Android 使用 Notification 頂部訊息 (含影片教學與專案) [android Notification top message]

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private Context cntContext; private static final String NOTIFICATION_CHANNEL_ID = "0920"; public clsNotification(Context pcntContext) { cntContext = pcntContext; }

Android 使用 GestureDetectorCompat 點擊資訊 (含影片教學與專案) [android GestureDetectorCompat screen click info]

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public class MainActivity extends AppCompatActivity implements GestureDetector.OnGestureListener, GestureDetector.OnDoubleTapListener { TextView txvnInfo; GestureDetectorCompat gdcInfo; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); txvnInfo = findViewById(R.id.txvInfo); gdcInfo = new GestureDetectorCompat(this,this); gdcInfo.setOnDoubleTapListener(this); }

android studio 畫面淡出淡入的切換效果 (含影片教學與專案) [android activity fade transition effect (With Video and Project)]

Activity 1 淡出的切換效果 (intent_fade_out.xml)

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<?xml version="1.0" encoding="utf-8"?> <alpha xmlns:android="http://schemas.android.com/apk/res/android" android:interpolator="@android:anim/accelerate_interpolator" android:fromAlpha="1.0" android:toAlpha="0.0" android:fillAfter="true" android:duration="500" />

Activity 2 淡入的切換效果 (intent_fade_in.xml)