Activity、Fragment、Dialog基类简单整理

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概述

 这里简单记录下Activity、Fragment、Dialog基类中的常规写法,后续根据项目需求进行相应的扩展。

BaseActivity.java

package com.why.project.myapptemplet.activity;

import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Window;

/**
 * Created by HaiyuKing
 * Used
 */
public class BaseActivity extends AppCompatActivity {
    private static final String TAG = BaseActivity.class.getSimpleName();
    public static int screenWidth;//屏幕宽度
    public static int screenHeight;//屏幕高度
    public static int screenDendity;//屏幕密度比例
    public static int screenDendityDpi;//屏幕密度

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        // 去掉标题栏
        this.requestWindowFeature(Window.FEATURE_NO_TITLE);

        //保持屏幕为横屏或者竖屏,禁止旋转
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);//竖屏
        //setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);//横屏

        //将Acitivity 中的Window 的背景图设置为空,解决Android Activity切换时出现白屏问题
        getWindow().setBackgroundDrawable(null);

        //打印当前活动的activity
        Log.d(TAG, getClass().getSimpleName());// 知晓当前是在哪一个活动

        //3、获取屏幕宽和高
        DisplayMetrics metric = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(metric);
        screenWidth = metric.widthPixels;// 屏幕宽度(像素)
        screenHeight = metric.heightPixels;//屏幕高度(像素)

        screenDendity = (int) metric.density;//屏幕密度比例3
        screenDendityDpi = metric.densityDpi;//屏幕密度480
        super.onCreate(savedInstanceState);
    }
}

BaseFragment.java

package com.why.project.myapptemplet.fragment;

import android.os.Bundle;
import android.support.v4.app.Fragment;

/**
 * Used 基础碎片类
 */
public class BaseFragment extends Fragment {

    //传递过来的参数Bundle,供子类使用
    protected Bundle args;

    /**
     * 创建fragment的静态方法,方便传递参数
     * @param args 传递的参数
     * @return
     */
    public static <T extends Fragment>T getInstance(Class clazz, Bundle args) {
        T mFragment=null;
        try {
            mFragment= (T) clazz.newInstance();
        } catch (java.lang.InstantiationException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
        mFragment.setArguments(args);
        return mFragment;
    }

    /**
     * 初始创建Fragment对象时调用
     * @param savedInstanceState
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        args = getArguments();
    }
}

BaseDialogFragment.java

package com.why.project.myapptemplet.dialog;

import android.support.v4.app.DialogFragment;

/**
 * Created by HaiyuKing
 * Used
 */

public class BaseDialogFragment extends DialogFragment {

}

参考资料

暂时空缺

项目demo下载地址

https://github.com/haiyuKing/MyAppTemplet

posted @ 2018-10-03 11:20  HaiyuKing  阅读(1106)  评论(0编辑  收藏  举报