将varbble从一个活动传递到另一个活动，并在按钮点击时显示 [英] Pass variabble from one activity to another and show on button click

问题描述

我想要做的是结果中的得分变量必须传递给得分活动，以便在用户点击主要活动中的得分按钮时显示测验的得分。有人可以帮助我使用代码，因为我试过两天的所有东西都不起作用。



MainActivity

What I want to do is The score variable in result must be passed on to the scores activity to show the score for the quiz when a person clicks on the scores button in the main activity. Can someone help me with the code because everything I have tried for two days do not work.

MainActivity

package app.mobiledevicesecurity;

import android.content.Intent;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity {
    DatabaseHelper myDb;
    private static Button readbtn;
    private static Button quizbtn;
    private static Button scoresbtn;
    private static Button settingsbtn;
    private static Button helpbtn;
    @Override

        protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        myDb = new DatabaseHelper(this);
        myDb.insertData();

         OnClickReadButtonListener();
         OnClickQuizButtonListener();
         OnClickScoresButtonListener();
         OnClickSettingsButtonListener();
         OnClickHelpButtonListener();
    }

    public void OnClickReadButtonListener() {
        readbtn = (Button) findViewById(R.id.readbutton);
        readbtn.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Intent intent = new Intent("app.mobiledevicesecurity.Read_Category");
                        startActivity(intent);
                    }
                }
        );
    }

    public void OnClickQuizButtonListener() {
        quizbtn = (Button) findViewById(R.id.quizbutton);
        quizbtn.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Intent intent = new Intent("app.mobiledevicesecurity.Quiz");
                        startActivity(intent);
                    }
                }
        );
    }

    public void OnClickScoresButtonListener() {
        scoresbtn = (Button) findViewById(R.id.scoresbutton);
        scoresbtn.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Intent intent = new Intent("app.mobiledevicesecurity.Scores");
                        startActivity(intent);
                    }
                }
        );

    }

    public void OnClickSettingsButtonListener() {
        settingsbtn = (Button) findViewById(R.id.settingsbutton);
        settingsbtn.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Intent intent = new Intent("app.mobiledevicesecurity.Settings");
                        startActivity(intent);
                    }
                }
        );
    }

    public void OnClickHelpButtonListener() {
        helpbtn = (Button) findViewById(R.id.helpbutton);
        helpbtn.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Intent intent = new Intent("app.mobiledevicesecurity.Help");
                        startActivity(intent);
                    }
                }
        );
    }

    @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) {
        // 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);
    }
}

结果

Result

package app.mobiledevicesecurity;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class Result extends Activity {

    private static Button playbtn;
    private static Button menubutton;
    int score;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_result);
        OnClickPlayButtonListener();
        OnClickMenuButtonListener();
        TextView textResult = (TextView) findViewById(R.id.textResult);
        Bundle b = getIntent().getExtras();
        score = b.getInt("score");
        textResult.setText("You scored" + " " + score + " for the quiz.");




    }

    public void OnClickPlayButtonListener() {
        playbtn = (Button) findViewById(R.id.btn);
        playbtn.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Intent intent = new Intent("app.mobiledevicesecurity.Quiz");
                        startActivity(intent);
                    }
                }
        );
    }

    public void OnClickMenuButtonListener() {
        menubutton = (Button) findViewById(R.id.menubtn);
        menubutton.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Intent intent = new Intent(getApplicationContext(), MainActivity.class);
                        startActivity(intent);
                    }
                }
        );
    }
}

分数

Scores

package app.mobiledevicesecurity;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;
import android.content.Intent;

public class Scores extends ActionBarActivity {

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

        TextView txtScore1 = (TextView) findViewById(R.id.txtScore1);         
        txtScore1.setText("Last quiz score:" + " " + "" + ".");
        }

    @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_scores, 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);
    }
}

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