package com.thenewboston.overflowmenu;
import android.content.Intent;
import android.content.SharedPreferences;
import android.graphics.Color;
import android.os.Handler;
import android.preference.PreferenceManager;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import java.util.Calendar;
public class MainActivity extends ActionBarActivity {
TextView timerTextView;
long startTime = 0;
Handler timerHandler = new Handler();
public Runnable timerRunnable = new Runnable() {
@Override
public void run() {
Calendar current = Calendar.getInstance();
Calendar usertime = Calendar.getInstance();
usertime.set(Calendar.HOUR_OF_DAY, 20);
usertime.set(Calendar.MINUTE, 00);
usertime.set(Calendar.SECOND, 00);
long millis = current.getTimeInMillis();
timerTextview.settext(String.format("%02d:%02d:%02d",
TimeUnit.MILLISECONDS.toHours(millis),
TimeUnit.MILLISECONDS.toMinutes(millis) - TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)),
TimeUnit.MILLISECONDS.toSeconds(millis) - TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis))));
timerTextView.setText(String.valueOf(millis));
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
TextView tdy = (TextView) findViewById(R.id.tdy);
Calendar calendar = Calendar.getInstance();
SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(this);
SharedPreferences.Editor editor = pref.edit();//every change to the preferences must pass through an SharedPreferences.Editor, so call pref.edit() to retrive one;
int count = 0;
int mod;//to keep track of the current day
boolean one = calendar.get(Calendar.HOUR) == 1 && calendar.get(Calendar.AM_PM) == Calendar.PM;
if (calendar.get(Calendar.HOUR) == 3 && calendar.get(Calendar.AM_PM) == Calendar.PM) // if it is at 12 AM in the morning
{
count = pref.getInt("count", 1);
mod = Math.abs(count % 5);
if (mod == 0)
tdy.setText("Biceps ");
else if (mod == 1)
tdy.setText("shoulders ");
else if (mod == 2)
tdy.setText("triceps ");
else if (mod == 3)
tdy.setText("lats ");
else if (mod == 4)
tdy.setText("chest ");
if (this.isFinishing())//check if the user is leaving the app by pressing the back key, if true, we need to store the current count value which is the current day
{
editor.putInt("count", count);
editor.apply(); //need to commit the change to persist it
}
}
}
Thread t = new Thread() {
@Override
public void run() {
try {
while (!isInterrupted()) {
Thread.sleep(1000);
runOnUiThread(new Runnable() {
@Override
public void run() {
timerHandler.postDelayed(timerRunnable, 0);
}
});
}
} catch (InterruptedException e) {
}
}
};
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
RelativeLayout bg = (RelativeLayout) findViewById(R.id.bg);
switch (item.getItemId()) {
case R.id.Red: {
if (item.isChecked()) {
item.setChecked(false);
} else {
item.setChecked(true);
bg.setBackgroundColor(Color.RED);
Toast.makeText(MainActivity.this, "changing color to red", Toast.LENGTH_SHORT).show();
return true;
}
}
case R.id.green: {
if (item.isChecked()) {
item.setChecked(false);
} else {
item.setChecked(true);
bg.setBackgroundColor(Color.GREEN);
Toast.makeText(MainActivity.this, "changing color to green", Toast.LENGTH_SHORT).show();
return true;
}
}
case R.id.yellow: {
if (item.isChecked()) {
item.setChecked(false);
} else {
item.setChecked(true);
bg.setBackgroundColor(Color.YELLOW);
Toast.makeText(MainActivity.this, "Changing color to yellow", Toast.LENGTH_SHORT).show();
return true;
}
}
case R.id.main: {
if (item.isChecked()) {
item.setChecked(false);
} else {
item.setChecked(true);
Intent intent = new Intent(this, MainActivity.class);
bg.setBackgroundColor(Color.BLUE);
startActivity(intent);
Toast.makeText(MainActivity.this, "Main Menu", Toast.LENGTH_SHORT).show();
return true;
}
}
case R.id.setting: {
if (item.isChecked()) {
item.setChecked(false);
} else {
item.setChecked(true);
Intent intent = new Intent(android.provider.Settings.ACTION_SETTINGS);
intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
startActivity(intent);
Toast.makeText(MainActivity.this, "opening settings", Toast.LENGTH_SHORT).show();
return true;
}
}
case R.id.night: {
if (item.isChecked()) {
item.setChecked(false);
} else {
item.setChecked(true);
bg.setBackgroundColor(Color.BLACK);
this.setTheme(R.style.night);
return true;
}
}
case R.id.music: {
if (item.isChecked()) {
item.setChecked(false);
} else {
item.setChecked(true);
bg.setBackgroundColor(Color.WHITE);
Toast.makeText(MainActivity.this, "Opening..", Toast.LENGTH_SHORT).show();
Intent one= getPackageManager().getLaunchIntentForPackage("com.android.music");
startActivity(one);`
return true;
}
}
default:
return super.onOptionsItemSelected(item);
}
}
}
答案 0 :(得分：0)
尝试进行以下更改：
public class MainActivity extends ActionBarActivity {
TextView timerTextView;
要：
public class MainActivity extends ActionBarActivity {
TextView timerTextView = new TextView();
或
TextView timerTextView;
...
@Override
public void run() {
timerTextView = (TextView) findViewById(R.id.timerTextView);
...
}