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android studio多页面滑动,Android Studio之多个Activity的滑动切换(二)

發(fā)布時(shí)間:2025/3/19 Android 30 豆豆
生活随笔 收集整理的這篇文章主要介紹了 android studio多页面滑动,Android Studio之多个Activity的滑动切换(二) 小編覺(jué)得挺不錯(cuò)的,現(xiàn)在分享給大家,幫大家做個(gè)參考.

1、由于Android界面上的所有控件一般都位于Layout控件(比如RelativeLayout)之上,而布局控件可以設(shè)置響應(yīng)touch事件,所以可以通過(guò)布局控件的setOnTouchListen來(lái)截獲touch事件,做進(jìn)一步的處理。

2、關(guān)于界面滑動(dòng),涉及到gesture的處理,而gesture(手勢(shì))是touch事件的更高一層的事件,可以將touch事件傳入GestureDetector對(duì)象進(jìn)行處理,而創(chuàng)建GestureDetector對(duì)象,要首先創(chuàng)建OnGestureListener對(duì)象,在OnGestureListener的OnFling函數(shù)中可以進(jìn)行手勢(shì)識(shí)別。

3、具體流程。實(shí)現(xiàn)OnTouchListen和OnGestureListen兩個(gè)抽象類,同時(shí)實(shí)現(xiàn)其中的抽象函數(shù)即可。

(1)IntellisenseActivity中繼承抽象類

(2)創(chuàng)建布局控件RelativeLayout的id為relativelayout

(3)代碼編寫

package com.design.cjc.intellisense;

import android.content.Intent;

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.view.View;

import android.widget.RelativeLayout;

public class IntellisenseActivity extends ActionBarActivity implements View.OnTouchListener,GestureDetector.OnGestureListener{

private RelativeLayout rl;

private GestureDetector gd;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_intellisense);

rl=(RelativeLayout)findViewById(R.id.relativelayout);

rl.setOnTouchListener(this);

rl.setLongClickable(true); //很重要

gd=new GestureDetector((GestureDetector.OnGestureListener)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_intellisense, 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 onDown(MotionEvent e) {

return false;

}

@Override

public void onShowPress(MotionEvent e) {

}

@Override

public boolean onSingleTapUp(MotionEvent e) {

return false;

}

@Override

public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {

return false;

}

@Override

public void onLongPress(MotionEvent e) {

}

@Override

public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {

//手勢(shì)識(shí)別

//e1:起點(diǎn)信息

//e2:終點(diǎn)信息

//velocityX:x方向移動(dòng)速度

//velocityY:y方向移動(dòng)速度

final int FLING_MIN_DISTANCE=100;

final int FLING_MIN_VELOCITY=200;

if(e1.getX() - e2.getX() > FLING_MIN_DISTANCE && Math.abs(velocityX) > FLING_MIN_VELOCITY){

Intent intent = new Intent(IntellisenseActivity.this, PCCtrlActivity.class);

startActivity(intent);

}

return false;

}

@Override

public boolean onTouch(View v, MotionEvent event) {

return gd.onTouchEvent(event); //touch事件交給GestureDetector處理

//return false;

}

}

(3)PCCtrlActivity中做與IntellisenseActivity相近的處理

package com.design.cjc.intellisense;

import android.content.Intent;

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.view.View;

import android.widget.RelativeLayout;

public class PCCtrlActivity extends ActionBarActivity implements View.OnTouchListener,GestureDetector.OnGestureListener {

private RelativeLayout rl;

private GestureDetector gd;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_pcctrl);

rl=(RelativeLayout)findViewById(R.id.relativelayout);

rl.setOnTouchListener(this);

rl.setLongClickable(true); //很重要

gd=new GestureDetector((GestureDetector.OnGestureListener)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_pcctrl, 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 onDown(MotionEvent e) {

return false;

}

@Override

public void onShowPress(MotionEvent e) {

}

@Override

public boolean onSingleTapUp(MotionEvent e) {

return false;

}

@Override

public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {

return false;

}

@Override

public void onLongPress(MotionEvent e) {

}

@Override

public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {

final int FLING_MIN_DISTANCE=100;

final int FLING_MIN_VELOCITY=200;

if(e1.getX() - e2.getX() > FLING_MIN_DISTANCE && Math.abs(velocityX) > FLING_MIN_VELOCITY){

Intent intent = new Intent(PCCtrlActivity.this,IntellisenseActivity.class);

startActivity(intent);

}

return false;

}

@Override

public boolean onTouch(View v, MotionEvent event) {

return gd.onTouchEvent(event);

}

}

參考文獻(xiàn)

原文:http://blog.csdn.net/cjc211322/article/details/44260429

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