Android Tutorial for Beginners 21 # Android Gestures (Using Touch Gestures)

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<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:textAppearance="?android:attr/textAppearanceLarge" android:text="Large Text" android:id="@+id/textView" android:layout_alignParentTop="true" android:layout_marginTop="145dp" android:layout_alignParentLeft="true" android:layout_alignParentStart="true" /> </RelativeLayout>

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package com.example.programmingknowledge.gesturesapp; import android.support.v4.view.GestureDetectorCompat; import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.view.GestureDetector; import android.view.Menu; import android.view.MenuItem; import android.view.MotionEvent; import android.gesture.Gesture; import android.widget.TextView; import static android.view.GestureDetector.*; public class MainActivity extends ActionBarActivity implements OnGestureListener,OnDoubleTapListener{ private static TextView textView; private GestureDetectorCompat GestureDetect; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); textView = (TextView)findViewById(R.id.textView); GestureDetect = new GestureDetectorCompat(this,this); GestureDetect.setOnDoubleTapListener(this); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); //noinspection SimplifiableIfStatement if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } @Override public boolean onTouchEvent(MotionEvent event) { GestureDetect.onTouchEvent(event); return super.onTouchEvent(event); } @Override public boolean onSingleTapConfirmed(MotionEvent e) { textView.setText("onSingleTapConfirmed" + e.toString()); return false; } @Override public boolean onDoubleTap(MotionEvent e) { textView.setText("onDoubleTap" + e.toString()); return false; } @Override public boolean onDoubleTapEvent(MotionEvent e) { textView.setText("onDoubleTapEvent" + e.toString()); return false; } @Override public boolean onDown(MotionEvent e) { textView.setText("onDown" + e.toString()); return false; } @Override public void onShowPress(MotionEvent e) { textView.setText("onShowPress" + e.toString()); } @Override public boolean onSingleTapUp(MotionEvent e) { textView.setText("onSingleTapUp" + e.toString()); return false; } @Override public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { textView.setText("onScroll" + e1.toString() + e2.toString()); return false; } @Override public void onLongPress(MotionEvent e) { textView.setText("onLongPress"+ e.toString()); } @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { textView.setText("onFling"+ e1.toString()); return false; } }

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