Android手势onFling无法正常工作
我的onFling手势代码完美运行。 然后我添加了一些if语句，并在Activity代码中做了一些小的其他调整。 Plus在另一个类PassGen中写了几个新的方法。 以及一些代码重新排序。
除了被他们调用之外，我没有添加手势接口，但是现在onFling手势甚至不会触发。 双击手势仍然有效。
日志中没有错误。
以下是来自Activity的代码
package com.mystraldesign.memorable;
import java.io.IOException;
import android.app.Activity;
import android.content.Context;
import android.graphics.Typeface;
import android.os.Bundle;
import android.text.ClipboardManager;
import android.view.GestureDetector;
import android.view.GestureDetector.OnDoubleTapListener;
import android.view.MotionEvent;
import android.view.Window;
import android.widget.TextView;
import android.widget.Toast;
import com.mystraldesign.memorable.PassGen;
public class MemorableActivity extends Activity implements android.view.GestureDetector.OnGestureListener,OnDoubleTapListener
{
//Define text views
private TextView textView1;
private TextView textView2;
private TextView textView3;
private TextView textView4;
private TextView textView5;
//Previous password holder
private String prevPass;
//Gesture Detectors
private GestureDetector gTap;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
gTap = new GestureDetector(this,(android.view.GestureDetector.OnGestureListener) this);
//Remove title bar
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.main);
//Define textView
textView1 = (TextView) findViewById(R.id.textView1);
textView2 = (TextView) findViewById(R.id.textView2);
textView3 = (TextView) findViewById(R.id.textView3);
textView4 = (TextView) findViewById(R.id.textView4);
textView5 = (TextView) findViewById(R.id.textView5);
//Load font file
Typeface type = Typeface.createFromAsset(getAssets(),"fonts/optima.ttf");
//Set various textViews to font
textView1.setTypeface(type);
textView2.setTypeface(type);
textView3.setTypeface(type);
textView4.setTypeface(type);
prevPass = "Memorable";
}
//Password call
public void newPass()
{
//Store Return
String retn = null;
PassGen passWord = new PassGen();
//Generate password
try
{
retn = passWord.passwordGen(this);
}
catch (IOException e)
{
//Message about Error
Context context = getApplicationContext();
CharSequence text = "Ooops Something Went Wrong!";
int duration = Toast.LENGTH_SHORT;
//Display message
Toast toast = Toast.makeText(context, text, duration);
toast.show();
textView1.setText("Memorable");
e.printStackTrace();
}
//Update prevpass
prevPass = textView1.getText().toString();
textView1.setText(retn);
}
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY)
{
if(velocityX == 0.0 && velocityY > 0.0001)
{
//Call new password generation or generate random if set
if(textView4.getText() == "Memorable")
{
newPass();
}
else if(textView4.getText() == "Random")
{
//create new password method
PassGen pass = new PassGen();
//Set password
textView4.setText(pass.randomPassword());
}
}
else if(velocityY == 0 && velocityX > 0.0001)
{
if(textView4.getText() == "Memorable")
{
textView4.setText("Random");
}
else if(textView4.getText() == "Random")
{
textView4.setText("Memorable");
}
else if(velocityX == 0.0 && velocityY > -0.0001)
{
textView4.setText(prevPass);
}
textView5.setText("VelocityX: " + velocityX + " VelocityY: " + velocityY);
}
return false;
}
//Method to copy password
public boolean onDoubleTapEvent(MotionEvent e) {
//clipboard shite
ClipboardManager clipboard = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
clipboard.setText(textView1.getText());
//Message about coping
Context context = getApplicationContext();
CharSequence text = "Password has been copied to clipboard.";
int duration = Toast.LENGTH_SHORT;
//Display message
Toast toast = Toast.makeText(context, text, duration);
toast.show();
return false;
}
/*--------------------------------------*/
/*Additional geasture code below. */
/* */
/*J. Krawczyk 3/5/12*/
/*--------------------------------------*/
public boolean onTouchEvent(MotionEvent me){
this.gTap.onTouchEvent(me);
return super.onTouchEvent(me);
}
public boolean onDown(MotionEvent e) {
return false;
}
public void onLongPress(MotionEvent e)
{
}
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
float distanceY) {
return false;
}
public void onShowPress(MotionEvent e) {
}
public boolean onSingleTapUp(MotionEvent e) {
return false;
}
//Method to copy password - Depreciated
public boolean onDoubleTap(MotionEvent e) {
return false;
}
public boolean onSingleTapConfirmed(MotionEvent e) {
return false;
}
}
编辑：
我将onTouchEvent移动到了onCreate下面，现在它触发onFling函数，但if语句不做任何事情，尽管velocityX和velocityY分别为1410.8032和0.0，它们应该触发一个。 它也没有检测到正确的，向上或向下的。 只剩下了
原来是代码顺序和if语句。 我需要移动onFling回落到下面onTouchEvent ，添加额外的（）进入if语句来隔离&&的