Question

概要

三个按钮
根据用户的选择，按钮将变为非活动状态
注意用户多次返回此屏幕
选择后，所选按钮在下次访问屏幕时将处于非活动状态或不可用状态。
如果已选择所有三个按钮（标记为非活动状态），则它们都将再次可用。

我不清楚如何进行此操作。欢迎任何帮助或问题。

这是我的.XML，带有三个按钮的简单相对布局：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context="com.example.android.cc09june.TeamA"
android:onClick="link">

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:text="Team A Offense Selection"
    android:id="@+id/TeamAOffSel"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true" />

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/PandR"
    android:id="@+id/PandRA"
    android:layout_marginTop="32dp"
    android:layout_below="@+id/TeamAOffSel"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:layout_alignParentEnd="true"
    android:onClick="submitPANDR"
    android:nestedScrollingEnabled="false" />

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/MandF"
    android:id="@+id/MandFA"
    android:layout_below="@+id/PandRA"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:onClick="submitMANDF" />

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/SandC"
    android:id="@+id/SandCA"
    android:layout_below="@+id/MandFA"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:layout_alignParentRight="true"
    android:layout_alignParentEnd="true"
    android:onClick="submitSANDC" />

这是我的这个XML和按钮的JAVA类：

public class TeamAOffense extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_team_aoffense);
}

// Button for Pick and Roll, where sharedpreferences assigns offense for use in another activity.
public void submitPANDR (View view) {
    Intent intent = new Intent(this, ExchangeAToB.class);
    startActivity(intent);

    SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE);
    SharedPreferences.Editor editor = pref.edit();
    editor.putString("offense", "Pick and Roll");
    editor.apply();
}

// Button for Move and Flow, where sharedpreferences assigns offense for use in another activity.
public void submitMANDF (View v) {
    Intent intent = new Intent(this, ExchangeAToB.class);
    startActivity(intent);

    SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE);
    SharedPreferences.Editor editor = pref.edit();
    editor.putString("offense", "Move and Flow");
    editor.apply();
}

// Button for Set and Called, where sharedpreferences assigns offense for use in another activity.
public void submitSANDC (View v) {
    Intent intent = new Intent(this, ExchangeAToB.class);
    startActivity(intent);

    SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE);
    SharedPreferences.Editor editor = pref.edit();
    editor.putString("offense", "Set and Called");
    editor.apply();
}

@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_team_aoffense, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

}

这是我的UPDATED代码，基于建议。谢谢！

public class TeamAOffense extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_team_aoffense);

    Button buttonPandr = (Button)findViewById(R.id.PandRA);
    Button buttonMandf = (Button)findViewById(R.id.MandFA);
    Button buttonSandc = (Button)findViewById(R.id.SandCA);

    SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE);

    // Calling string for comparison to enable/disable buttons, note these Strings have been set on a previous activity.
    String pandrASetting = pref.getString("pandrASetting", null);
    String mandfASetting = pref.getString("mandfASetting", null);
    String sandcASetting = pref.getString("sandcASetting", null);

    if(pandrASetting.equals("OFF") && mandfASetting.equals("OFF") && sandcASetting.equals("OFF")) {
        buttonPandr.setEnabled(true);
        buttonMandf.setEnabled(true);
        buttonSandc.setEnabled(true);

        pandrASetting = "ON";
        mandfASetting = "ON";
        sandcASetting = "ON";
    }

    if (pandrASetting.equals("OFF")) {
        buttonPandr.setEnabled(false);
    }

    if(mandfASetting.equals("OFF")) {
        buttonMandf.setEnabled(false);
    }

    if (sandcASetting.equals("OFF")) {
        buttonSandc.setEnabled(false);
    }
}

// Button for Pick and Roll, where sharedpreferences assigns offense for use in another activity.
public void submitPANDR (View view) {
    Intent intent = new Intent(this, ExchangeAToB.class);
    startActivity(intent);

    SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE);
    SharedPreferences.Editor editor = pref.edit();
    editor.putString("offense", "Pick and Roll");
    editor.putString("pandrASetting", "OFF");
    editor.apply();
}

// Button for Move and Flow, where sharedpreferences assigns offense for use in another activity.
public void submitMANDF (View v) {
    Intent intent = new Intent(this, ExchangeAToB.class);
    startActivity(intent);

    SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE);
    SharedPreferences.Editor editor = pref.edit();
    editor.putString("offense", "Move and Flow");
    editor.putString("mandfASetting", "OFF");
    editor.apply();
}

// Button for Set and Called, where sharedpreferences assigns offense for use in another activity.
public void submitSANDC (View v) {
    Intent intent = new Intent(this, ExchangeAToB.class);
    startActivity(intent);

    SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE);
    SharedPreferences.Editor editor = pref.edit();
    editor.putString("offense", "Set and Called");
    editor.putString("sandcASetting", "OFF");
    editor.apply();
}

@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_team_aoffense, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }

    return super.onOptionsItemSelected(item);
}

}

Answer 1

试试这个......

当用户点击按钮时，将按键说1的值与共享偏好中的按键名称一起存储。并获取onTereate activty方法中的值，如果value为1，则禁用该按钮。

    public class TeamAOffense extends ActionBarActivity {
    Button buttonPandr, buttonSandc, buttonMandf;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_team_aoffense);
        buttonPandr = (Button)findViewById(R.id.PandRA);
        buttonMandf = (Button)findViewById(R.id.MandFA);
        buttonSandc = (Button)findViewById(R.id.SandCA);

        SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE);
        String pandr = pref.getString("PANDR", "0");
        String mandf= pref.getString("MANDF", "0");
        String sandc = pref.getString("SANDC", "0");
        if(pandr.equals("1")){
          buttonPandr.setEnabled(false);
        }

        if(mandf.equals("1")){
          buttonMandf.setEnabled(false);
        }

        if(sandc.equals("1")){
          buttonSandc.setEnabled(false);
        }

// code to enable the three buttons again, if all the buttons are disabled.
        if(mandf.equals("1") && panfr.equals("1") && sandc.equals("1")){
           buttonSandc.setEnabled(true);
           buttonSandc.setEnabled(true);
           buttonSandc.setEnabled(true);
           SharedPreferences.Editor editor = pref.edit();
           editor.putString("MANDF", "0");
           editor.putString("PANDR", "0");
           editor.putString("SANDC", "0");
           editor.apply();
        }

    }

    // Button for Pick and Roll, where sharedpreferences assigns offense for use in another activity.
    public void submitPANDR (View view) {
        Intent intent = new Intent(this, ExchangeAToB.class);
        startActivity(intent);

        SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE);
        SharedPreferences.Editor editor = pref.edit();
        editor.putString("offense", "Pick and Roll");
        editor.putString("PANDR", "1");
        editor.apply();
    }

    // Button for Move and Flow, where sharedpreferences assigns offense for use in another activity.
    public void submitMANDF (View v) {
        Intent intent = new Intent(this, ExchangeAToB.class);
        startActivity(intent);

        SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE);
        SharedPreferences.Editor editor = pref.edit();
        editor.putString("offense", "Move and Flow");
        editor.putString("MANDF", "1");
        editor.apply();
    }

    // Button for Set and Called, where sharedpreferences assigns offense for use in another activity.
    public void submitSANDC (View v) {
        Intent intent = new Intent(this, ExchangeAToB.class);
        startActivity(intent);

        SharedPreferences pref = getApplicationContext().getSharedPreferences("MyPref", MODE_PRIVATE);
        SharedPreferences.Editor editor = pref.edit();
        editor.putString("offense", "Set and Called");
        editor.putString("SANDC", "1");
        editor.apply();
    }

    @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_team_aoffense, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

根据用户之前的选择使按钮处于非活动状态的最佳方法是什么？

1 个答案: