Android中Dialog自定义上下文花式菜单

这是一个类似于QQ里面长按消息弹出菜单的效果，菜单跟着item动
闲话不说，上代码
先自定义一个Dialog

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.TextView;

import io.dcloud.H5B79C397.R;



public class SelfDialog extends Dialog {
  private TextView copy;//确定按钮
  private TextView del;//取消按钮
  private onNoOnclickListener noOnclickListener;//取消按钮被点击了的监听器
  private onYesOnclickListener yesOnclickListener;//确定按钮被点击了的监听器
  public SelfDialog(Context context) {
    super(context, R.style.MyDialog);
  }

  public void setNoonclickListener(String str, onNoOnclickListener onNoOnclickListener) {
    if (str != null) {
      //noStr = str;
    }
    this.noonclickListener = onNoOnclickListener;
  }
  public void setYesonclickListener(String str, onYesOnclickListener onYesOnclickListener) {
    if (str != null) {
      //yesStr = str;
    }
    this.yesonclickListener = onYesOnclickListener;
  }
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.layout_noticeactivity_dialog);
    //按空白处不能取消动画
    setCanceledonTouchOutside(true);

    //初始化界面控件
    initView();
    //初始化界面数据
    //初始化界面控件的事件
    initEvent();
  }
  private void initEvent() {
    //设置确定按钮被点击后，向外界提供监听
    del.setonClickListener(new View.onClickListener() {
      @Override
      public void onClick(View v) {
 if (yesonclickListener != null) {
   yesOnclickListener.onYesClick();
 }
      }
    });
    //设置取消按钮被点击后，向外界提供监听
    copy.setonClickListener(new View.onClickListener() {
      @Override
      public void onClick(View v) {
 if (noonclickListener != null) {
   noOnclickListener.onNoClick();
 }
      }
    });
  }
  private void initView() {
    del = (TextView) findViewById(R.id.del);
    copy = (TextView) findViewById(R.id.text);

  }

  public interface onYesOnclickListener {
    public void onYesClick();
  }

  public interface onNoOnclickListener {
    public void onNoClick();
  }
}

然后看Dialog里面的布局文件

还给Dialog设置了一个样式

  
    
    @android:color/transparent
    
    true
    
    @null
    
    true
    
    false
  

然后看主代码

public class MenuTestActivity extends Activity {
  private ListView listView;
  private SelfDialog selfDialog;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_menu_test);
    listView = (ListView) findViewById(R.id.list);
    final ArrayAdapter adapter = new ArrayAdapter(MenuTestActivity.this, android.R.layout.simple_list_item_1);
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");
    adapter.add("1");

    listView.setAdapter(adapter);
    listView.setonItemLongClickListener(new AdapterView.onItemLongClickListener() {
      @Override
      public boolean onItemLongClick(final AdapterView parent, final View view, final int position, long id) {
 int[] location = new int[2];
 // parent.getItemAtPosition(position).getLocationOnScreen(location);
 view.getLocationOnScreen(location);//当前item的坐标

 int x = location[0];
 int y = location[1];
 System.out.println("x:"+x+"y:"+y);//获取控件位置坐标可采用以上方法

 selfDialog = new SelfDialog(MenuTestActivity.this);
// Window window = selfDialog.getWindow();
 // window.setContentView(view);
 Window dialogWindow = selfDialog.getWindow();
 WindowManager.LayoutParams lp = dialogWindow.getAttributes();
 dialogWindow.setGravity(Gravity.LEFT | Gravity.TOP);
 lp.x = location[0]+80; // 新位置X坐标
 lp.y = location[1]-30; // 新位置Y坐标


 // 当Window的Attributes改变时系统会调用此函数,可以直接调用以应用上面对窗口参数的更改,也可以用setAttributes
 // dialog.onWindowAttributesChanged(lp);
 dialogWindow.setAttributes(lp);

 selfDialog.setCanceledonTouchOutside(true);// 设置点击屏幕Dialog不消失

 selfDialog.setYesonclickListener("确定", new SelfDialog.onYesOnclickListener() {
   @Override
   public void onYesClick() {
     Toast.makeText(MenuTestActivity.this, adapter.getItem(position), Toast.LENGTH_LONG).show();
     selfDialog.dismiss();
   }
 });
 selfDialog.setNoonclickListener("取消", new SelfDialog.onNoOnclickListener() {
   @Override
   public void onNoClick() {
     Toast.makeText(MenuTestActivity.this, adapter.getItem(position), Toast.LENGTH_LONG).show();
     selfDialog.dismiss();
   }
 });
 selfDialog.show();

 return true;
      }
    });


  }
}

主程序的布局

效果图：

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。