RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(Statics.getScreenWidth() / 4, Statics.getScreenWidth() / 4); holder.imageViewThumbnail.setLayoutParams(layoutParams);
References
https://stackoverflow.com/questions/3144940/set-imageview-width-and-height-programmatically
public String getMimeType(String url) {
String type = null;
String extension = MimeTypeMap.getFileExtensionFromUrl(url);
if (extension != null) {
type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
}
return type;
}
private boolean isNetworkAvailable() {
ConnectivityManager connectivityManager
= (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
return activeNetworkInfo != null && activeNetworkInfo.isConnected();
}
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<ImageView android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:rotation="90"
android:contentDescription="@string/image_divider"
android:paddingBottom="8dp"
android:paddingTop="4dp"
android:scaleType="fitXY"
android:src="@android:drawable/divider_horizontal_textfield" />
References
https://stackoverflow.com/questions/11243314/rotate-imageview-source-from-layout-xml-file
public boolean isAppAvailable(Context context, String appName) {
PackageManager pm = context.getPackageManager();
try {
pm.getPackageInfo(appName, PackageManager.GET_ACTIVITIES);
return true;
} catch (PackageManager.NameNotFoundException e) {
return false;
}
}
final String appName = "org.telegram.messenger";
final boolean isAppInstalled = isAppAvailable(getApplicationContext(), appName);
if (isAppInstalled) {
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("https://t.me/joinchat/BSLSdUJkvhEVnDI4lbNw3g"));
startActivity(intent);
} else {
String msg = getResources().getString(R.string.telegram_not_installed);
Toast.makeText(getApplicationContext(), msg, Toast.LENGTH_LONG).show();
}
Programmatically
yourNavigationView.setItemIconTintList(null);
From XML
<android.support.design.widget.NavigationView
...
app:itemIconTint="@android:color/black"
... />
References
https://stackoverflow.com/questions/31394265/navigation-drawer-item-icon-not-showing-original-colour
https://stackoverflow.com/questions/30621561/disable-icon-colorstatelist-in-navigationview/
emailEditText.setError("Invalid Email");
emailEditText.setError(null);//removes error
Custom Icon
Drawable drawable = getDrawable(R.drawable.ic_error_outline_black_24dp);
drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
users.setError("error", drawable);
References
http://stacktips.com/tutorials/android/edittext-validation-in-android-example
https://stackoverflow.com/questions/13195852/how-can-i-remove-edittext-error-and-request-focus-in-android
build.gradle
buildscript {
repositories {
jcenter()
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.3.3'
classpath 'org.greenrobot:greendao-gradle-plugin:3.2.2'
}
}
allprojects {
repositories {
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
build.gradle
apply plugin: 'com.android.application'
apply plugin: 'org.greenrobot.greendao'
android {
compileSdkVersion 26
buildToolsVersion "26.0.0"
defaultConfig {
applicationId "ir.mhdr.a097"
minSdkVersion 17
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:26.+'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'org.greenrobot:greendao:3.2.2'
// This is only needed if you want to use encrypted databases
compile 'net.zetetic:android-database-sqlcipher:3.5.6'
testCompile 'junit:junit:4.12'
}
App.java
public class App extends Application {
public static final boolean ENCRYPTED = false;
@Override
public void onCreate() {
super.onCreate();
DaoMaster.DevOpenHelper helper = new DaoMaster.DevOpenHelper(this, ENCRYPTED ? "notes-db-encrypted" : "notes-db");
Database db = ENCRYPTED ? helper.getEncryptedWritableDb("super-secret") : helper.getWritableDb();
Statics.daoSession = new DaoMaster(db).newSession();
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="ir.mhdr.a097">
<application
android:name=".App"
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
Statice.java
public class Statics {
public static DaoSession daoSession;
}
Note.java
@Entity(indexes = {
@Index(value = "text, date DESC", unique = true)
})
public class Note {
@Id(autoincrement = true)
private Long id;
@Index(unique = true)
private String uuid;
@NotNull
private String text;
@Property(nameInDb = "date")
private Date date;
@Transient
private int tempUsageCount;
@Generated(hash = 102375063)
public Note(Long id, String uuid, @NotNull String text, Date date) {
this.id = id;
this.uuid = uuid;
this.text = text;
this.date = date;
}
@Generated(hash = 1272611929)
public Note() {
}
public Long getId() {
return this.id;
}
public void setId(Long id) {
this.id = id;
}
public String getText() {
return this.text;
}
public void setText(String text) {
this.text = text;
}
public Date getDate() {
return this.date;
}
public void setDate(Date date) {
this.date = date;
}
public String getUuid() {
return this.uuid;
}
public void setUuid(String uuid) {
this.uuid = uuid;
}
}
MainActivity.java
public class MainActivity extends AppCompatActivity {
private DaoSession daoSession;
private NoteDao noteDao;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
daoSession = Statics.daoSession;
noteDao = daoSession.getNoteDao();
Note note = new Note();
note.setUuid(UUID.randomUUID().toString());
note.setDate(new Date());
note.setText("Hello World");
noteDao.save(note);
}
}
if using Kotlin
android {
...
sourceSets {
main.java.srcDirs += 'build/generated/source/greendao'
}
}
References
http://greenrobot.org/greendao/documentation/
https://github.com/mhdr/AndroidSamples/tree/master/097
https://github.com/greenrobot/greenDAO/issues/395
build.gradle
compile 'com.android.support:design:<latest-library-version>'
Create a class that extends BottomSheetDialogFragment , inflated with the layout that will be used as the content of the modal dialog.
public class BottomSheetFragment extends BottomSheetDialogFragment {
public BottomSheetFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_bottom_sheet, container, false);
}
}
Create an instance of the modal bottom sheet and show it with the show method, passing the FragmentManager and a string tag as parameters.
CustomBottomSheetDialog bottomSheetDialog = CustomBottomSheetDialog.getInstance(); bottomSheetDialog.show(getSupportFragmentManager(), "Custom Bottom Sheet");
References
https://github.com/mhdr/AndroidSamples/tree/master/096
https://mayojava.github.io/android/bottom-sheets-android/
public void calculateAndShow(boolean swapRanges) {
float value = 24;
UserBL userBL = new UserBL(getContext());
User user = userBL.getActiveUser();
BMI bmi = new BMI(user.getLatestHeight(), user.getLatestWeight());
value = Float.parseFloat(String.format(Locale.US, "%.2f", bmi.calculate()));
String name = user.getName();
String age = String.valueOf(calculateAge(user.getBirthdate()));
String height = String.valueOf(user.getLatestHeight());
textViewProfileInfoAge.setText(String.format(Locale.US, "%s سال", age));
textViewProfileInfoName.setText(String.format(Locale.US, "%s", name));
textViewProfileInfoHeight.setText(String.format(Locale.US, "%s سانتی متر", height));
gauge.setHighValue(value, 12, 44);
textViewBMI.setText(String.valueOf(value));
textViewCurrentWeight.setText(String.format(Locale.US, "%s کیلوگرم", user.getLatestWeight()));
FragmentManager fragmentManager = getFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
SharedPreferences sharedPreferences = getContext().getSharedPreferences("bmi", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
if (!swapRanges) {
if (sharedPreferences.getInt("bmi_range", -1) == -1) {
BmiRangeFragment bmiRangeFragment = new BmiRangeFragment();
fragmentTransaction.replace(R.id.linearLayoutRangeContainer, bmiRangeFragment);
} else if (sharedPreferences.getInt("bmi_range", -1) == 1) {
BmiRangeFragment bmiRangeFragment = new BmiRangeFragment();
fragmentTransaction.replace(R.id.linearLayoutRangeContainer, bmiRangeFragment);
} else if (sharedPreferences.getInt("bmi_range", -1) == 2) {
WeightRangeFragment weightRangeFragment = new WeightRangeFragment();
Bundle bundle = new Bundle();
bundle.putSerializable("bmi", bmi);
weightRangeFragment.setArguments(bundle);
fragmentTransaction.replace(R.id.linearLayoutRangeContainer, weightRangeFragment);
}
fragmentTransaction.commit();
} else {
Fragment previousFragment = fragmentManager.findFragmentById(R.id.linearLayoutRangeContainer);
if (previousFragment instanceof WeightRangeFragment) {
BmiRangeFragment bmiRangeFragment = new BmiRangeFragment();
fragmentTransaction.setCustomAnimations(R.anim.scale_up, R.anim.scale_down)
.replace(R.id.linearLayoutRangeContainer, bmiRangeFragment);
editor.putInt("bmi_range", 1);
} else if (previousFragment instanceof BmiRangeFragment) {
WeightRangeFragment weightRangeFragment = new WeightRangeFragment();
Bundle bundle = new Bundle();
bundle.putSerializable("bmi", bmi);
weightRangeFragment.setArguments(bundle);
fragmentTransaction.setCustomAnimations(R.anim.scale_up, R.anim.scale_down)
.replace(R.id.linearLayoutRangeContainer, weightRangeFragment);
editor.putInt("bmi_range", 2);
}
fragmentTransaction.commit();
editor.apply();
}
}
References
https://www.tutorialspoint.com/android/android_shared_preferences.htm