guanguan_app1/app/src/main/java/com/ynstkz/shitu/android/base/TitleBarActivity.java

package com.ynstkz.shitu.android.base;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.design.widget.Snackbar;
import android.view.View;
import android.widget.TextView;

import com.ynstkz.shitu.android.R;
import com.ynstkz.shitu.android.utils.StatusBarUtil;

/**
 * 作者：fuchangle on 2018/1/27 22:25
 */

public abstract class TitleBarActivity extends BaseActivity{

    private TextView mToolbarTitle;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(getLayoutId());
        StatusBarUtil.setColorNoTranslucent(this, getResources().getColor(R.color.colorPrimary));
        mToolbarTitle = findViewById(R.id.tv_title);
        if (mToolbarTitle != null) {
            //getTitle()的值是activity的android:lable属性值
            mToolbarTitle.setText(getTitle());
            //设置默认的标题不显示
            if(getSupportActionBar() != null){
                getSupportActionBar().setDisplayShowTitleEnabled(false);
            }
        }
    }


    /**
     * 获取头部标题的TextView
     * @return
     */
    public TextView getToolbarTitle(){
        return mToolbarTitle;
    }

    /**
     * 设置头部标题
     * @param title
     */
    public void setToolBarTitle(CharSequence title) {
        if(mToolbarTitle != null){
            mToolbarTitle.setText(title);
        }
    }

    /**
     * 是否显示后退按钮,默认显示,可在子类重写该方法.
     * @return
     */
    protected boolean isShowBacking(){
        return true;
    }

    protected abstract int getLayoutId();

}