仿照qq的Android界面

layout

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<?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"
    tools:context=".MainActivity" >

    <ImageView
        android:id="@+id/iv"
        android:layout_width="70dp"
        android:layout_height="70dp"
        android:layout_centerHorizontal="true"
        android:layout_margin="40dp"
        android:background="@drawable/head"/>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@id/iv"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="5dp"
        android:layout_marginLeft="10dp"
        android:layout_marginRight="10dp"
        android:layout_marginTop="15dp"
        android:orientation="vertical">

        <EditText
            android:id="@+id/et1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:padding="10dp"
            android:ems="10"
            android:hint="QQ号/手机号/邮箱"
            android:inputType="textPersonName"
            android:textColor="#615C5C"
            android:textColorHint="#FFC4BABA"
            android:textSize="18sp"/>

        <EditText
            android:id="@+id/et2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:padding="10dp"
            android:ems="10"
            android:hint="密码"
            android:inputType="textPassword"
            android:selectAllOnFocus="false"
            android:singleLine="false"
            android:textColor="#FFC4BABA"
            android:textColorHint="#FFC4BABA"/>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="horizontal">

            <Button
                android:id="@+id/bt1"
                android:layout_width="0dp"
                android:layout_weight="1"
                android:layout_height="wrap_content"
                android:layout_marginTop="50dp"
                android:layout_marginLeft="10dp"
                android:layout_marginRight="10dp"
                android:text="登录" />

            <Button
                android:id="@+id/bt2"
                android:layout_width="0dp"
                android:layout_weight="1"
                android:layout_height="wrap_content"
                android:layout_marginTop="50dp"
                android:layout_marginLeft="10dp"
                android:layout_marginRight="10dp"
                android:text="新用户注册" />
        </LinearLayout>

    </LinearLayout>

</RelativeLayout>

MainActivity

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package com.example.myapplication1;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

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

        ImageView iv=(ImageView)this.findViewById(R.id.iv);

        TextView et1= (TextView)this.findViewById(R.id.et1);
        TextView et2= (TextView)this.findViewById(R.id.et2);

        Button bt1= (Button)this.findViewById(R.id.bt1);
        Button bt2= (Button)this.findViewById(R.id.bt2);

    }
}

效果图