我怎样才能在Android中使用共享偏好计数器？(how can i use share preference in counter in android?)

对不起，因为我的简单问题3，但我需要你的帮助。我想在我的应用中有一个计数器（使用shared preference ），如下所示：

首先，有2个按钮， START和RESET 。如果单击RESET ，则计数器从0开始。同样，如果START被点击，则计数器从共享偏好数据开始。开始计算最后一次，我想在股票偏好中保存柜台。（但我不知道最好将它保存在BACK btn或CLICK btn中）

我的问题在于共享偏好部分。请帮我，我该怎么做？非常感谢！

编辑：这是我的代码

public class CountActivity extends Activity { private Button click; private int count,savedCount; private String count_text; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.counting); click= (Button) findViewById(R.id.vow_counting); final Typeface typeface = Typeface.createFromAsset(getAssets(),"fonts/Far_Homa.ttf"); final SharedPreferences sharedPreferences=getSharedPreferences("counters", Context.MODE_PRIVATE); final SharedPreferences.Editor editor=sharedPreferences.edit(); AlertDialog.Builder fBuilder=new AlertDialog.Builder(VowCountActivity.this); fBuilder.setMessage("please choose"); fBuilder.setCancelable(false); fBuilder.setPositiveButton("start from beging", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialogInterface, int i) { count = sharedPreferences.getInt("counter", 0); click.setText("0"); click.setTypeface(Typeface.createFromAsset(getAssets(),"fonts/Far_Homa.ttf")); dialogInterface.cancel(); } }); fBuilder.setNegativeButton("countinue", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialogInterface, int i) { count = sharedPreferences.getInt("counter",savedCount); editor.putInt("counter",savedCount).commit(); dialogInterface.cancel(); } }); fBuilder.show(); click.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { count++; count_text=Integer.toString(count); click.setText(count_text); click.setTypeface(typeface); savedCount = sharedPreferences.getInt("savedCounter", count); vibrate(500); } }); } // vibrate public void vibrate(int duration) { Vibrator vibs = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE); vibs.vibrate(duration); }

Excuse me because 3 of my simple question, but I need your help. I want to have a counter (with using shared preference) in my app like this:

At the first, there are 2 buttons, START and RESET. If RESET is clicked, the counter starts from 0. Also if START is clicked, the counter starts from shared preference data. Start counting At last time, I want to save counter in share preference. (but I don't know its better to save it in BACK btn or CLICK btn)

My problem is in share preference part. Please help me how can I do this? Thanks a lot!

Edit: this is my code

public class CountActivity extends Activity { private Button click; private int count,savedCount; private String count_text; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.counting); click= (Button) findViewById(R.id.vow_counting); final Typeface typeface = Typeface.createFromAsset(getAssets(),"fonts/Far_Homa.ttf"); final SharedPreferences sharedPreferences=getSharedPreferences("counters", Context.MODE_PRIVATE); final SharedPreferences.Editor editor=sharedPreferences.edit(); AlertDialog.Builder fBuilder=new AlertDialog.Builder(VowCountActivity.this); fBuilder.setMessage("please choose"); fBuilder.setCancelable(false); fBuilder.setPositiveButton("start from beging", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialogInterface, int i) { count = sharedPreferences.getInt("counter", 0); click.setText("0"); click.setTypeface(Typeface.createFromAsset(getAssets(),"fonts/Far_Homa.ttf")); dialogInterface.cancel(); } }); fBuilder.setNegativeButton("countinue", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialogInterface, int i) { count = sharedPreferences.getInt("counter",savedCount); editor.putInt("counter",savedCount).commit(); dialogInterface.cancel(); } }); fBuilder.show(); click.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { count++; count_text=Integer.toString(count); click.setText(count_text); click.setTypeface(typeface); savedCount = sharedPreferences.getInt("savedCounter", count); vibrate(500); } }); } // vibrate public void vibrate(int duration) { Vibrator vibs = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE); vibs.vibrate(duration); }

最满意答案

你应该使用这个代码，等待你的

public class CountActivity extends Activity { private Button click; private int count,savedCount; private String count_text; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.counting); click= (Button) findViewById(R.id.vow_counting); final Typeface typeface = Typeface.createFromAsset(getAssets(),"fonts/Far_Homa.ttf"); final SharedPreferences sharedPreferences=getSharedPreferences("counters", Context.MODE_PRIVATE); final SharedPreferences.Editor editor=sharedPreferences.edit(); AlertDialog.Builder fBuilder=new AlertDialog.Builder(VowCountActivity.this); fBuilder.setMessage("choose"); fBuilder.setCancelable(false); fBuilder.setPositiveButton(firstا", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialogInterface, int i) { count =0; savedCount=0; click.setText("0"); click.setTypeface(Typeface.createFromAsset(getAssets(),"fonts/Far_Homa.ttf")); dialogInterface.cancel(); } }); fBuilder.setNegativeButton("countinue", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialogInterface, int i) { count = sharedPreferences.getInt("counter",savedCount); count_text=Integer.toString(count); click.setText(count_text); click.setTypeface(Typeface.createFromAsset(getAssets(), "fonts/Far_Homa.ttf")); dialogInterface.cancel(); } }); fBuilder.show(); click.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { count++; savedCount=count; count_text=Integer.toString(count); click.setText(count_text); click.setTypeface(typeface); editor.putInt("counter",savedCount).commit(); savedCount = sharedPreferences.getInt("savedCounter", count); } }); }

you should use this code,istear of yoursL

public class CountActivity extends Activity { private Button click; private int count,savedCount; private String count_text; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.counting); click= (Button) findViewById(R.id.vow_counting); final Typeface typeface = Typeface.createFromAsset(getAssets(),"fonts/Far_Homa.ttf"); final SharedPreferences sharedPreferences=getSharedPreferences("counters", Context.MODE_PRIVATE); final SharedPreferences.Editor editor=sharedPreferences.edit(); AlertDialog.Builder fBuilder=new AlertDialog.Builder(VowCountActivity.this); fBuilder.setMessage("choose"); fBuilder.setCancelable(false); fBuilder.setPositiveButton(firstا", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialogInterface, int i) { count =0; savedCount=0; click.setText("0"); click.setTypeface(Typeface.createFromAsset(getAssets(),"fonts/Far_Homa.ttf")); dialogInterface.cancel(); } }); fBuilder.setNegativeButton("countinue", new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialogInterface, int i) { count = sharedPreferences.getInt("counter",savedCount); count_text=Integer.toString(count); click.setText(count_text); click.setTypeface(Typeface.createFromAsset(getAssets(), "fonts/Far_Homa.ttf")); dialogInterface.cancel(); } }); fBuilder.show(); click.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { count++; savedCount=count; count_text=Integer.toString(count); click.setText(count_text); click.setTypeface(typeface); editor.putInt("counter",savedCount).commit(); savedCount = sharedPreferences.getInt("savedCounter", count); } }); }

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