Android重用不同数据的活动

Question

嗨，我正在开发一个android应用程序，有两个实际上相同的活动，但加载不同的数据。我目前有两个活动有很多重复的代码，我觉得我可以通过只使用一个活动来优化它。

    @Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.right_hearing_test);

    String topHtml = this.getString(R.string.top_content);
    String bottomHtml = this.getString(R.string.bottom_content);

    View infoButton = findViewById(R.id.info_button);
    infoButton.setVisibility(View.VISIBLE);

    TextView titleText = (TextView) findViewById(R.id.title_text);
    titleText.setText(R.string.Hearing_Test);

    mScrollButton = (ScrollView) findViewById(R.id.scroll_view);

    topContent = (WebView) findViewById(R.id.top_content);
    topContent.setBackgroundColor(0);

    bottomContent = (WebView) findViewById(R.id.bottom_content);
    bottomContent.setBackgroundColor(0);

    activityHelper = new ActivityHelper(this);

    topContent.loadUrl("file:///android_asset/html/" + topHtml);
    bottomContent.loadUrl("file:///android_asset/html/" + bottomHtml);

    getScreenSize();
    getMargins();

    setResult(RESULT_OK);
}

    @Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.left_hearing_test);

    View infoButton = findViewById(R.id.info_button);
    infoButton.setVisibility(View.VISIBLE);

    mScrollButton = (ScrollView) findViewById(R.id.scroll_view);

    topContent = (WebView) findViewById(R.id.top_content);
    topContent.setBackgroundColor(0);

    bottomContent = (WebView) findViewById(R.id.bottom_content);
    bottomContent.setBackgroundColor(0);

    String topHtml = this.getString(R.string.switch_file);
    String bottomHtml = this.getString(R.string.bottom_content);

    activityHelper = new ActivityHelper(this);

    topContent.loadUrl("file:///android_asset/html/" + topHtml);
    bottomContent.loadUrl("file:///android_asset/html/" + bottomHtml);

    getScreenSize();
    getMargins();
}

Answer 1

只需保留一个标志来决定选择哪个选项。贝娄会给你一个如何控制它的主意。

您可以控制该标志unisg getStringExtra（）,例如putStringExtra（）。您将从FromActivity类开始您的活动。

FromActivity.java

.......    
Intent i = new Intent(FromActivity.this,YourActivity.class);
i.putExtra("Flag","optionone");
startActivity(i);
.......

或

..
Intent i = new Intent(FromActivity.this,YourActivity.class);
i.putExtra("Flag","optiontwo");
startActivity(i);
...

YourActivity.java

        @Override
        public void onCreate(Bundle savedInstanceState) {

        ......
        ..
        ..
        String flag = String.valueOf(getIntent().getStringExtra("Flag"));

        if(flag.equalsIgnoreCase("optionone")){

            String topHtml = this.getString(R.string.top_content);
            String bottomHtml = this.getString(R.string.bottom_content);

            TextView titleText = (TextView) findViewById(R.id.title_text);
            titleText.setText(R.string.Hearing_Test);


        }else if(flag.equalsIgnoreCase("optiontwo")){
            String topHtml = this.getString(R.string.top_content);
            String bottomHtml = this.getString(R.string.bottom_content);
        }else{
    }
        .....
        ...
        ...
        if(flag.equalsIgnoreCase("optionone")){
            setResult(RESULT_OK);
        }
        ....
}