我已经创建了一个android工作室项目,其中包含一个直到圣诞节的倒计时。我使用两个图像来创建倒计时计时器的背景和轮廓。我已经使该应用程序看起来不错,我想知道是否有任何办法,以设置为我的手机的背景项目,如果它是可能的,如何做到这一点。下面的代码是我如何设置计时器并给出它的值。我有什么需要改变的吗?
package com.example.holidaycountdown;
import android.app.WallpaperManager;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.Handler;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
public class MainActivity extends AppCompatActivity {
private TextView txtTimerDay, txtTimerHour, txtTimerMinute, txtTimerSecond;
private TextView tvEvent;
private Handler handler;
private Runnable runnable;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txtTimerDay = (TextView) findViewById(R.id.txtTimerDay);
txtTimerHour = (TextView) findViewById(R.id.txtTimerHour);
txtTimerMinute = (TextView) findViewById(R.id.txtTimerMinute);
txtTimerSecond = (TextView) findViewById(R.id.txtTimerSecond);
tvEvent = (TextView) findViewById(R.id.tvhappyevent);
countDownStart();
Button button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
setWallpaper();
}
});
}
private void setWallpaper() {
Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.wallpaper);
WallpaperManager manager = WallpaperManager.getInstance(getApplicationContext());
try{
manager.setBitmap(bitmap);
Toast.makeText(this, "Wallpaper set!", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
Toast.makeText(this, "Error!", Toast.LENGTH_SHORT).show();
}
}
public void countDownStart() {
handler = new Handler();
runnable = new Runnable() {
@Override
public void run() {
handler.postDelayed(this, 1000);
try {
SimpleDateFormat dateFormat = new SimpleDateFormat(
"yyyy-MM-dd");
// Please here set your event date//YYYY-MM-DD
Date futureDate = dateFormat.parse("2020-12-25");
Date currentDate = new Date();
if (!currentDate.after(futureDate)) {
long diff = futureDate.getTime()
- currentDate.getTime();
long days = diff / (24 * 60 * 60 * 1000);
diff -= days * (24 * 60 * 60 * 1000);
long hours = diff / (60 * 60 * 1000);
diff -= hours * (60 * 60 * 1000);
long minutes = diff / (60 * 1000);
diff -= minutes * (60 * 1000);
long seconds = diff / 1000;
txtTimerDay.setText("" + String.format("%02d", days));
txtTimerHour.setText("" + String.format("%02d", hours));
txtTimerMinute.setText(""
+ String.format("%02d", minutes));
txtTimerSecond.setText(""
+ String.format("%02d", seconds));
} else {
tvEvent.setVisibility(View.VISIBLE);
tvEvent.setText("The event started!");
textViewGone();
}
} catch (Exception e) {
e.printStackTrace();
}
}
};
handler.postDelayed(runnable, 1 * 1000);
}
public void textViewGone() {
findViewById(R.id.LinearLayout10).setVisibility(View.GONE);
findViewById(R.id.LinearLayout11).setVisibility(View.GONE);
findViewById(R.id.LinearLayout12).setVisibility(View.GONE);
findViewById(R.id.LinearLayout13).setVisibility(View.GONE);
findViewById(R.id.textView1).setVisibility(View.GONE);
findViewById(R.id.textView2).setVisibility(View.GONE);
}
}
1条答案
按热度按时间js4nwp541#
似乎您需要为您的应用程序创建一个应用程序小部件(应用程序小部件是可以嵌入到其他应用程序(如主屏幕)中并接收定期更新的微型应用程序视图)。
这里有一个有用的教程
谷歌教程