisplayName = c.getString(nameIndex);
names.add(contactDisplayName);

Log.d("debug", contactID + ", " + contactDisplayName);
} while (c.moveToNext());
}
}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
switch (requestCode) {
case MY_PERMISSION_READ: {

// If request is cancelled, the result arrays are empty.
if (grantResults.length > 0
&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {
loadContacts();
populateListView();
noPermission.setVisibility(View.GONE);
// permission was granted, yay! Do the
// contacts-related task you need to do.
} else {

// permission denied, boo! Disable the
// functionality that depends on this permission.
Toast.makeText(ContactListActivity.this, "Permission denied to read your External storage", Toast.LENGTH_SHORT).show();
noPermission.setVisibility(View.VISIBLE);

}
return;
}

// other 'case' lines to check for other
// permissions this app might request
}
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_contact_list, menu);
return true;
}

}
120 changes: 70 additions & 50 deletions app/src/main/java/codepath/apps/demointroandroid/DemoSelector.java
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
import android.content.Intent;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
Expand All @@ -15,57 +16,75 @@
import android.widget.Toast;

public class DemoSelector extends Activity {
ExpandableListView elvChapters;
ChaptersListAdapter elaAdapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_demo_selector);
setupChaptersListView();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_demo_selector, menu);
return true;
}
private void setupChaptersListView() {
elvChapters = (ExpandableListView)findViewById(R.id.elvChapters);
elaAdapter = new ChaptersListAdapter();
elvChapters.setAdapter(elaAdapter);
elvChapters.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
String exerciseTitle = (String)elaAdapter.getChild(groupPosition, childPosition);

ExpandableListView elvChapters;
ChaptersListAdapter elaAdapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_demo_selector);
setupChaptersListView();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_demo_selector, menu);
return true;
}

private void setupChaptersListView() {
elvChapters = (ExpandableListView) findViewById(R.id.elvChapters);
elaAdapter = new ChaptersListAdapter();
elvChapters.setAdapter(elaAdapter);
elvChapters.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {

String exerciseTitle = (String)elaAdapter.getChild(groupPosition, childPosition);
Class<? extends Activity> exerciseClass = elaAdapter.getExerciseClass(groupPosition, childPosition, id);
if (exerciseClass != null) {
Toast.makeText(DemoSelector.this, exerciseTitle, Toast.LENGTH_LONG).show();
startActivity(new Intent(DemoSelector.this, exerciseClass));
Toast.makeText(DemoSelector.this, exerciseTitle, Toast.LENGTH_LONG).show();
startActivity(new Intent(DemoSelector.this, exerciseClass));
} else {
Toast.makeText(DemoSelector.this, "Exercise Not Available", Toast.LENGTH_SHORT).show();
Toast.makeText(DemoSelector.this, "Exercise Not Available", Toast.LENGTH_SHORT).show();
}
return false;
}
});
return false;
}
});

}

@Override
public boolean onMenuItemSelected(int featureId, MenuItem item) {
switch (item.getItemId()) {
case R.id.about:
Toast.makeText(this, getString(R.string.about_clicked), Toast.LENGTH_LONG).show();
return true;
case R.id.ds_help:
Toast.makeText(this, getString(R.string.help_clicked), Toast.LENGTH_LONG).show();
return true;
case R.id.settings:
Toast.makeText(this, getString(R.string.settings_clicked), Toast.LENGTH_LONG).show();
return true;
default:
return super.onMenuItemSelected(featureId, item);
}

}
private class ChaptersListAdapter extends BaseExpandableListAdapter {
}

private class ChaptersListAdapter extends BaseExpandableListAdapter {
private String[] chapters = getResources().getStringArray(R.array.chapters);
private String[][] exercises;

public ChaptersListAdapter() {
super();
exercises = new String[chapters.length][];
for (int i=0; i < exercises.length; i++) {
int resId = getResources().getIdentifier("chap" + (i+1), "array", getPackageName());
exercises[i] = getResources().getStringArray(resId);
}
super();
exercises = new String[chapters.length][];
for (int i = 0; i < exercises.length; i++) {
int resId = getResources().getIdentifier("chap" + (i + 1), "array", getPackageName());
exercises[i] = getResources().getStringArray(resId);
}
}


Expand Down Expand Up @@ -97,7 +116,7 @@ public TextView getGenericView() {
}

public View getChildView(int groupPosition, int childPosition, boolean isLastChild,
View convertView, ViewGroup parent) {
View convertView, ViewGroup parent) {
TextView textView = getGenericView();
textView.setPadding(80, 20, 20, 20);
textView.setText(getChild(groupPosition, childPosition).toString());
Expand All @@ -117,7 +136,7 @@ public long getGroupId(int groupPosition) {
}

public View getGroupView(int groupPosition, boolean isExpanded, View convertView,
ViewGroup parent) {
ViewGroup parent) {
TextView textView = getGenericView();
textView.setText(getGroup(groupPosition).toString());
return textView;
Expand All @@ -129,12 +148,13 @@ public boolean isChildSelectable(int groupPosition, int childPosition) {

public boolean hasStableIds() {
return true;
}
}

public Class<? extends Activity> getExerciseClass(int groupPosition, int childPosition, long id) {
String exerciseId = "chap" + (groupPosition + 1) + "ex" + (childPosition + 1);
return ExerciseActivityMapper.getExerciseClass(exerciseId);
String exerciseId = "chap" + (groupPosition + 1) + "ex" + (childPosition + 1);
return ExerciseActivityMapper.getExerciseClass(exerciseId);
}
}
}


}
2 changes: 1 addition & 1 deletion app/src/main/res/layout/activity_basic_views.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,7 @@
android:layout_margin="20dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:ems="10" >
android:ems="10">

<requestFocus />
</EditText>
Expand Down
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