Android 实现可任意拖动的悬浮窗功能实现可任意拖动的悬浮窗功能(类似悬浮球）类似悬浮球）
最近开发项目中，有个在屏幕上任意拖动的悬浮窗功能，其实就是利用 WindowManager的api来完成这个需求，具体的实现
的功能如下：
1.自定义view
import android.content.Context;
import android.content.Intent;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.util.TypedValue;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.WindowManager;
import android.widget.LinearLayout;
import com.xinrui.recordscreen.R;
import java.lang.reflect.Field;
/**
*
*/
public class RecordScreenView extends LinearLayout implements View.OnClickListener{
private WindowManager mWindowManager;
private WindowManager.LayoutParams mLayoutParams;
private long mLastDownTime;
private float mLastDownX;
private float mLastDownY;
private boolean mIsLongTouch;
private boolean mIsTouching;
private float mTouchSlop;
private final static long LONG_CLICK_LIMIT = 20;
private final static int TIME_COUNT = 0;
private int mStatusBarHeight;
private int mCurrentMode,time=0;
private final static int MODE_NONE = 0x000;
private final static int MODE_MOVE = 0x001;
private int mOffsetToParent;
private int mOffsetToParentY;
private Context mContext;
public RecordScreenView(Context context) {
super(context);
this.mContext=context;
mWindowManager = (WindowManager) getContext().getSystemService(Context.WINDOW_SERVICE);
initView();
}
private void initView() {
View view = inflate(getContext(), R.layout.layout_ball, this)；
mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
mCurrentMode = MODE_NONE;
recordtime(0);
mStatusBarHeight = getStatusBarHeight();
mOffsetToParent = dip2px(25);
mOffsetToParentY = mStatusBarHeight + mOffsetToParent;
view.setOnTouchListener(new OnTouchListener() {
@Override
public boolean onTouch(View v, final MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mIsTouching = true;
mLastDownTime = System.currentTimeMillis();
mLastDownX = event.getX();
mLastDownY = event.getY();
postDelayed(new Runnable() {
@Override
public void run() {
if (isLongTouch()) {
mIsLongTouch = true;
}
}
}, LONG_CLICK_LIMIT);
break;
case MotionEvent.ACTION_MOVE:
if (!mIsLongTouch && isTouchSlop(event)) {
return true;
}
if (mIsLongTouch && (mCurrentMode == MODE_NONE || mCurrentMode == MODE_MOVE)) {
mLayoutParams.x = (int) (event.getRawX() - mOffsetToParent);
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