无法在AVD上查看主要活动更改

问题描述

我无法像按钮和任何过渡一样查看对mainactivity所做的AVD更改。虽然菜单清晰可见。我只看到菜单栏，在AVD中没有可见的按钮

 public void onCreate(@Nullable Bundle savedInstanceState,@Nullable PersistableBundle persistentState) {
    super.onCreate(savedInstanceState,persistentState);
    setContentView(R.layout.activity_main);
    btn= findViewById(R.id.myButton);
    myLayout=findViewById(R.id.myLayout);
    myLayout.setonTouchListener(
            new RelativeLayout.OnTouchListener(){
                @Override
                public boolean onTouch(View view,MotionEvent motionEvent) {
                    movebtn();
                    return true;
                }
            }
    );
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater= getMenuInflater();
    inflater.inflate(R.menu.main_menu,menu);
    return true;

}
public void movebtn(){
    RelativeLayout.LayoutParams positionrules = new RelativeLayout.LayoutParams(
            RelativeLayout.LayoutParams.WRAP_CONTENT,RelativeLayout.LayoutParams.WRAP_CONTENT
    );
    positionrules.addRule(RelativeLayout.ALIGN_PARENT_BottOM,RelativeLayout.TRUE);
   btn.setLayoutParams(positionrules);
   ViewGroup.LayoutParams sizerules = btn.getLayoutParams();
   sizerules.width=400;
   sizerules.height=300;
   btn.setLayoutParams(sizerules);
}

@Override
public boolean onoptionsItemSelected(@NonNull MenuItem item) {
    switch (item.getItemId()){

        case R.id.settings_menu:
            Toast.makeText(this,"Settings menu",Toast.LENGTH_SHORT).show();
            return true;
        case R.id.alarm_menu:
            Toast.makeText(this,"Alarm Menu",Toast.LENGTH_SHORT).show();
            return true;
        default:
            return super.onoptionsItemSelected(item);
    }

}

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。

小编邮箱:dio#foxmail.com (将#修改为@）