Android仿微信评论布局功能

此博客用于给自己做笔记，仿微信评论弹出键盘，功能如下：
    点击评论 按钮弹出键盘和布局，点击发送与其他地方或者物理返回键 关闭键盘与布局

       
        
整体代码：

public class CommentActivity extends AppCompatActivity {

    private  LinearLayout mLayout;
    private EditText mEdit;

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

        mLayout = (LinearLayout) findViewById(R.id.layout);
        mEdit = (EditText) findViewById(R.id.et_discuss);
    }

    public void onButtonClick(View view){
        switch (view.getId()){
            case R.id.comment:
                ShowKeyboard();
                break;
            case R.id.tv_confirm:
                hideKeyboard();
                break;
            case R.id.relativeLayout:
                hideKeyboard();
                break;
        }
    }

    //显示布局与键盘
    private void ShowKeyboard(){
        mLayout.setVisibility(View.VISIBLE);//显示布局
        InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,0);
    }
    //隐藏键盘与布局
    private void hideKeyboard(){
        mLayout.setVisibility(View.GONE);//隐藏布局
        mEdit.setText("");//清空输入
        View view = getWindow().peekDecorView();
        if (view != null) {
            InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
            inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
        }
    }

    // 捕获返回键的方法
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        //隐藏键盘与布局
        hideKeyboard();
        return true;
    }

}

布局代码：

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"
    android:orientation="vertical"
    tools:context="com.example.admin.newdemo.CommentActivity">

    <Button
        android:id="@+id/comment"
        android:layout_width="90dp"
        android:layout_height="50dp"
        android:text="评论"
        android:onClick="onButtonClick"
        />

    <RelativeLayout
        android:id="@+id/relativeLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:onClick="onButtonClick">
        <LinearLayout
            android:id="@+id/layout"
            android:layout_width="match_parent"
            android:layout_height="45dp"
            android:background="#ffffff"
            android:gravity="center_vertical"
            android:orientation="horizontal"
            android:layout_alignParentBottom="true"
            android:visibility="gone">

            <EditText
                android:id="@+id/et_discuss"
                android:layout_width="0dp"
                android:layout_height="30dp"
                android:layout_weight="1"
                android:hint="说点什么"
                android:textSize="14sp"
                android:textColor="#666666"
                android:singleLine="true"
                android:layout_marginRight="10dp"
                android:layout_marginLeft="10dp"
                android:paddingLeft="10dp"
                android:background="@drawable/comment_back"
                />
            <TextView
                android:id="@+id/tv_confirm"
                android:text="发送"
                android:textSize="14sp"
                android:textColor="#666666"
                android:layout_marginRight="10dp"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:onClick="onButtonClick"
                >
            TextView>
        LinearLayout>
    RelativeLayout>
RelativeLayout>

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