Question

我很想开发fororid，我想知道在按下按钮后如何将2D arraylist的内容打印到屏幕上。也没有寻找任何过于复杂的事情。一旦我可以打印数据，那将是辉煌的。我有我的方法，应该打印，高级联赛的固定装置。只是想知道如何打印这些灯具。获取灯具的代码本身很好，它只是我不知道如何打印出来。干杯啦！

//  View Remaining Fixtures
public void ViewFixtures(ArrayList<ArrayList<String>> teamsOrPlayers, ArrayList<ArrayList<String>> fixtures, Integer fixturesPlayedToDate) {

    TextView display = (TextView)findViewById(R.id.ViewRemainingFixturesButton);
    String message = "League is complete";

    if(fixturesPlayedToDate != fixtures.get(0).size()) {

        for(int i = fixturesPlayedToDate; i < fixtures.get(0).size(); i++) {

            int homeTeam = Integer.parseInt(fixtures.get(1).get(i));
            int awayTeam = Integer.parseInt(fixtures.get(2).get(i));
            String homeTeamStr = teamsOrPlayers.get(1).get(homeTeam - 1);
            String awayTeamStr = teamsOrPlayers.get(1).get(awayTeam - 1);

            display.setTex;
            display.setText(awayTeamStr);
        }

    } else {
        display.setText(message);
    }
}

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


    if (savedInstanceState == null) {
        getSupportFragmentManager().beginTransaction()
                .add(R.id.container, new PlaceholderFragment())
                .commit();
    }

}

Answer 1

如果您只想记录LogCat：

private void logInfo() {
    for (ArrayList<String> arrayList : outerArrayList) {
        for (String s: arrayList) {
            Log.d("tag", s);
        }
    }
}

如果你想在屏幕上看到它：

private void displayInfo() {
    StringBuilder stringBuilder = new StringBuilder();
    for (ArrayList<String> arrayList: outerArrayList) {
        for (String s: arrayList) {
            sb.append(s);
            sb.append('\n');
        }
    }
    String yourInfo = stringBuilder.toString();
    yourTextView.setText(yourInfo); // assumes your textEdit is multiline
}

Android - 如何在按下按钮后将2D arraylist打印到屏幕

1 个答案: