团队冲刺博客（三）
这次是添加了头像及用户名的界面，点击头像，进入相对应的用户界面,
以及增加了一个点击安卓APP一键退出的功能。
效果如下：
部分代码如下：
点击头像进入用户登录界面：
HeadPortraitActivity.java
1 import androidx.appcompat.app.AppCompatActivity; 2 import android.content.Intent; 3 import android.os.Bundle; 4 import android.view.View; 5 import android.widget.Button; 6 7 import com.michael.cloudphotos.MainActivity; 8 import com.michael.cloudphotos.R; 9 10 public class HeadPortraitActivity extends AppCompatActivity { 11 12 @Override 13 protected void onCreate(Bundle savedInstanceState) { 14 super.onCreate(savedInstanceState); 15 setContentView(R.layout.activity_head_portrait); 16 Button mlogin = findViewById(R.id.login); 17 Button msignin = findViewById(R.id.sign_in); 18 mlogin.setOnClickListener(new View.OnClickListener() { 19 @Override 20 public void onClick(View v) { 21 Intent intent=null; 22 //返回主页 23 intent=new Intent(HeadPortraitActivity.this,MainActivity.class); 24 startActivity(intent); 25 } 26 }); 27 msignin.setOnClickListener(new View.OnClickListener() { 28 @Override 29 public void onClick(View v) { 30 Intent intent=null; 31 //跳转到注册界面 32 intent=new Intent(HeadPortraitActivity.this,register.class); 33 startActivity(intent); 34 } 35 }); 36 } 37 }
一键退出的后台代码：
Exit.java
1 import android.app.Activity; 2 import android.app.Application; 3 4 import java.util.ArrayList; 5 import java.util.List; 6 7 public class Exit extends Application { 8 private List<Activity> activityList = new ArrayList<>(); 9 private static Exit instance; 10 11 public Exit(){} 12 public static Exit getInstance(){ 13 if(null == instance){ 14 instance = new Exit(); 15 } 16 return instance; 17 } 18 19 //添加Activity到容器中 20 public void addActivity(Activity activity){ 21 activityList.add(activity); 22 } 23 24 //遍历所有Activity并finish 25 public void exit(){ 26 for(Activity activity : activityList){ 27 //依次关闭 28 activity.finish(); 29 //Log.i("activity", "del_size:" + activityList.size()); 30 //Log.i("activity", "del_name:" + activity.getIntent()); 31 } 32 //强制退出 33 System.exit(0); 34 } 35 }
在MainActivity.java中，头像及一键退出的代码为：
1 NavigationView navigationView = findViewById(R.id.nav_view);//获取navigationView 2 navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() { 3 @Override 4 public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) { 5 switch (menuItem.getItemId()){ 6 case R.id.nav_exit: 7 Exit.getInstance().exit(); 8 break; 9 } 10 return false; 11 } 12 }); 13 14 //头像——跳转登录界面 15 View headView=navigationView.getHeaderView(0); 16 mHead_portrait= headView.findViewById(R.id.Head_portrait);//通过headView来获取头布局中的组件 17 mHead_portrait.setOnClickListener(new View.OnClickListener() { 18 @Override 19 public void onClick(View v) { 20 Intent intent = new Intent(MainActivity.this, HeadPortraitActivity.class); 21 startActivity(intent); 22 } 23 });
activity_head_portrait.xml(此为点击头像后进入的登录界面)
1 <?xml version="1.0" encoding="utf-8"?> 2 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 xmlns:app="http://schemas.android.com/apk/res-auto" 4 xmlns:tools="http://schemas.android.com/tools" 5 android:layout_width="match_parent" 6 android:layout_height="match_parent" 7 android:orientation="vertical" 8 tools:context=".LoginAndRigister.HeadPortraitActivity"> 9 10 <LinearLayout 11 android:layout_width="match_parent" 12 android:layout_height="wrap_content" 13 android:layout_above="@+id/id_relativeLayout" 14 android:layout_marginBottom="30dp" 15 android:gravity="center" 16 android:orientation="horizontal"> 17 18 <ImageView 19 android:layout_width="wrap_content" 20 android:layout_height="wrap_content" 21 android:src="@mipmap/ic_cream" 22 android:layout_marginTop="30dp" 23 android:layout_marginBottom="40dp"/> 24 25 </LinearLayout> 26 27 <LinearLayout 28 android:id="@+id/id_relativeLayout" 29 android:layout_width="match_parent" 30 android:layout_height="wrap_content" 31 android:layout_centerInParent="true" 32 android:orientation="vertical"> 33 34 <LinearLayout 35 android:id="@+id/id_LinearLayout" 36 android:layout_width="match_parent" 37 android:layout_height="match_parent" 38 android:layout_marginLeft="10dp" 39 android:layout_marginRight="10dp" 40 android:layout_weight="1" 41 android:gravity="center_vertical" 42 android:orientation="horizontal"> 43 44 <TextView 45 android:id="@+id/id_text" 46 android:layout_width="wrap_content" 47 android:layout_height="wrap_content" 48 android:layout_gravity="center_vertical" 49 android:text="账 号" 50 android:textSize="20dp" 51 android:layout_marginLeft="15dp"/> 52 53 <EditText 54 android:id="@+id/id" 55 android:layout_width="match_parent" 56 android:layout_height="wrap_content" 57 android:layout_gravity="center_vertical" 58 android:layout_marginLeft="20dp" 59 android:layout_marginRight="20dp" 60 android:layout_toRightOf="@+id/id_text" 61 android:layout_weight="1" 62 android:background="@null" 63 android:ems="10" 64 android:hint="请输入账号" 65 android:singleLine="true" /> 66 67 </LinearLayout> 68 69 </LinearLayout> 70 71 <LinearLayout 72 android:id="@+id/password_relativeLayout" 73 android:layout_width="match_parent" 74 android:layout_height="wrap_content" 75 android:layout_centerInParent="true" 76 android:layout_marginTop="10dp" 77 android:layout_below="@+id/id_relativeLayout" 78 android:orientation="vertical"> 79 80 <LinearLayout 81 android:id="@+id/password_LinearLayout" 82 android:layout_width="match_parent" 83 android:layout_height="match_parent" 84 android:layout_marginLeft="10dp" 85 android:layout_marginRight="10dp" 86 android:layout_weight="1" 87 android:gravity="center_vertical" 88 android:orientation="horizontal"> 89 90 <TextView 91 android:id="@+id/password_text" 92 android:layout_width="wrap_content" 93 android:layout_height="wrap_content" 94 android:layout_gravity="center_vertical" 95 android:text="密 码" 96 android:textSize="20dp" 97 android:layout_marginLeft="15dp"/> 98 99 <EditText 100 android:id="@+id/password" 101 android:layout_width="match_parent" 102 android:layout_height="wrap_content" 103 android:layout_gravity="center_vertical" 104 android:layout_marginLeft="20dp" 105 android:layout_marginRight="20dp" 106 android:layout_toRightOf="@+id/password_text" 107 android:layout_weight="1" 108 android:background="@null" 109 android:ems="10" 110 android:hint="请输入密码" 111 android:singleLine="true" /> 112 113 </LinearLayout> 114 </LinearLayout> 115 116 <LinearLayout 117 android:layout_width="match_parent" 118 android:layout_height="wrap_content" 119 android:layout_below="@+id/password_relativeLayout" 120 android:gravity="center" 121 android:orientation="horizontal"> 122 123 <Button 124 android:id="@+id/login" 125 android:layout_width="150dp" 126 android:layout_height="wrap_content" 127 android:layout_marginTop="5dp" 128 android:layout_marginLeft="30dp" 129 android:text="登 录" 130 android:background="@color/colorPrimary" 131 android:textColor="#ffffff" 132 android:textSize="18dp"/> 133 134 <Button 135 android:id="@+id/sign_in" 136 android:layout_width="150dp" 137 android:layout_height="wrap_content" 138 android:layout_below="@+id/password_relativeLayout" 139 android:layout_marginRight="20dp" 140 android:layout_marginLeft="20dp" 141 android:layout_toRightOf="@+id/login" 142 android:layout_marginTop="5dp" 143 android:background="@color/colorPrimary" 144 android:text="注 册" 145 android:textColor="#ffffff" 146 android:textSize="18dp"/> 147 148 </LinearLayout> 149 </RelativeLayout>
activity_register.xml（此为注册界面）
1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 xmlns:app="http://schemas.android.com/apk/res-auto" 4 xmlns:tools="http://schemas.android.com/tools" 5 android:layout_width="match_parent" 6 android:layout_height="match_parent" 7 android:orientation="vertical" 8 tools:context=".LoginAndRigister.register"> 9 10 <RelativeLayout 11 android:id="@+id/register_id" 12 android:layout_width="wrap_content" 13 android:layout_height="wrap_content"> 14 15 <TextView 16 android:id="@+id/register_id_text" 17 android:layout_width="wrap_content" 18 android:layout_height="wrap_content" 19 android:text="账号"/> 20 21 <EditText 22 android:layout_width="wrap_content" 23 android:layout_height="wrap_content" 24 android:layout_toRightOf="@+id/register_id_text" 25 android:hint="请输入账号"/> 26 27 </RelativeLayout> 28 29 <RelativeLayout 30 android:id="@+id/register_password" 31 android:layout_width="wrap_content" 32 android:layout_height="wrap_content"> 33 34 <TextView 35 android:id="@+id/register_password_text" 36 android:layout_width="wrap_content" 37 android:layout_height="wrap_content" 38 android:text="密码"/> 39 40 <EditText 41 android:layout_width="wrap_content" 42 android:layout_height="wrap_content" 43 android:layout_toRightOf="@+id/register_password_text" 44 android:hint="请输入密码"/> 45 46 </RelativeLayout> 47 48 <RelativeLayout 49 android:id="@+id/register_phone" 50 android:layout_width="wrap_content" 51 android:layout_height="wrap_content"> 52 53 <TextView 54 android:id="@+id/register_phone_text" 55 android:layout_width="wrap_content" 56 android:layout_height="wrap_content" 57 android:text="电话号码"/> 58 59 <EditText 60 android:layout_width="wrap_content" 61 android:layout_height="wrap_content" 62 android:layout_toRightOf="@+id/register_phone_text" 63 android:hint="请输入账号"/> 64 65 </RelativeLayout> 66 67 <RelativeLayout 68 android:layout_width="wrap_content" 69 android:layout_height="wrap_content"> 70 71 <Button 72 android:layout_width="wrap_content" 73 android:layout_height="wrap_content" 74 android:text="注册"/> 75 76 </RelativeLayout> 77 </LinearLayout>
界面还是略有一些粗糙，后续还会继续优化界面，使其变得更加美观。
