最简单的android底部导航

最新推荐文章于 2025-10-22 18:06:32 发布

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本文介绍了一种使用自定义控件和Fragment实现Android底部导航的方法。通过创建BottomNavigation自定义控件，结合Fragment进行页面切换，实现了流畅的用户体验。文章详细展示了自定义控件的代码实现。

android底部导航（Bottom Navigation）实现--------------------------------------只需放到Xml里面就可以使用

1，利用技术点：自定义控件 + Fragment 实现。

2，实现原理：

~1，利用Fragment特性进行流畅切换。
~2，自定义控件：
#，因为每一个底部导航选项都有一个ImageView和TextView，而每次选中都会更改ImageView和TextView的图片或颜色，所以直接抽取成自定义控件方便循环利用。

3，自定义控件代码：

public class BottomNavigation extends RelativeLayout implements OnClickListener {

private RelativeLayout rlF, rlS, rlT, rlFo;
private ImageView ivF, ivS, ivT, ivFo;
private TextView tvF, tvS, tvT, tvFo;

public BottomNavigation(Context context, AttributeSet attrs) {
super(context, attrs);
LayoutInflater.from(context).inflate(R.layout.bottom_navigation, this);
findView();
set();

changeStateClick(ivF, tvF);

changeStateNormal(ivS, tvS);
changeStateNormal(ivT, tvT);
changeStateNormal(ivFo, tvFo);

}

private void set() {
rlF.setOnClickListener(this);
rlS.setOnClickListener(this);
rlT.setOnClickListener(this);
rlFo.setOnClickListener(this);

}

private void findView() {
rlF = (RelativeLayout) findViewById(R.id.rl_first);
ivF = (ImageView) findViewById(R.id.iv_first);
tvF = (TextView) findViewById(R.id.tv_first);
tvF.setText(R.string.home_first);

rlS = (RelativeLayout) findViewById(R.id.rl_second);
ivS = (ImageView) findViewById(R.id.iv_second);
tvS = (TextView) findViewById(R.id.tv_second);
tvS.setText(R.string.home_second);

rlT = (RelativeLayout) findViewById(R.id.rl_third);
ivT = (ImageView) findViewById(R.id.iv_third);
tvT = (TextView) findViewById(R.id.tv_third);
tvT.setText(R.string.home_third);

rlFo = (RelativeLayout) findViewById(R.id.rl_forth);
ivFo = (ImageView) findViewById(R.id.iv_forth);
tvFo = (TextView) findViewById(R.id.tv_forth);
tvFo.setText(R.string.home_forth);

}

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.rl_first:

HomePageFragment hf = new HomePageFragment();

((Activity) getContext()).getFragmentManager().beginTransaction()
.replace(R.id.fl, hf).addToBackStack(null).commit();

changeStateClick(ivF, tvF);

changeStateNormal(ivS, tvS);
changeStateNormal(ivT, tvT);
changeStateNormal(ivFo, tvFo);

break;
case R.id.rl_second:
ApplicationFragment apf = new ApplicationFragment();
((Activity) getContext()).getFragmentManager().beginTransaction()
.replace(R.id.fl, apf).addToBackStack(null).commit();

changeStateClick(ivS, tvS);
changeStateNormal(ivF, tvF);
changeStateNormal(ivT, tvT);
changeStateNormal(ivFo, tvFo);
break;
case R.id.rl_third:
ActionFragment af = new ActionFragment();
((Activity) getContext()).getFragmentManager().beginTransaction()
.replace(R.id.fl, af).addToBackStack(null).commit();

changeStateClick(ivT, tvT);
changeStateNormal(ivF, tvF);
changeStateNormal(ivS, tvS);
changeStateNormal(ivFo, tvFo);

break;
case R.id.rl_forth:

MineFragment mf = new MineFragment();
((Activity) getContext()).getFragmentManager().beginTransaction()
.replace(R.id.fl, mf).addToBackStack(null).commit();

changeStateClick(ivFo, tvFo);
changeStateNormal(ivF, tvF);
changeStateNormal(ivT, tvT);
changeStateNormal(ivS, tvS);

break;

}

}

private void changeStateNormal(ImageView iv, TextView tv) {
iv.setBackgroundResource(R.drawable.apple_black);
tv.setTextColor(getResources()
.getColor(android.R.color.background_dark));
}

private void changeStateClick(ImageView iv, TextView tv) {
iv.setBackgroundResource(R.drawable.apple_red);
tv.setTextColor(getResources().getColor(android.R.color.holo_blue_dark));
}

}

4，只需直接带入就可以正常使用：

<包名.BottomNavigation
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</包名.BottomNavigation>