【移動(dòng)應(yīng)用開(kāi)發(fā)技術(shù)】Android中怎么檢測(cè)屏幕手勢(shì)

【移動(dòng)應(yīng)用開(kāi)發(fā)技術(shù)】Android中怎么檢測(cè)屏幕手勢(shì)

Android中怎么檢測(cè)屏幕手勢(shì)，針對(duì)這個(gè)問(wèn)題，這篇文章詳細(xì)介紹了相對(duì)應(yīng)的分析和解答，希望可以幫助更多想解決這個(gè)問(wèn)題的小伙伴找到更簡(jiǎn)單易行的方法。layout/activity_gesture_detector.xml界面布局代碼如下：<LinearLayout

xmlns:android="/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

android:paddingTop="10dp">

<TextView

android:id="@+id/tv_gesture"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:gravity="center"

android:text="這里查看手勢(shì)結(jié)果"

android:textColor="@color/black"

android:textSize="17sp"

/>

</LinearLayout>GestureDetectorActivity.java邏輯代碼如下：package

com.fukaimei.gesturedetector;

import

android.os.Bundle;

import

android.support.v7.app.AppCompatActivity;

import

android.view.GestureDetector;

import

android.view.MotionEvent;

import

android.widget.TextView;

import

com.fukaimei.gesturedetector.util.DateUtil;

public

class

GestureDetectorActivity

extends

AppCompatActivity

{

private

TextView

tv_gesture;

private

GestureDetector

mGesture;

private

String

desc

=

"";

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_gesture_detector);

tv_gesture

=

(TextView)

findViewById(R.id.tv_gesture);

mGesture

=

new

GestureDetector(this,

new

MyGestureListener());

}

public

boolean

dispatchTouchEvent(MotionEvent

event)

{

mGesture.onTouchEvent(event);

return

true;

}

final

class

MyGestureListener

implements

GestureDetector.OnGestureListener

{

@Override

public

final

boolean

onDown(MotionEvent

event)

{

//

desc

=

String.format("%s%s

您按下來(lái)了\n",

desc,

DateUtil.getNowTime());

//

tv_gesture.setText(desc);

//onDown的返回值沒(méi)有作用，不影響其它手勢(shì)的處理

return

true;

}

@Override

public

final

boolean

onFling(MotionEvent

e1,

MotionEvent

e2,

float

velocityX,

float

velocityY)

{

float

offsetX

=

e1.getX()

-

e2.getX();

float

offsetY

=

e1.getY()

-

e2.getY();

if

(Math.abs(offsetX)

>

Math.abs(offsetY))

{

if

(offsetX

>

0)

{

desc

=

String.format("%s%s

您向左滑動(dòng)了一下\n",

desc,

DateUtil.getNowTime());

}

else

{

desc

=

String.format("%s%s

您向右滑動(dòng)了一下\n",

desc,

DateUtil.getNowTime());

}

}

else

{

if

(offsetY

>

0)

{

desc

=

String.format("%s%s

您向上滑動(dòng)了一下\n",

desc,

DateUtil.getNowTime());

}

else

{

desc

=

String.format("%s%s

您向下滑動(dòng)了一下\n",

desc,

DateUtil.getNowTime());

}

}

tv_gesture.setText(desc);

return

true;

}

@Override

public

final

void

onLongPress(MotionEvent

event)

{

desc

=

String.format("%s%s

您長(zhǎng)按了一下下\n",

desc,

DateUtil.getNowTime());

tv_gesture.setText(desc);

}

@Override

public

final

boolean

onScroll(MotionEvent

e1,

MotionEvent

e2,

float

distanceX,

float

distanceY)

{

return

false;

}

@Override

public

final

void

onShowPress(MotionEvent

event)

{

}

@Override

public

boolean

onSingleTapUp(MotionEvent

event)

{

desc

=

String.format("%s