怎样在activity之间传递poisearch数据 Android 中Activity之间怎么传递数据库中查询得...
\u5982\u4f55\u5728Android\u5f00\u53d1\u4e2dactivity\u4e4b\u95f4\u6570\u636e\u4f20\u9012android\u5404\u7ec4\u4ef6\u4e4b\u95f4\u53ef\u4ee5\u4f7f\u7528Intent\u6765\u4f20\u9012\u6570\u636e\uff0c \u8fd9\u91cc\u4ee5ActivityA\u5411ActivityB\u4f20\u9012\u6570\u636e\u4e3a\u4f8b
Intent intent = new Intent(context, ActivityB.class);//\u5982\u679ccontext\u4e0a\u4e0b\u6587\u4e0d\u662fActivity\u7684\u8bdd\uff0c \u9700\u8981\u6dfb\u52a0\u4e0b\u9762\u8fd9\u4e2aflag\uff0cif (!(context instanceof Activity)) { intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);}//\u6dfb\u52a0\u8981\u4f20\u9012\u7684\u6570\u636e//\u8fd9\u91cc\u7684key\u5230\u65f6\u5019ActivityB\u4f1a\u7528\u6765\u5f97\u5230value//android\u8981\u6c42\u53ef\u4ee5\u4f20\u9012\u7684\u6570\u636e\u7c7b\u578b\u5305\u62ec\u57fa\u672c\u6570\u636e\u7c7b\u578b\uff0c//\u57fa\u672c\u6570\u636e\u7c7b\u578b\u7684\u6570\u7ec4\uff0cCharSequence,\u4ee5\u53ca\u5b9e\u73b0\u4e86Parcelable\u7684\u5bf9\u8c61//putExtra\u662f\u91cd\u8f7d\u65b9\u6cd5\uff0c \u6839\u636evalue\u7684\u7c7b\u578b\u4f1a\u9002\u5f53\u7684\u6253\u5305\u8fdbintent\u7684Bundle\u5bf9\u8c61\u91ccintent.putExtra(key, value);//\u6216\u5219\u5c06\u6570\u636e\u6253\u5305\u8fdbBundle data\u91cc\uff0c \u7136\u540eintent.putExtras(data);context.startActivity(intent);\u5728ActivityB\u4e2d
public void onCreate(Bundle savedInstanceState) { //\u5f97\u5230\u4f20\u9012\u8fc7\u6765\u7684\u6570\u636e Bundle bundle = getIntent().getExtras(); //\u901a\u8fc7getXXX\u65b9\u6cd5\u6765\u83b7\u53d6key\u5bf9\u5e94\u7684value bundle.getXXX(key);}
\u53ef\u4ee5\u7684\uff0cBundle\u5b83\u53ef\u4ee5\u7528key-value\u7684\u5f62\u5f0f\u5b58\u53d6\u6570\u636e\uff0c\u4f60\u53ef\u4ee5\u628acursor\u4e2d\u7684\u6570\u636e\u5b58\u5165bundle\u4e2d\uff0c\u901a\u8fc7intent\u4f20\u5230\u4e0b\u4e00\u4e2aactivity\u4e2d
先上代码：（一）这是实现跳转的页面
package com.aa;
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;
public class Activity2 extends Activity{
private Button ac02_button1=null;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity2);
ac02_button1 = (Button)findViewById(R.id.ac02_button1);
ac02_button1.setOnClickListener(new ac02_button1Listener());
}
class ac02_button1Listener implements OnClickListener{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent();
intent.setClass(Activity2.this,PoiSearchDemo.class);
Activity2.this.startActivity(intent);
}
}
}
（二）这是要跳转的baidu map activity页面
package com.aa;
import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.EditText;
import android.widget.Toast;
import com.baidu.mapapi.BMapManager;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.search.MKAddrInfo;
import com.baidu.mapapi.search.MKBusLineResult;
import com.baidu.mapapi.search.MKDrivingRouteResult;
import com.baidu.mapapi.search.MKPoiInfo;
import com.baidu.mapapi.search.MKPoiResult;
import com.baidu.mapapi.search.MKSearch;
import com.baidu.mapapi.search.MKSearchListener;
import com.baidu.mapapi.search.MKSuggestionInfo;
import com.baidu.mapapi.search.MKSuggestionResult;
import com.baidu.mapapi.search.MKTransitRouteResult;
import com.baidu.mapapi.search.MKWalkingRouteResult;
/**
* 演示poi搜索功能
*/
public class PoiSearchDemo extends Activity {
private MapView mMapView = null;
private MKSearch mSearch = null; // 搜索模块，也可去掉地图模块独立使用
/**
*
*/
private AutoCompleteTextView keyWorldsView = null;
private ArrayAdapter<String> sugAdapter = null;
private int load_Index;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
DemoApplication app = (DemoApplication)this.getApplication();
if (app.mBMapManager == null) {
app.mBMapManager = new BMapManager(this);
app.mBMapManager.init(DemoApplication.strKey,new DemoApplication.MyGeneralListener());
}
setContentView(R.layout.activity_poisearch);
mMapView = (MapView)findViewById(R.id.bmapView);
mMapView.getController().enableClick(true);
mMapView.getController().setZoom(12);
// 初始化搜索模块，注册搜索事件监听
mSearch = new MKSearch();
mSearch.init(app.mBMapManager, new MKSearchListener(){
//在此处理详情页结果
@Override
public void onGetPoiDetailSearchResult(int type, int error) {
if (error != 0) {
Toast.makeText(PoiSearchDemo.this, "抱歉，未找到结果", Toast.LENGTH_SHORT).show();
}
else {
Toast.makeText(PoiSearchDemo.this, "成功，查看详情页面", Toast.LENGTH_SHORT).show();
}
}
/**
* 在此处理poi搜索结果
*/
public void onGetPoiResult(MKPoiResult res, int type, int error) {
// 错误号可参考MKEvent中的定义
if (error != 0 || res == null) {
Toast.makeText(PoiSearchDemo.this, "抱歉，未找到结果", Toast.LENGTH_LONG).show();
return;
}
// 将地图移动到第一个POI中心点
if (res.getCurrentNumPois() > 0) {
// 将poi结果显示到地图上
MyPoiOverlay poiOverlay = new MyPoiOverlay(PoiSearchDemo.this, mMapView, mSearch);
poiOverlay.setData(res.getAllPoi());
mMapView.getOverlays().clear();
mMapView.getOverlays().add(poiOverlay);
mMapView.refresh();
//当ePoiType为2（公交线路）或4（地铁线路）时， poi坐标为空
for( MKPoiInfo info : res.getAllPoi() ){
if ( info.pt != null ){
mMapView.getController().animateTo(info.pt);
break;
}
}
} else if (res.getCityListNum() > 0) {
//当输入关键字在本市没有找到，但在其他城市找到时，返回包含该关键字信息的城市列表
String strInfo = "在";
for (int i = 0; i < res.getCityListNum(); i++) {
strInfo += res.getCityListInfo(i).city;
strInfo += ",";
}
strInfo += "找到结果";
Toast.makeText(PoiSearchDemo.this, strInfo, Toast.LENGTH_LONG).show();
}
}
public void onGetDrivingRouteResult(MKDrivingRouteResult res,
int error) {
}
public void onGetTransitRouteResult(MKTransitRouteResult res,
int error) {
}
public void onGetWalkingRouteResult(MKWalkingRouteResult res,
int error) {
}
public void onGetAddrResult(MKAddrInfo res, int error) {
}
public void onGetBusDetailResult(MKBusLineResult result, int iError) {
}
/**
* 更新建议列表
*/
@Override
public void onGetSuggestionResult(MKSuggestionResult res, int arg1) {
if ( res == null || res.getAllSuggestions() == null){
return ;
}
sugAdapter.clear();
for ( MKSuggestionInfo info : res.getAllSuggestions()){
if ( info.key != null)
sugAdapter.add(info.key);
}
sugAdapter.notifyDataSetChanged();
}
});
keyWorldsView = (AutoCompleteTextView) findViewById(R.id.searchkey);
sugAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line);
keyWorldsView.setAdapter(sugAdapter);
/**
* 当输入关键字变化时，动态更新建议列表
*/
keyWorldsView.addTextChangedListener(new TextWatcher(){
@Override
public void afterTextChanged(Editable arg0) {
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1,
int arg2, int arg3) {
}
@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2,
int arg3) {
if ( cs.length() <=0 ){
return ;
}
String city = ((EditText)findViewById(R.id.city)).getText().toString();
/**
* 使用建议搜索服务获取建议列表，结果在onSuggestionResult()中更新
*/
mSearch.suggestionSearch(cs.toString(), city);
}
});
}
@Override
protected void onPause() {
mMapView.onPause();
super.onPause();
}
@Override
protected void onResume() {
mMapView.onResume();
super.onResume();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mMapView.onSaveInstanceState(outState);
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
mMapView.onRestoreInstanceState(savedInstanceState);
}
private void initMapView() {
mMapView.setLongClickable(true);
mMapView.getController().setZoom(14);
mMapView.getController().enableClick(true);
mMapView.setBuiltInZoomControls(true);
}
/**
* 影响搜索按钮点击事件
* @param v
*/
public void searchButtonProcess(View v) {
EditText editCity = (EditText)findViewById(R.id.city);
EditText editSearchKey = (EditText)findViewById(R.id.searchkey);
mSearch.poiSearchInCity(editCity.getText().toString(),
editSearchKey.getText().toString());
}
public void goToNextPage(View v) {
//搜索下一组poi
int flag = mSearch.goToPoiPage(++load_Index);
if (flag != 0) {
Toast.makeText(PoiSearchDemo.this, "先搜索开始，然后再搜索下一组数据", Toast.LENGTH_SHORT).show();
}
}
}
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