登陆界面，头像选择，activity之间的值传递！

布局代码如下：

activity_main ：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/center"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="horizontal" >    <LinearLayout android:id="@+id/lin2"         android:layout_height="match_parent"         android:layout_width="wrap_content"         android:layout_weight="1"         android:orientation="vertical">         <ImageView              android:layout_marginTop="90dp"             android:layout_marginLeft="20dp"             android:id="@+id/img"             android:layout_width="100dp"             android:layout_height="100dp"             android:background="@drawable/ic_launcher"/>         <Button android:id="@+id/btn"             android:layout_height="wrap_content"             android:layout_width="wrap_content"             android:text="选择头像"             android:layout_marginLeft="20dp"/>                     </LinearLayout>    <LinearLayout android:id="@+id/lin1"         android:layout_height="match_parent"         android:layout_width="wrap_content"         android:layout_weight="2"         android:orientation="vertical">        <TextView            android:id="@+id/tv1"            android:layout_width="fill_parent"            android:layout_height="wrap_content"            android:text="用户名：" />        <EditText            android:id="@+id/ed1"            android:layout_width="match_parent"            android:layout_height="30dp" />        <TextView            android:id="@+id/tv2"            android:layout_width="fill_parent"            android:layout_height="wrap_content"            android:text="密码：" />        <EditText            android:id="@+id/ed2"            android:layout_width="match_parent"            android:layout_height="30dp"            android:inputType="textPassword" />        <TextView            android:id="@+id/tv3"            android:layout_width="fill_parent"            android:layout_height="wrap_content"            android:text="再次输入密码：" />        <EditText            android:id="@+id/ed3"            android:layout_width="match_parent"            android:layout_height="30dp"            android:inputType="textPassword" />        <TextView            android:id="@+id/tv4"            android:layout_width="fill_parent"            android:layout_height="wrap_content"            android:text="邮箱：" />        <EditText            android:id="@+id/ed4"            android:layout_width="match_parent"            android:layout_height="30dp" />        <Button            android:id="@+id/bt1"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="提交" />    </LinearLayout>    </LinearLayout>

activity_two_main：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/center"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <TextView        android:id="@+id/tv5"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="用户名" />    <TextView        android:id="@+id/tv6"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="密码" />    <TextView        android:id="@+id/tv7"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="邮箱" />    <Button        android:id="@+id/bt2"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="返回上一步" /></LinearLayout>

activity_three_main：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/container"    android:layout_width="match_parent"    android:layout_height="match_parent" >    <GridView        android:id="@+id/grd"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_marginTop="10px"        android:horizontalSpacing="3px"        android:numColumns="4"        android:verticalSpacing="3px" >    </GridView></LinearLayout>

功能代码如下：

MainActivity 文件代码:

package com.example.touxiang;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.ImageView;public class MainActivity extends Activity {private EditText ed1, ed2, ed3, ed4;private Button bt1,btn;private final int CODE = 0x717;protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);ed1 = (EditText) findViewById(R.id.ed1);ed2 = (EditText) findViewById(R.id.ed2);ed3 = (EditText) findViewById(R.id.ed3);ed4 = (EditText) findViewById(R.id.ed4);bt1 = (Button) findViewById(R.id.bt1);btn=(Button) findViewById(R.id.btn);bt1.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubIntent it = new Intent();it.setClass(MainActivity.this, TwoMainActivity.class);// 意图！跳转！Bundle bl = new Bundle();bl.putString("z", ed1.getText().toString());bl.putString("x", ed2.getText().toString());bl.putString("y", ed4.getText().toString());it.putExtras(bl);startActivityForResult(it, CODE);}});btn.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubIntent intent=new Intent(MainActivity.this,ThreeMainActivity.class);startActivityForResult(intent, 0x11);}});}protected void onActivityResult(int requestCode,int resultCode,Intent data){super.onActivityResult(requestCode, resultCode, data);if (requestCode==CODE && resultCode==CODE) {((EditText)findViewById(R.id.ed2)).setText("");((EditText)findViewById(R.id.ed3)).setText("");}if (requestCode==0x11 && resultCode==0x11) {Bundle bundle=data.getExtras();int imageId=bundle.getInt("imageId");ImageView iv=(ImageView) findViewById(R.id.img);iv.setImageResource(imageId);}}}

TwoMainActivity 文件代码：

package com.example.touxiang;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;public class TwoMainActivity extends Activity {protected static final Intent[] MainActivity = null;private Button bt2;private TextView tv5, tv6, tv7;public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_two_main);bt2 = (Button) findViewById(R.id.bt2);tv5 = (TextView) findViewById(R.id.tv5);tv6 = (TextView) findViewById(R.id.tv6);tv7 = (TextView) findViewById(R.id.tv7);Intent it = this.getIntent();Bundle bl1 = it.getExtras();String s1 = bl1.getString("z");String s2 = bl1.getString("x");String s3 = bl1.getString("y");tv5.setText(s1);tv6.setText(s2);tv7.setText(s3);bt2.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {// TODO Auto-generated method stubsetResult(0x717);finish();}});}}

ThreeMainActivity文件代码：

package com.example.touxiang;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.BaseAdapter;import android.widget.GridView;import android.widget.ImageView;public class ThreeMainActivity extends Activity {public int[] imageId = new int[] { R.drawable.wardskin_15,R.drawable.wardskin_16, R.drawable.wardskin_17,R.drawable.wardskin_18, R.drawable.wardskin_19,R.drawable.wardskin_20, R.drawable.wardskin_21,R.drawable.wardskin_22, R.drawable.wardskin_27 };@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_three_main);GridView grd = (GridView) findViewById(R.id.grd);BaseAdapter adapter = new BaseAdapter() {@Overridepublic View getView(int position, View convertView, ViewGroup parent) {// TODO Auto-generated method stubImageView imageView;if (convertView == null) {imageView = new ImageView(ThreeMainActivity.this);imageView.setAdjustViewBounds(true);imageView.setMaxWidth(158);imageView.setMaxHeight(150);imageView.setPadding(5, 5, 5, 5);} else {imageView = (ImageView) convertView;}imageView.setImageResource(imageId[position]);return imageView;}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn imageId.length;}};grd.setAdapter(adapter);grd.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> parent, View view,int position, long id) {// TODO Auto-generated method stubIntent intent = getIntent();Bundle bundle = new Bundle();bundle.putInt("imageId", imageId[position]);intent.putExtras(bundle);setResult(0x11, intent);finish();}});}}