MainActivity
class="java">
package com.nico;
import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.ViewTreeObserver;
import android.view.ViewTreeObserver.OnPreDrawListener;
import android.view.Window;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;
public class MainActivity extends Activity implements
GestureDetector.OnGestureListener, OnTouchListener {
public LinearLayout leftview = null;
public LinearLayout rightview = null;
public ImageView setBtn = null;
public GestureDetector gestureD = null;
public int window_width;
public int max_width;
public boolean isScroll = false;
public int mScrollX = 0;
public ImageView img = null;
final public static int SPEED = 30;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
initView();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@SuppressWarnings("deprecation")
public void initView() {
leftview = (LinearLayout) findViewById(R.id.left_part);
rightview = (LinearLayout) findViewById(R.id.right_part);
setBtn = (ImageView) findViewById(R.id.set_btn);
img = (ImageView) findViewById(R.id.bg);
gestureD = new GestureDetector(this);
leftview.setOnTouchListener(this);
img.setOnTouchListener(this);
gestureD.setIsLongpressEnabled(false);
getmaxWidth();
}
@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
float velocityY) {
return false;
}
@Override
public void onLongPress(MotionEvent e) {
}
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX,
float distanceY) {
//拖动过程中
isScroll = true;
//distanceX是处理后点X跟前点X的距离，此时mScrollX为X方向移动距离
mScrollX += distanceX;
RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) leftview
.getLayoutParams();
int leftmargin = params.leftMargin;
//左边距 - X方向移动的距离 等于新的左边距
leftmargin -= mScrollX;
//到头了，停止移动，设定左边距为-max_width 或 0
if (leftmargin <= -max_width) {
leftmargin = -max_width;
params.leftMargin = leftmargin;
isScroll = false;
} else if (leftmargin >= 0) {
leftmargin = 0;
params.leftMargin = leftmargin;
isScroll = false;
}
//其他范围内，正常设定左边距
params.leftMargin = leftmargin;
leftview.setLayoutParams(params);
//返回false,继续传递这个事件
return false;
}
@Override
public void onShowPress(MotionEvent e) {
}
@Override
public boolean onSingleTapUp(MotionEvent e) {
//单击的时候实现左右移动
isScroll = false;
RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) leftview
.getLayoutParams();
int leftmargin = params.leftMargin;
if (leftmargin == 0) {
new MoveAsyTask(leftview, max_width).execute(-SPEED);
} else {
new MoveAsyTask(leftview, max_width).execute(SPEED);
}
return false;
}
@Override
public boolean onDown(MotionEvent e) {
//按下第一个动作时，mScrollX置为0，isScroll重置为false
mScrollX = 0;
isScroll = false;
return true;
}
public boolean hasMeasured = false;
void getmaxWidth() {
ViewTreeObserver viewTreeObserver = leftview.getViewTreeObserver();
// 获取控件宽度
viewTreeObserver.addOnPreDrawListener(new OnPreDrawListener() {
@Override
public boolean onPreDraw() {
if (!hasMeasured) {
window_width = getWindowManager().getDefaultDisplay()
.getWidth();
RelativeLayout.LayoutParams layoutParams = (RelativeLayout.LayoutParams) leftview
.getLayoutParams();
layoutParams.width = window_width;
leftview.setLayoutParams(layoutParams);
max_width = rightview.getWidth();
hasMeasured = true;
}
return true;
}
});
}
@Override
public boolean onTouch(View v, MotionEvent event) {
if (MotionEvent.ACTION_UP == event.getAction() && isScroll == true) {
RelativeLayout.LayoutParams params = (LayoutParams) leftview
.getLayoutParams();
int leftmargin = params.leftMargin;
//滑动结束后，判断拖动距离是否大于一般屏宽，是则向前，否则缩回去
if (leftmargin < -window_width / 2) {
new MoveAsyTask(leftview, max_width).execute(-SPEED);
} else {
new MoveAsyTask(leftview, max_width).execute(SPEED);
}
}
return gestureD.onTouchEvent(event);
}
}
划屏任务
package com.nico;
import android.os.AsyncTask;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
public class MoveAsyTask extends AsyncTask<Integer, Integer, String> {
public LinearLayout view;
public int max_width;
public MoveAsyTask(LinearLayout v, int mw) {
view = v;
max_width = mw;
}
@Override
protected void onProgressUpdate(Integer... values) {
RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) view
.getLayoutParams();
//更新视图
int leftmargin = params.leftMargin;
int guide = values[0];
if (guide > 0) {
// 往右
leftmargin = Math.min(leftmargin + guide, 0);
} else {
leftmargin = Math.max(leftmargin + guide, -max_width);
// 往左
}
params.leftMargin = leftmargin;
view.setLayoutParams(params);
}
@Override
protected String doInBackground(Integer... params) {
int times = 0;
if (max_width % Math.abs(params[0]) == 0)// 整除
times = max_width / Math.abs(params[0]);
else
times = max_width / Math.abs(params[0]) + 1;// 有余数
for (int i = 0; i < times; i++) {
publishProgress(params[0]);
try {
Thread.sleep(Math.abs(params[0]));
} catch (InterruptedException e) {
e.printStackTrace();
}
}
return null;
}
}
XML文件
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:id="@+id/right_part"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_marginLeft="50dp"
android:background="@android:color/background_dark"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/right_title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:gravity="center" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="设置"
android:textColor="@android:color/white"
android:textSize="20sp" />
</LinearLayout>
</LinearLayout>
<LinearLayout
android:id="@+id/left_part"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<RelativeLayout
android:id="@+id/left_title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/nav_bg" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="我"
android:textColor="@android:color/white"
android:textSize="20sp" />
<ImageView
android:id="@+id/set_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:src="@drawable/set_btn" />
</RelativeLayout>
<ImageView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/bg"
android:background="@drawable/guide_bg" />
</LinearLayout>
</RelativeLayout>
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