android 聊天界面 软键盘弹出顶起界面解决

参考：https://blog.csdn.net/I_do_can/article/details/71159198?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-2.nonecase&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-2.nonecase

首先上布局

<include
    android:id="@+id/include"
    layout="@layout/feedbacktitle"></include>

<RelativeLayout
    android:layout_below="@id/include"
    android:id="@+id/move_root"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <com.scwang.smartrefresh.layout.SmartRefreshLayout
        android:layout_alignParentTop="true"
        android:layout_above="@id/rl_input"
        android:id="@+id/srl_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp"
        app:srlEnableAutoLoadMore="true">

        <com.scwang.smartrefresh.layout.header.ClassicsHeader
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:srlTextPulling="@string/down"
            app:srlTextRelease="@string/Release" />

        <android.support.v7.widget.RecyclerView
            android:id="@+id/recycler_view"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@id/include"
            android:layout_marginLeft="25dp"
            android:layout_marginRight="25dp" />

    </com.scwang.smartrefresh.layout.SmartRefreshLayout>

    <RelativeLayout
        android:layout_alignParentBottom="true"
        android:id="@+id/rl_input"
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:paddingBottom="12dp">

        <TextView
            android:id="@+id/tv_send"
            android:layout_width="50dp"
            android:layout_height="35dp"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:layout_marginLeft="10dp"
            android:layout_marginRight="25dp"
            android:background="@drawable/send_bg"
            android:gravity="center"
            android:text="发送"
            android:textColor="#ffffffff"
            android:textSize="13sp" />

        <ImageView
            android:id="@+id/iv_photo"
            android:layout_width="25dp"
            android:layout_height="25dp"
            android:layout_alignTop="@id/tv_send"
            android:layout_alignParentBottom="true"
            android:layout_marginLeft="19dp"
            android:src="@mipmap/photo" />

        <EditText
            android:id="@+id/et_input"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:layout_marginLeft="15dp"
            android:layout_toLeftOf="@id/tv_send"
            android:layout_toRightOf="@+id/iv_photo"
            android:background="@drawable/et_bg"
            android:hint="点击输入回复内容"
            android:paddingLeft="5dp"
            android:paddingTop="10dp"
            android:paddingBottom="10dp"
            android:textColor="#ffa5a5a5"
            android:textSize="13sp" />
    </RelativeLayout>
</RelativeLayout>

java代码

View move_root;
View rl_input;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // full screen

//全屏
this.getWindow().setFlags(
WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);

    move_root= findViewById(R.id.move_root);
    rl_input= findViewById(R.id.rl_input);

    addSoftKeyBoardListener(move_root,rl_input);

}

private ViewTreeObserver.OnGlobalLayoutListener mSoftKeyBoardListener;

private class SoftKeyBoardListener implements ViewTreeObserver.OnGlobalLayoutListener {

    private View root;
    private View view;

    int lastHeight = 0;
    int lastBottom = -1;

    SoftKeyBoardListener(View r,View v) {
        root = r;
        view = v;
    }

    @Override
    public void onGlobalLayout() {
        Rect rect = new Rect();
        root.getWindowVisibleDisplayFrame(rect);
        if (lastBottom == -1) {
            lastBottom = rect.bottom;
            return;
        }

        int nb = rect.bottom;
        int ob = lastBottom;

        if (nb < ob) {
            // 键盘显示了， 滑上去
            int[] location = new int[2];
            view.getLocationInWindow(location);
            int scrollHeight = (location[1] + view.getHeight()) - nb;
            root.scrollTo(0, scrollHeight);
            lastHeight = scrollHeight;
        }
        else if (nb > ob) {
            // 键盘隐藏了, 滑下来
            root.scrollTo(0, 0);
        }

        if (nb != ob) {
            lastBottom = nb;
        }
    }
}

public void removeSoftKeyBoardListener(@NonNull View root) {
    if(mSoftKeyBoardListener != null){
        root.getViewTreeObserver().removeOnGlobalLayoutListener(mSoftKeyBoardListener);
    }
}

public void addSoftKeyBoardListener(final View root, final View view) {
    mSoftKeyBoardListener = new SoftKeyBoardListener(root,view);
    root.getViewTreeObserver().addOnGlobalLayoutListener(mSoftKeyBoardListener);
}

@Override
protected void onDestroy() {
    super.onDestroy();
    removeSoftKeyBoardListener(move_root);
}