我正在尝试克隆Uber Driver应用程序。 我已经讲完了这一部分,在收到客户的请求通知后,该应用程序将提示一个应用程序选择器,供用户选择在用户选择接受客户的请求后,哪个第三方应用程序(例如Google Map或Waze)导航到客户的位置。
public static final int APP_CHOOSER_LOCATION = 101;
acceptBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String uri = "geo:" + locationInfo.getLatitude() + ","
+locationInfo.getLongitude() + "?q=" + locationInfo.getLatitude()
+ "," + locationInfo.getLongitude();
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(uri));
startActivityForResult(intent, APP_CHOOSER_LOCATION);
isBack = true;
}
});
所以问题是我怎么知道用户的导航已经完成?
我当前的解决方案是放置一个指标isBack
。默认情况下,它将为false
。用户单击接受后,isBack
设置为true
。
因此,在onResume函数中,如果isBack
等于true
,它将继续打开另一个活动。
@Override
public void onResume(){
super.onResume();
if(isBack){
// Proceed to open another actvity
isBack = false;
}
}
但是,如果用户单击取消按钮,则此操作无效。
应用选择器屏幕截图
我尝试使用onActivityResult
,但是无论我单击哪个应用,resultCode
始终显示0(或RESULT_CANCELED
)。
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Log.i(TAG, "in onActivityResult ");
Log.i(TAG, "resultCode:: "+resultCode);
if (requestCode == APP_CHOOSER_RESPONSE){
if(resultCode == RESULT_OK){
Log.i(TAG, "user select app ");
if(isBack){
// Proceed to open another activity
isBack = false;
}
}
if(resultCode == RESULT_CANCELED){
Log.i(TAG, "is cancelled by user ");
isBack = false;
}
}
}
我的方法错误吗?还是我错过了代码中的任何内容? 我被困在这里,我不知道如何进行。任何建议表示赞赏。
答案 0 :(得分:0)
经过一番挖掘,我在here中找到了这个答案。
这是我更新的意图代码:
acceptBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// always initialise app_name to be empty whenever the button is clicked
Constant.APP_NAME = "";
// a “share” Intent
Intent mapIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(uri));
// a “receiver” Intent
Intent receiver = new Intent(getApplicationContext(), AppSelectorReceiver.class);
//one PendingIntent
PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, receiver,
PendingIntent.FLAG_UPDATE_CURRENT | PendingIntent.FLAG_ONE_SHOT);
// Set appChooser Intent
Intent chooser = Intent.createChooser(mapIntent, null, pendingIntent.getIntentSender());
startActivity(chooser);
}
});
在onResume函数中,我检查用户是否单击了任何应用程序:
@Override
public void onResume(){
super.onResume();
if(!Constant.APP_NAME.isEmpty()){
Log.i(TAG, "User choose: "+ Constant.APP_NAME);
// Proceed to do something here
}
}
这是我的AppSelectorReceiver类:
public class AppSelectorReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
for (String key : Objects.requireNonNull(intent.getExtras()).keySet()) {
try {
ComponentName componentInfo = (ComponentName) intent.getExtras().get(key);
PackageManager packageManager = context.getPackageManager();
assert componentInfo != null;
String appName = (String) packageManager.getApplicationLabel(packageManager.getApplicationInfo(componentInfo.getPackageName(), PackageManager.GET_META_DATA));
Constant.APP_NAME = appName;
}catch (Exception e) {
e.printStackTrace();
}
}
}
}