Android 自定义View：TopBar(1)，androidstudio蓝牙应用开发

下载地址：https://github.com/zhuanghongji/CustomViewZhj

博客中只是部分演示代码，后面新增演示的代码均只在github上更新。

效果图

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代码展示：

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MainActivity.java :

---

import com.zhuanghongji.customviewzhj.view.TopBar;

pub

lic class MainActivity extends AppCompatActivity {

TopBar mTopBar;

@Override

protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_main);

    mTopBar = (TopBar) findViewById(R.id.topBar);

// mTopBar.setLeftButtonIsVisible(false);

    mTopBar.setonTopBarClickListener(new TopBar.TopBarClickListener() {

        @Override

        public void leftBtnClick() {

            Toast.makeText(MainActivity.this, " 点击了 leftBtn ", Toast.LENGTH_SHORT).show();

        }

    });

}

}

activity_main.xml :

---

<RelativeLayout xmlns:android=“http://schemas.android.com/apk/res/android”

xmlns:tools="http://schemas.android.com/tools"

xmlns:zhj="http://schemas.android.com/apk/res-auto"

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">

<com.zhuanghongji.customviewzhj.view.TopBar

    android:id="@+id/topBar"

    android:layout_width="match_parent"

    android:layout_height="56dp"

    zhj:leftBtnBackground="#ff0000"

    zhj:leftBtnText="leftBtn"

    zhj:leftBtnTextColor="#000000"

    zhj:titleText="我是自定义的title"

    zhj:titleTextColor="#000000"

    zhj:titleTextSize="18sp"

    zhj:topBarBackground="#00ff00">

</com.zhuanghongji.customviewzhj.view.TopBar>

TopBar.java :

---

import com.zhuanghongji.customviewzhj.R;

public class TopBar extends RelativeLayout {

private Button mLeftBtn;

private TextView mTitleTv;

// 左Button属性

private int leftBtnTextColor;

private Drawable leftBtnBackground;

private String leftBtnText;

// title属性

private int titleTextColor;

private String titleText;

private float titleTextSize;

// topBar属性

private Drawable topBarBackground;

// 布局属性

private LayoutParams leftBtnParams, titleParams;

// 点击事件监听器接口 -- public

public interface TopBarClickListener {

    public void leftBtnClick();

}

private TopBarClickListener listener;

// 设置监听器

public void setonTopBarClickListener(TopBarClickListener listener) {

    this.listener = listener;

}

// 供调用的方法

public void setLeftButtonIsVisible(boolean visible) {

    if (visible) {

        mLeftBtn.setVisibility(View.VISIBLE);

    } else {

        mLeftBtn.setVisibility(View.GONE);

    }

}

// 三个构造方法，均调用均调用三个参数的那个

public TopBar(Context context) {

    this(context, null);

}

LE);

    } else {

        mLeftBtn.setVisibility(View.GONE);

    }

}

// 三个构造方法，均调用均调用三个参数的那个

public TopBar(Context context) {

    this(context, null);

}