Acitivity 带返回值的 传递 示例
从电话列表中选中号码，然后跳转到拨号界面。
先写主布局文件：
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:inputType="phone"
android:ems="10"
android:hint="请输入电话号码"
android:id="@+id/editText_phoneNumber"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true"
android:layout_alignParentEnd="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="选择联系人"
android:onClick="selectClick"
android:id="@+id/button5_select"
android:layout_below="@+id/editText_phoneNumber"
android:layout_alignParentEnd="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="拨打电话"
android:onClick="callClick"
android:id="@+id/button6_call"
android:layout_below="@+id/button5_select"
android:layout_centerHorizontal="true" />
</RelativeLayout>
再写 电话号码列表 布局文件
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:entries="@array/phoneNumbers"
android:id="@+id/listView_phoneNumbers"/>
</RelativeLayout>
给电话号码列表 添加内容， 在res/layout/strings.xml中
<stringname="app_name">31_Activity</string>
<string-array name="phoneNumbers">
<item>13545678934</item>
<item>18287654343</item>
<item>13423432433</item>
<item>18765467544</item>
<item>13654324355</item>
<item>135523456755</item>
</string-array>
</resources>
主要Activity中java代码：
public class CallPhoneActivity extendsAppCompatActivity {
private static final int REQUEST_CODE_SELECT = 0X1;
private EditText editText_select;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_call_phone);
editText_select = (EditText) findViewById(R.id.editText_phoneNumber);
}
//选择联系人
public void selectClick(View view){
Intent intent = new Intent(this,PhoneListActivity.class);
startActivityForResult(intent,REQUEST_CODE_SELECT);
}
//打电话
public void callClick(View view){
String phoneNumber = editText_select.getText().toString();
if(TextUtils.isEmpty(phoneNumber)){
return;
}
//调用系统的拨号界面
Intent intent = new Intent();
intent.setAction(Intent.ACTION_DIAL);
intent.setData(Uri.parse("tel:"+phoneNumber));
startActivity(intent);
}
/**
* 上一个Activity返回结果集时会被调用
* @param requestCode
* @param resultCode
* @param data
*/
@Override
protected void onActivityResult(int requestCode, int resultCode, Intentdata) {
super.onActivityResult(requestCode, resultCode, data);
switch (resultCode){
case RESULT_OK:
if(requestCode==REQUEST_CODE_SELECT){
String phoneNumber =data.getStringExtra("phoneNumber");
editText_select.setText(phoneNumber);
}
break;
}
}
}
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另一个Activity中 java代码：
单击列表项后把当前选择的列表项内容设置到返回的结果集中，关闭当前Activity
public class PhoneListActivity extendsAppCompatActivity {
private ListView listView_phoneNumbers;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_phone_list);
listView_phoneNumbers = (ListView)findViewById(R.id.listView_phoneNumbers);
/**
* 单击列表项后把当前选择的列表项内容设置到返回的结果集中，关闭当前Activity
*/
listView_phoneNumbers.setOnItemClickListener(newAdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, intposition, long id) {
TextView tv = (TextView)view;
String phoneNumber =tv.getText().toString();
Intent intent = getIntent();
intent.putExtra("phoneNumber",phoneNumber);//把数据存到intent中
setResult(RESULT_OK,intent);//把intent设置到返回的结果集中
finish();
}
});
}
}
