首先搭建布局
主界面布局：
1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 2 android:layout_width="match_parent" 3 android:layout_height="match_parent" 4 android:orientation="horizontal" > 5 6 <LinearLayout 7 android:id="@+id/ll" 8 android:layout_width="wrap_content" 9 android:layout_height="wrap_content" 10 android:layout_alignParentRight="true" 11 android:gravity="center" 12 android:orientation="vertical" > 13 14 <ImageView 15 android:id="@+id/image_btn" 16 android:layout_width="wrap_content" 17 android:layout_height="wrap_content" 18 android:background="@null" 19 android:src="@drawable/blank" /> 20 21 <Button 22 android:id="@+id/select_btn" 23 android:layout_width="wrap_content" 24 android:layout_height="wrap_content" 25 android:layout_below="@id/image_btn" 26 android:layout_centerHorizontal="true" 27 android:text="选择头像" /> 28 </LinearLayout> 29 30 <TableLayout 31 android:layout_width="wrap_content" 32 android:layout_height="wrap_content" 33 android:layout_toLeftOf="@id/ll" 34 android:stretchColumns="1" > 35 36 <TableRow> 37 38 <TextView android:text="用户名:" /> 39 40 <EditText /> 41 </TableRow> 42 43 <TableRow> 44 45 <TextView android:text="密码:" /> 46 47 <EditText /> 48 </TableRow> 49 50 <TableRow> 51 52 <TextView android:text="确认密码:" /> 53 54 <EditText /> 55 </TableRow> 56 57 <TableRow> 58 59 <TextView android:text="E-mail地址:" /> 60 61 <EditText /> 62 </TableRow> 63 </TableLayout> 64 65 </RelativeLayout>
DialogActivity布局
1 <GridLayout xmlns:android="http://schemas.android.com/apk/res/android" 2 android:layout_width="match_parent" 3 android:layout_height="match_parent" 4 android:columnCount="4" 5 android:orientation="horizontal" > 6 7 <ImageView 8 android:id="@+id/image_01" 9 android:layout_width="wrap_content" 10 android:layout_height="wrap_content" 11 android:background="@null" 12 android:src="@drawable/img01" /> 13 14 <ImageView 15 android:id="@+id/image_02" 16 android:layout_width="wrap_content" 17 android:layout_height="wrap_content" 18 android:background="@null" 19 android:src="@drawable/img02" /> 20 21 <ImageView 22 android:id="@+id/image_03" 23 android:layout_width="wrap_content" 24 android:layout_height="wrap_content" 25 android:background="@null" 26 android:src="@drawable/img03" /> 27 28 <ImageView 29 android:id="@+id/image_04" 30 android:layout_width="wrap_content" 31 android:layout_height="wrap_content" 32 android:background="@null" 33 android:src="@drawable/img04" /> 34 35 <ImageView 36 android:id="@+id/image_05" 37 android:layout_width="wrap_content" 38 android:layout_height="wrap_content" 39 android:background="@null" 40 android:src="@drawable/img05" /> 41 42 <ImageView 43 android:id="@+id/image_06" 44 android:layout_width="wrap_content" 45 android:layout_height="wrap_content" 46 android:background="@null" 47 android:src="@drawable/img06" /> 48 49 <ImageView 50 android:id="@+id/image_07" 51 android:layout_width="wrap_content" 52 android:layout_height="wrap_content" 53 android:background="@null" 54 android:src="@drawable/img07" /> 55 56 <ImageView 57 android:id="@+id/image_08" 58 android:layout_width="wrap_content" 59 android:layout_height="wrap_content" 60 android:background="@null" 61 android:src="@drawable/img08" /> 62 63 <ImageView 64 android:id="@+id/image_09" 65 android:layout_width="wrap_content" 66 android:layout_height="wrap_content" 67 android:background="@null" 68 android:src="@drawable/img09" /> 69 70 </GridLayout>
AndroidManifest.xml中注册活动
1 <application 2 android:allowBackup="true" 3 android:icon="@drawable/ic_launcher" 4 android:label="@string/app_name" 5 android:theme="@style/AppTheme" > 6 <activity 7 android:name=".MainActivity" 8 android:label="@string/app_name" > 9 <intent-filter> 10 <action android:name="android.intent.action.MAIN" /> 11 12 <category android:name="android.intent.category.LAUNCHER" /> 13 </intent-filter> 14 </activity> 15 <activity 16 android:name=".DialogActivity" 17 android:label="选择头像" 18 android:theme="@android:style/Theme.Dialog"> 19 20 </activity> 21 </application>
MainActivity主活动加载布局，点击事件，接收返回的结果
1 import android.content.Intent;
2 import android.os.Bundle;
3 import android.view.View;
4 import android.view.View.OnClickListener;
5 import android.widget.Button;
6 import android.widget.ImageView;
7
8 public class MainActivity extends LifeCycleActivity {
9
10 Button select;
11 ImageView showPic;
12
13 public static final int SELECT_PIC = 1;
14
15 @Override
16 protected void onCreate(Bundle savedInstanceState) {
17 super.onCreate(savedInstanceState);
18 setContentView(R.layout.activity_main);
19
20 select = (Button) findViewById(R.id.select_btn);
21 showPic = (ImageView) findViewById(R.id.image_btn);
22
23 select.setOnClickListener(new OnClickListener() {
24 @Override
25 public void onClick(View v) {
26 Intent intent = new Intent(MainActivity.this,
27 DialogActivity.class);
28 startActivityForResult(intent, SELECT_PIC);
29 }
30 });
31
32 }
33 @Override
34 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
35 if (requestCode == SELECT_PIC && resultCode == RESULT_OK) {
36 int imgid = data.getIntExtra("image", -1);
37 //更换图片
38 if(imgid!=-1){
39 showPic.setImageResource(imgid);
40 }
41 }
42 }
43
44 }
45
46
DialogActivity活动加载布局，返回数据
这里使用两种方式，一种是使用数据，一种是使用反射
1 import android.content.Intent;
2 import android.os.Bundle;
3 import android.view.View;
4 import android.view.View.OnClickListener;
5 import android.widget.ImageView;
6
7 public class DialogActivity extends LifeCycleActivity {
8
9 ImageView[] iv = new ImageView[9];
10
11 // int[] ids = { R.id.image_01, R.id.image_02, R.id.image_03, R.id.image_04,
12 // R.id.image_05, R.id.image_06, R.id.image_07, R.id.image_08,
13 // R.id.image_09 };
14 // int[] imgId = { R.drawable.img01, R.drawable.img02, R.drawable.img03,
15 // R.drawable.img04, R.drawable.img05, R.drawable.img06,
16 // R.drawable.img07, R.drawable.img08, R.drawable.img09 };
17
18 @Override
19 protected void onCreate(Bundle savedInstanceState) {
20 super.onCreate(savedInstanceState);
21 setContentView(R.layout.activity_dialog);
22
23 //使用反射
24 for (int i = 0; i < iv.length; i++) {
25 final int finalI = i+1;
26 String name = "image_0"+finalI;
27 try {
28 //获取其他类
29 Class cls = R.id.class;
30 //获取类的属性,getField(name)获取属性，getInt(null)获取属性对应的值
31 //null代表的是静态变量，非静态变量需要传递对象
32 int id = cls.getField(name).getInt(null);
33 iv[i] = (ImageView) findViewById(id);
34 iv[i].setOnClickListener(new OnClickListener() {
35 @Override
36 public void onClick(View v) {
37
38 //返回数据
39 Intent intent = getIntent();
40 Class cls2 = R.drawable.class;
41 try {
42 //内部类使用外部局部变量，需要final
43 int imgid2 = cls2.getField("img0"+finalI).getInt(null);
44 intent.putExtra("image", imgid2);
45 setResult(RESULT_OK, intent);
46 finish();
47 } catch (Exception e) {
48 e.printStackTrace();
49 }
50 }
51 });
52
53 } catch (Exception e) {
54 e.printStackTrace();
55 }
56 }
57
58 // for (int i = 0; i < iv.length; i++) {
59 // final int finalI = i;
60 // //给每一个ImageView找到id
61 // iv[i] = (ImageView) findViewById(ids[i]);
62 // //设置点击事件监听
63 // iv[i].setOnClickListener(new OnClickListener() {
64 // @Override
65 // public void onClick(View v) {
66 // //返回数据
67 // Intent intent = getIntent();
68 // //内部类使用外部局部变量，需要final
69 // intent.putExtra("image", imgId[finalI]);
70 // setResult(RESULT_OK, intent);
71 // finish();
72 // }
73 // });
74 // }
75 }
76
77 }
最终效果图
时间： 2024-10-15 03:01:16