android - 尝试使用 markushi circlebutton，屏幕上什么也没有出现？

Question

我正在尝试在我的 android 项目中使用 markushi circlebutton。没有错误消息，只是屏幕上没有显示按钮，请帮助我，谢谢!

这是 MainActivity 代码:

package com.example.test2;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {

private at.markushi.ui.CircleButton m_circleButton;


boolean doubleBackToExitPressedOnce;

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

    Button b = (Button) findViewById(R.id.button1);
    b.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            Intent goto_next_activity = new Intent(getApplicationContext(),SecondActivity.class);
            startActivity(goto_next_activity);
        }
    });

    m_circleButton = (at.markushi.ui.CircleButton) findViewById(R.id.Button2);
    m_circleButton.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
            Intent goto_third_activity = new Intent(getApplicationContext(),ThirdActivity.class);
            startActivity(goto_third_activity);
            }


    } );

}


}

和 activity_main.xml :

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" xmlns:app="http://schemas.android.com/apk/res/com.example.test2">

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/hello_world" />

<Button
    android:id="@+id/button1"
    android:layout_width="200dp"
    android:layout_height="wrap_content"
    android:layout_centerHorizontal="true"
    android:layout_centerVertical="true"
    android:background="#3b5998"
    android:text="Go2"
    android:textColor="#ffffff"
    android:textStyle="bold" />

<at.markushi.ui.CircleButton
    android:id="@+id/Button2"
    android:layout_width="200dp"
    android:layout_height="wrap_content"
    android:clickable="true"
    app:cb_color="#ff99cc"
    app:cb_pressedRingWidth="5dp"
    android:layout_alignLeft="@+id/button1"
    android:layout_below="@+id/button1"
    android:layout_marginTop="29dp"
    android:background="#3b5998"
    android:text="Go3"
    android:textColor="#000000"
    android:textStyle="bold" />

   </RelativeLayout>

Answer 1

只需将 android:layout_width 和 android:layout_height 设置为相同的值

 <at.markushi.ui.CircleButton
    android:id="@+id/Button2"
    android:layout_width="200dp"
    android:layout_height="200dp"
    android:clickable="true"
    app:cb_color="#ff99cc"
    app:cb_pressedRingWidth="5dp"
    android:layout_alignLeft="@+id/button1"
    android:layout_below="@+id/button1"
    android:layout_marginTop="29dp"
    android:background="#3b5998"
    android:text="Go3"
    android:textColor="#000000"
    android:textStyle="bold" />