android – DatePickerDialog
作者：互联网
我想在Android documentation中找到简单的DatePickerDialog工作代码
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TextView;
import java.util.Calendar;
public class DatePickerDialogExample extends Activity {
private TextView mDateDisplay;
private Button mPickDate;
private int mYear;
private int mMonth;
private int mDay;
static final int DATE_DIALOG_ID = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mDateDisplay = (TextView) findViewById(R.id.dateDisplay);
mPickDate = (Button) findViewById(R.id.pickDate);
mPickDate.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
showDialog(DATE_DIALOG_ID);
}
});
final Calendar c = Calendar.getInstance();
mYear = c.get(Calendar.YEAR);
mMonth = c.get(Calendar.MONTH);
mDay = c.get(Calendar.DAY_OF_MONTH);
updateDisplay();
}
private void updateDisplay() {
mDateDisplay.setText(
new StringBuilder()
.append(mMonth + 1).append("-")
.append(mDay).append("-")
.append(mYear).append(" "));
}
private DatePickerDialog.OnDateSetListener mDateSetListener =
new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) {
mYear = year;
mMonth = monthOfYear;
mDay = dayOfMonth;
updateDisplay();
}
};
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case DATE_DIALOG_ID:
return new DatePickerDialog(this, mDateSetListener, mYear, mMonth,
mDay);
}
return null;
}
}但是我遇到了奇怪的错误
02-09 15:37:26.491: ERROR/AndroidRuntime(10174): FATAL EXCEPTION: main
android.view.InflateException: Binary XML file line #48: Error inflating class android.widget.ImageView
at android.view.LayoutInflater.createView(LayoutInflater.java:518)
at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:626)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:626)
at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207)
at com.android.internal.app.AlertController.installContent(AlertController.java:205)
at android.app.AlertDialog.onCreate(AlertDialog.java:251)
at android.app.Dialog.dispatchOnCreate(Dialog.java:307)
at android.app.Activity.createDialog(Activity.java:886)
at android.app.Activity.showDialog(Activity.java:2557)
at android.app.Activity.showDialog(Activity.java:2524)
at uk.co.peterscrorner.DatePickerDialogExample$1.onClick(DatePickerDialogExample.java:33)
at android.view.View.performClick(View.java:2485)
at android.view.View$PerformClick.run(View.java:9080)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:3683)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.constructNative(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:415)
at android.view.LayoutInflater.createView(LayoutInflater.java:505)
... 27 more
Caused by: android.content.res.Resources$NotFoundException: File res/drawable-mdpi/ic_dialog_info.png from drawable resource ID #0x108009b
at android.content.res.Resources.loadDrawable(Resources.java:1714)
at android.content.res.TypedArray.getDrawable(TypedArray.java:601)
at android.widget.ImageView.(ImageView.java:118)
at android.widget.ImageView.(ImageView.java:108)
... 30 more
Caused by: java.io.FileNotFoundException: res/drawable-mdpi/ic_dialog_info.png
at android.content.res.AssetManager.openNonAssetNative(Native Method)
at android.content.res.AssetManager.openNonAsset(AssetManager.java:406)
at android.content.res.Resources.loadDrawable(Resources.java:1706)
... 33 more
解决方法:
在XML中添加TextView和Button
<TextView
android:id="@+id/searchText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" />
<Button
android:id="@+id/search"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Search" />
在java文件中添加以下代码
public class DatePickerDialogExample extends Activity {
TextView txtDate;
private int mYear, mMonth, mDay, mHour, mMinute;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
txtDate = (TextView) findViewById(R.id.searchText);
Button search = (Button) findViewById(R.id.search);
search.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Process to get Current Date
final Calendar c = Calendar.getInstance();
mYear = c.get(Calendar.YEAR);
mMonth = c.get(Calendar.MONTH);
mDay = c.get(Calendar.DAY_OF_MONTH);
// Launch Date Picker Dialog
DatePickerDialog dpd = new DatePickerDialog(PrayTimeActivity.this,
new DatePickerDialog.OnDateSetListener() {
@Override
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) {
// Display Selected date in textbox
txtDate.setText(dayOfMonth + "-"
+ (monthOfYear + 1) + "-" + year);
}
}, mYear, mMonth, mDay);
dpd.show();
}
});
}
}
标签：datepickerdialog,android 来源： https://codeday.me/bug/20190729/1573946.html