QQ登陆模拟练习

第一视图窗口

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/beijing"/>

</LinearLayout>

实现代码——延时跳转

package com.hanqi.lianxi;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import java.util.Timer;
import java.util.TimerTask;

public class qqActivity2 extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_qq2);

        final Intent localIntent = new Intent(this,qqActivity.class);
        Timer Timer = new Timer();
        TimerTask tast = new TimerTask() {
            @Override
            public void run()
            {
                startActivity(localIntent);
            }
        };

        Timer.schedule(tast,4000);
    }
}

实现效果图：

第二视图窗口

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.hanqi.lianxi.qqActivity"
    android:orientation="vertical"
    android:weightSum="1">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:src="@drawable/qq2"/>

    <Spinner
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:id="@+id/sp_1"
        android:singleLine="true"
        ></Spinner>

    <EditText
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:hint="密码"
        android:textSize="15dp"
        android:password="true"
        android:singleLine="true"
        />

    <Button
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:text="登录"
        android:background="@drawable/lanse"
        android:layout_marginTop="20dp"
        android:textSize="10pt"
        android:id="@+id/dl"
        android:onClick="bl_OnClick"/>

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<EditText xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="50dp"
    android:textSize="15dp"
    android:hint="账号"
    android:numeric="integer">

</EditText>

实现代码

package com.hanqi.lianxi;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.Toast;

public class qqActivity extends Activity {

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



        String[] strings = {"728664121","1132143009","1186364571","1847593021","92718287187",};

        ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String>(this,R.layout.layout_qq,strings);


        Spinner sp_1 = (Spinner)findViewById(R.id.sp_1);

        sp_1.setAdapter(arrayAdapter);

        sp_1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {


            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {

                Toast.makeText(qqActivity.this, "账号不能为空", Toast.LENGTH_SHORT).show();
            }
        });


    }
    public void bl_OnClick(View v)
    {
        Intent intent = new Intent(this,qqActivity3.class);

        startActivity(intent);

        Toast.makeText(qqActivity.this, "登陆成功，请稍后……", Toast.LENGTH_SHORT).show();
    }
}

实现效果：

第三视图窗口

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@drawable/img"/>

</LinearLayout>

实现代码

package com.hanqi.lianxi;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;

import java.util.Timer;
import java.util.TimerTask;

public class qqActivity3 extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_qq3);


        Timer Timer = new Timer();
        TimerTask tast = new TimerTask() {
            @Override
            public void run()
            {

            }
        };
    }
}

实现效果图