三个点，Display-addSecondary display

 

方案一

通过Presentation来实现，他是一个Dialog（context，display）

val displayService = getSystemService(DISPLAY_SERVICE) as DisplayManager
val displays = displayService.displays
for (display in displays){
    Log.i("alic",display.toString())
}
if (displays.size > 1){
    Log.i("alic show",displays[1].toString())
    var p:Presentation = DifferentDisplay(this, displays[1])
    p.show()
}

package com.example.myapplication;

import android.app.Presentation;
import android.content.Context;
import android.os.Bundle;
import android.view.Display;

public class DifferentDisplay extends Presentation {
    public DifferentDisplay(Context outerContext, Display display) {
        super(outerContext, display);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.different_display);
    }
}

方案二

使用ActivityOptions设置activity显示在哪个屏幕上 launchDisplayId

val options = ActivityOptions.makeBasic()
options.launchDisplayId = 2
val secondIntent = Intent()
val cn = ComponentName("com.example.myapplication","com.example.myapplication.SecondActivity")
secondIntent.component = cn
secondIntent.addFlags(Intent.FLAG_ACTIVITY_MULTIPLE_TASK or Intent.FLAG_ACTIVITY_NEW_TASK)
startActivity(secondIntent,options.toBundle())

方案三

adb shell am start -n 包名+Activity

adb shell am start -n com.example.myapplication/com.example.myapplication.MainActivity --display 2