自定义标题栏

主界面public class MainActivity extends AppCompatActivity implements MyCustomActionBar.OnIconClickListener {    private MyCustomActionBar myCustomActionBar;    @Override    public void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        myCustomActionBar = (MyCustomActionBar) findViewById(R.id.my_action_bar);        myCustomActionBar.SetOnIconClickListener(this);    }    @Override    public void OnIconClick(View icon) {        startActivity(new Intent(this,SecondActivity.class));    }}
跳转到第二个界面：public class SecondActivity extends AppCompatActivity implements MyCustomActionBar.OnIconClickListener {    private MyCustomActionBar myCustomActionBar;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.second);        myCustomActionBar = (MyCustomActionBar) findViewById(R.id.my_action_bar);        myCustomActionBar.SetOnIconClickListener(this);    }    @Override    public void OnIconClick(View icon) {        finish();    }}
自定义类：
public class MyCustomActionBar extends LinearLayout {    private RelativeLayout relativeLayout;    private TextView biaoti;    private ImageView img;    private TypedArray typedArray;    private int bgcolor;    private int textcolor;    private float size;    private String text;    private Drawable drawable;    public MyCustomActionBar(Context context) {        super(context);        initView(context, null);    }    public MyCustomActionBar(Context context, @Nullable AttributeSet attrs) {        super(context, attrs);        initView(context, attrs);    }    private void initView(Context context, AttributeSet attrs) {        View inflate = inflate(context, R.layout.my_action_bar_layout, this);        relativeLayout = (RelativeLayout) inflate.findViewById(R.id.container);        biaoti = (TextView) inflate.findViewById(R.id.biaoti);        img = (ImageView) inflate.findViewById(R.id.img);        img.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                if(mOnIconClickListener != null){                    mOnIconClickListener.OnIconClick(v);                }            }        });        if (attrs == null) {            return;        }        initAttrs(context,attrs);        setViewContent();    }    private void initAttrs(Context context, AttributeSet attrs) {        if (attrs == null) {            return;        }     typedArray = context.obtainStyledAttributes(attrs, R.styleable.MyCustomActionBar);     bgcolor = typedArray.getColor(R.styleable.MyCustomActionBar_action_bar_bg_color, Color.GRAY);     textcolor = typedArray.getColor(R.styleable.MyCustomActionBar_action_bar_title_text_color, Color.RED);     size = typedArray.getDimension(R.styleable.MyCustomActionBar_action_bar_title_text_size, 16);     text = typedArray.getString(R.styleable.MyCustomActionBar_action_bar_title_text);     drawable = typedArray.getDrawable(R.styleable.MyCustomActionBar_action_bar_icon_src);    }    public void setViewContent(){        relativeLayout.setBackgroundColor(bgcolor);        img.setImageDrawable(drawable);        biaoti.setText(text);        biaoti.setTextColor(textcolor);        biaoti.setTextSize(size);    }    private OnIconClickListener mOnIconClickListener;    public interface OnIconClickListener {        void OnIconClick(View icon);    } public void SetOnIconClickListener(OnIconClickListener onIconClickListener) {        mOnIconClickListener = onIconClickListener;    }}
attrs:
<?xml version="1.0" encoding="utf-8"?><resources>    <declare-styleable name="MyCustomActionBar">        <attr name="action_bar_bg_color" format="color" />        <attr name="action_bar_title_text_color" format="color" />        <attr name="action_bar_title_text_size" format="dimension" />        <attr name="action_bar_title_text" format="string" />        <attr name="action_bar_icon_src" format="reference" />    </declare-styleable></resources>
自定义布局文件：
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/container"    android:layout_width="match_parent"    android:layout_height="80dp"    android:background="@color/colorAccent">    <ImageView        android:layout_marginLeft="12dp"        android:id="@+id/img"        android:layout_width="60dp"        android:layout_height="60dp"        android:layout_centerVertical="true"        android:src="@mipmap/ic_launcher" />    <TextView        android:id="@+id/biaoti"        android:layout_width="wrap_content"        android:layout_height="60dp"        android:layout_centerInParent="true"        android:layout_centerVertical="true"        android:gravity="center"        android:src="@mipmap/ic_launcher"        android:text="标题" /></RelativeLayout>
主界面布局文件：
<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.fairy.day03.MainActivity"><com.fairy.day03.MyCustomActionBar    android:id="@+id/my_action_bar"    android:layout_width="match_parent"    android:layout_height="80dp"    app:action_bar_bg_color="@color/colorAccent"    app:action_bar_icon_src="@drawable/brad_pitt"    app:action_bar_title_text="MainActivity"    app:action_bar_title_text_color="@color/colorPrimaryDark"    app:action_bar_title_text_size="16dp" ></com.fairy.day03.MyCustomActionBar></RelativeLayout>