我的 Android 应用中有一个可用的日历。我的目标是从与我的另一个 Google 帐户关联的日历中向此日历添加事件。我发现为了让应用程序看到事件，我必须公开 Google 日历，这样不仅我的应用程序，而且每个人都可以看到日历。我知道 Google 日历设置正确，因为我可以从中看到 JSON 数据。解析 JSON 数据的 URL 是：http://www.google.com/calendar/feeds/[my other calendar]@gmail.com/public/full. 所以我的问题是如何将这些 JSON 数据解析到我的应用程序中？我想我必须创建一个 JSON 解析类，然后在我的日历活动中引用该 JSON 解析类。这是我的日历类的样子：`
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.GregorianCalendar;
import java.util.Locale;
import android.app.Activity;
import android.graphics.Color;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.GridView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.Button;
import android.content.Intent;
public class Calendar32View extends Activity {
public GregorianCalendar month, itemmonth;// calendar instances.
public Calendar31Adapter adapter;// adapter instance
public Handler handler;// for grabbing some event values for showing the dot
// marker.
public ArrayList<String> items; // container to store calendar items which
// needs showing the event marker
ArrayList<String> event;
LinearLayout rLayout;
ArrayList<String> date;
ArrayList<String> desc;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.cal3_2);
Locale.setDefault(Locale.US);
rLayout = (LinearLayout) findViewById(R.id.text);
month = (GregorianCalendar) GregorianCalendar.getInstance();
itemmonth = (GregorianCalendar) month.clone();
items = new ArrayList<String>();
adapter = new Calendar31Adapter(this, month);
GridView gridview = (GridView) findViewById(R.id.gridview);
gridview.setAdapter(adapter);
handler = new Handler();
// ---
//handler.post(calendarUpdater);//--- adds Events
// ----
TextView title = (TextView) findViewById(R.id.title);
title.setText(android.text.format.DateFormat.format("MMMM yyyy", month));
// --- Previous Month Button
RelativeLayout previous = (RelativeLayout) findViewById(R.id.previous);
previous.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
setPreviousMonth();
refreshCalendar();
}
});
// --- END Previous Month Button
// --- Next Month Button
RelativeLayout next = (RelativeLayout) findViewById(R.id.next);
next.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
setNextMonth();
refreshCalendar();
}
});
// --- END Next Month Button
// --- onClick of date ----
gridview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
// removing the previous view if added
if (((LinearLayout) rLayout).getChildCount() > 0) {
((LinearLayout) rLayout).removeAllViews();
}
}
});
// --- END onClick of date ----
}// --- END onCreate
// ---- METHODS ---
protected void setPreviousMonth() {
if (month.get(GregorianCalendar.MONTH) == month
.getActualMinimum(GregorianCalendar.MONTH)) {
month.set((month.get(GregorianCalendar.YEAR) - 1),
month.getActualMaximum(GregorianCalendar.MONTH), 1);
} else {
month.set(GregorianCalendar.MONTH,
month.get(GregorianCalendar.MONTH) - 1);
}
}// --- end method
protected void setNextMonth() {
if (month.get(GregorianCalendar.MONTH) == month
.getActualMaximum(GregorianCalendar.MONTH)) {
month.set((month.get(GregorianCalendar.YEAR) + 1),
month.getActualMinimum(GregorianCalendar.MONTH), 1);
} else {
month.set(GregorianCalendar.MONTH,
month.get(GregorianCalendar.MONTH) + 1);
}
}// --- END Method
protected void showToast(String string) {
Toast.makeText(this, string, Toast.LENGTH_SHORT).show();
}// --- end method
public void refreshCalendar() {
TextView title = (TextView) findViewById(R.id.title);
adapter.refreshDays();
adapter.notifyDataSetChanged();
title.setText(android.text.format.DateFormat.format("MMMM yyyy", month));
}// --- end method
// --- END METHODS -----
}`
我似乎找不到任何关于如何做到这一点的教程。我的目标是 SDK 8，以便它可以在我的 2.3.4 手机上运行。