懸浮窗的實現

摘要： 1. FloatWindowView類 package comi.example.liy.firstbasicproject.entityClass; import android.content.Context; import android.util.Log; import andr...

1. FloatWindowView類

package comi.example.liy.firstbasicproject.entityClass;

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.LinearLayout;
import android.widget.TextView;

import comi.example.liy.firstbasicproject.R;

/**
 * Created by liy on 2018-10-12 13:09
 */
public class FloatWindowView extends LinearLayout {
private WindowManager windowManager;
private TextView textView1;
private TextView textView2;

public static int viewWidth;
public static int viewHeight;

private int inputStartX = 0;
private int inputStartY = 0;
private int viewStartX = 0;
private int viewStartY = 0;
private int inMovingX=0;
private int inMovingY=0;
private WindowManager.LayoutParams mParams;

public FloatWindowView(Context context) {
super(context);
windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
LayoutInflater.from(context).inflate(R.layout.float_window,this);
View view = findViewById(R.id.float_window_layout);
textView1 = (TextView) view.findViewById(R.id.accumulative_consumption);
textView2 = (TextView)view.findViewById(R.id.accumulative_quantity);
viewHeight = view.getLayoutParams().height;
viewWidth = view.getLayoutParams().width;
}
@Override
public booleanonTouchEvent(MotionEvent event){
switch (event.getAction()){
case MotionEvent.ACTION_DOWN:
inputStartX = (int)event.getRawX();
inputStartY = (int)event.getRawY();
viewStartX = mParams.x;
viewStartY = mParams.y;
break;
case MotionEvent.ACTION_MOVE:
inMovingX = (int)event.getRawX();
inMovingY = (int)event.getRawY();
updatePosition();
break;
default:
break;
}
Log.v("X-Y",
"inputStartX: "+inputStartX+"\n"
+"inputStartY: "+inputStartY+"\n"
+"viewStartX: "+viewStartX+"\n"
+"viewStartY: "+viewStartY+"\n"
+"inMovingX: "+inMovingX+"\n"
+"inMovingY: "+inMovingY+"\n");
return super.onTouchEvent(event);
}

private void updatePosition(){
mParams.x =viewStartX + inMovingX - inputStartX;
mParams.y =viewStartY + inMovingY- inputStartY;
windowManager.updateViewLayout(this,mParams);
}

public void setmParams( WindowManager.LayoutParams params){
mParams = params;
}

public void setData(String data1,String data2){
textView1.setText(data1);
textView2.setText(data2);
}
}

2. float_window.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#99149FEB"
android:padding="5dp"
android:layout_gravity="center"
android:id="@+id/float_window_layout">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="@+id/textView6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="本月消費(元)："
android:textStyle="bold"
android:textColor="@color/white"
android:textSize="@dimen/character_3"/>
<TextView
android:id="@+id/accumulative_consumption"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textStyle="bold"
android:textColor="@color/white"
android:textSize="@dimen/character_3"
android:text="" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:id="@+id/textView8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textStyle="bold"
android:textColor="@color/white"
android:textSize="@dimen/character_3"
android:text="累計筆數(筆)：" />
<TextView
android:id="@+id/accumulative_quantity"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="@dimen/character_3"
android:layout_weight="1"
android:textStyle="bold"
android:textColor="@color/white"
android:text="" />
</LinearLayout>
</LinearLayout>

3. FloatWindowActivity類

package comi.example.liy.firstbasicproject.ui.activity;

import android.app.Activity;
import android.graphics.PixelFormat;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.Gravity;
import android.view.WindowManager;

import comi.example.liy.firstbasicproject.R;
import comi.example.liy.firstbasicproject.entityClass.FloatWindowView;
import comi.example.liy.firstbasicproject.persist.Settings;

/**
 * Created by liy on 2018-10-12 13:15
 */
public class FloatWindowActivity extends Activity {
private Settings settings;//設定
private FloatWindowView floatWindowView;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_float_window);
settings = Settings.getInstance(this);
}

@Override
protected void onResume() {
super.onResume();
creatFloatWindowView();
showFloatWindowData("200","1000");
}

@Override
protected void onStop() {
getWindowManager().removeView(floatWindowView);
floatWindowView = null;
super.onStop();
}

//建立懸浮窗
private void creatFloatWindowView(){
WindowManager windowManager = getWindowManager();
int screenHeight = windowManager.getDefaultDisplay().getHeight();
int screenWidth = windowManager.getDefaultDisplay().getWidth();
WindowManager.LayoutParams params = new WindowManager.LayoutParams();
if(floatWindowView == null){
floatWindowView = new FloatWindowView(this);
params.type = WindowManager.LayoutParams.TYPE_APPLICATION;
params.format = PixelFormat.RGBA_8888;
params.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE|WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL;
params.gravity = Gravity.START| Gravity.TOP;
params.width =FloatWindowView.viewWidth;
params.height = FloatWindowView.viewHeight;
params.x = screenWidth;
params.y = screenHeight/2;
floatWindowView.setmParams(params);
windowManager.addView(floatWindowView,params);
}
}

//顯示懸浮窗資料
public void showFloatWindowData(String data1,String data2){
floatWindowView.setData(data1,data2);
}

}

4. activity_float_window.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

</LinearLayout>

5. 顯示效果如下圖所示，移動手指可上下左右滑動。