你好伙计。如你所见，我有 Activity 、游戏 fragment 、适配器
在我的 Activity 中是 gidView，对于这个 gridview，我创建了包含 8 个项目(按钮)的 ButtonAdapter
我想将 buttonsNamePostion 赋予 gameFragment。
在 ButtonAdapter 中，我得到了按钮名称。因此，当我在 Activity 中时，我有带有 Adapter 按钮的 GridView。我在 Activity 中尝试做类似的事情:
public String setText(){
return gridViewCurrency.getSelectedItemId().toString();
}
然后在GameFragmet中
private void setButtonCurrencyText(){
buttonCurrency.setText(((ActivityCurrency).getContext).setText());
}
但这没有用。
我为此花费了太多时间，我的大脑快要爆炸了。我该怎么做？
问题是。我想从 GridView 获取 ItemName 并且当我单击项目时，我的 fragment 被打开并且在我的 buttonCurrency 上是来自单击项目的文本。请帮助我
我不知道该怎么做。
这是 Activity
公共(public)类 CurrencySelectActivity 扩展 AppCompatActivity {
private final String TAG = this.getClass().getSimpleName();
private GridView gridViewCurrency;
private MainGameFragment mainGameFragment;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_currency_select);
ButterKnife.bind(this);
gridViewCurrency = (GridView) findViewById(R.id.gridview);
configureGridViewCurrencySelect();
}
public void openGameFragment() {
mainGameFragment = new MainGameFragment();
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.activity_currency_select, mainGameFragment, "fragment")
.setTransitionStyle(FragmentTransaction.TRANSIT_FRAGMENT_FADE)
.commit();
}
public void closerGameFragment() {
getSupportFragmentManager()
.beginTransaction()
.hide(mainGameFragment)
.commit();
}
@Override
public void onBackPressed() {
super.onBackPressed();
}
private void configureGridViewCurrencySelect() {
gridViewCurrency.setAdapter(new ButtonAdapter(this));
gridViewCurrency.setNumColumns(4);
gridViewCurrency.setOnItemClickListener(new AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View v,
int position, long id) {
Toast.makeText(getApplicationContext(), position, Toast.LENGTH_SHORT).show();
}
});
}
这里是 ButtonAdapter
public class ButtonAdapter extends BaseAdapter {
private Context mContext;
public ButtonAdapter(Context c) {
mContext = c;
}
public int getCount() {
return buttonsName.length;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
Holder holder;
if (convertView == null) {
holder = new Holder();
convertView = LayoutInflater.from(mContext).inflate(R.layout.row_button, null);
holder.button = (Button) convertView.findViewById(R.id.button);
holder.button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
((CurrencySelectActivity)mContext).openGameFragment();
}
});
convertView.setTag(holder);
} else {
holder = (Holder) convertView.getTag();
}
holder.button.setText(buttonsName[position]);
return convertView;
}
private class Holder {
private Button button;
}
private String[] buttonsName = {"EUR/USD", "GBP/USD", "USD/CHF", "USD/JPY",
"EUR/GBP", "EUR/JPN", "EUR/CHF", "USD/NOK",};
和gameFragment
public class MainGameFragment extends Fragment {
@BindView(R.id.spinner_money)
Spinner spinnerData;
@BindView(R.id.text_profit_ill)
TextView text_profit;
@BindView(R.id.button_cash)
Button btnCashCurrency;
@BindView(R.id.restart_game)
Button restartGame;
@BindView(R.id.butonCurrency)
Button buttonCurrency;
public MainGameFragment() {
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_main_game, container, false);
CandleStickChart mChart = (CandleStickChart) view.findViewById(R.id.chart);
mChart.getDescription().setEnabled(false);
mChart.setMaxVisibleValueCount(40);
mChart.animateX(3000);
XAxis xAxis = mChart.getXAxis();
xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
xAxis.setTextColor(Color.WHITE);
xAxis.setDrawGridLines(false);
YAxis leftAxis = mChart.getAxisLeft();
leftAxis.setLabelCount(8, false);
leftAxis.setDrawGridLines(false);
leftAxis.setDrawAxisLine(true);
leftAxis.setTextColor(Color.WHITE);
// chart.getAxisLeft().setTextColor(...); // left y-axis
// chart.getXAxis().setTextColor(...);
// chart.getLegend().setTextColor(...);
YAxis rightAxis = mChart.getAxisRight();
rightAxis.setEnabled(false);
ArrayList<CandleEntry> yVals1 = new ArrayList<>();
int prog = ((int) (Math.random() * 80));
for (int i = 0; i < prog; i++) {
float val = (float) (Math.random() * 2);
float high = (float) (Math.random() * 1) + 2f;
float low = (float) (Math.random() * 1) + 2f;
float open = (float) (Math.random() * 2) + 1f;
float close = (float) (Math.random() * 2) + 1f;
boolean even = i % 2 == 0;
yVals1.add(new CandleEntry(i, val + high, val - low, even ? val + open : val - open,
even ? val - close : val + close));
String date = String.valueOf(android.text.format.DateFormat.format("yyyy-MM-dd", new java.util.Date()));
CandleDataSet set1 = new CandleDataSet(yVals1, date);
set1.setAxisDependency(YAxis.AxisDependency.LEFT);
set1.setColor(Color.rgb(80, 80, 80));
set1.setShadowColor(Color.DKGRAY);
set1.setShadowWidth(0.7f);
set1.setDecreasingColor(Color.RED);
set1.setDecreasingPaintStyle(Paint.Style.FILL);
set1.setIncreasingColor(Color.GREEN);
set1.setIncreasingPaintStyle(Paint.Style.FILL);
set1.setNeutralColor(Color.BLUE);
set1.setHighlightLineWidth(1f);
set1.setBarSpace(0.2f);
CandleData data = new CandleData(set1);
mChart.setData(data);
mChart.invalidate();
mChart.getLegend().setEnabled(false);
ButterKnife.bind(this, view);
configureSpinnerDataAndLogic();
}
return view;
}
@OnClick({R.id.btn_buy, R.id.btn_sell})
public void onGlobalSearchClicked() {
int cash = Integer.valueOf(btnCashCurrency.getText().toString());
if (cash < 0) {
restartGame.setVisibility(View.VISIBLE);
Toast.makeText(getContext(), "Your cash is on -, u cant play. Please restart game.", Toast.LENGTH_SHORT).show();
} else {
FragmentTransaction ft = getChildFragmentManager().beginTransaction();
ft.addToBackStack(null);
int min = 0;
int max = 2;
Random r = new Random();
int i1 = r.nextInt(max - min + 1) + min;
String text = spinnerData.getSelectedItem().toString();
int temp = Integer.parseInt(text);
int temp2 = temp * 2;
if (i1 == 0 || i1 == 1) {
DialogFragment newFragment = LostDialogFragment.newInstance(1);
String DIALOG_LOST = "LostDialogFragment";
newFragment.show(ft, DIALOG_LOST);
cash -= temp2;
btnCashCurrency.setText(cash + "");
} else {
DialogFragment newFragment = WinDialogFragment.newInstance(1);
String DIALOG_WIN = "WinDialogFragment";
newFragment.show(ft, DIALOG_WIN);
cash += temp2;
btnCashCurrency.setText(cash + "");
}
}
}
@OnClick(R.id.restart_game)
public void restartGame() {
((CurrencySelectActivity) getContext()).onBackPressed();
}
// @OnClick(R.id.button_cash)
// public void openHistoryGames() {
// FragmentTransaction ft = getChildFragmentManager().beginTransaction();
// ft.addToBackStack(null);
// DialogFragment newFragment = GameHistoryFragment.newInstance(1);
// String DIALOG_HISTORY = "HistoryDialogFragment";
// newFragment.show(ft, DIALOG_HISTORY);
// }
private void configureSpinnerDataAndLogic() {
String[] arraySpinner = new String[]{
"50", "100", "150", "200", "250", "300", "500"
};
ArrayAdapter<String> adapter = new ArrayAdapter<>(getContext(),
android.R.layout.simple_spinner_item, arraySpinner);
spinnerData.setAdapter(adapter);
spinnerData.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
String text = spinnerData.getSelectedItem().toString();
int temp = Integer.parseInt(text);
text_profit.setText((temp * 2) + " $ " + "100%");
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
}
}
最佳答案
像这样将位置传递给 Activity 的 openGameFragment 函数:
holder.button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
((CurrencySelectActivity)mContext).openGameFragment(position+1);
}
});
在 openGameFragment 函数中将 bundle 添加到 fragment 对象:
public void openGameFragment(int position) {
mainGameFragment = new MainGameFragment();
Bundle bundle = new Bundle();
bundle.putInt("button_position", position);
mainGameFragment.setArguments(bundle);
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.activity_currency_select, mainGameFragment, "fragment")
.setTransitionStyle(FragmentTransaction.TRANSIT_FRAGMENT_FADE)
.commit();
}
在 MainGameFragment 的 OnCreate 中，从包中检索这些值。
private int buttonPosition;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle bundle = getArguments();
if (bundle != null) {
buttonPosition = getArguments().getInt("button_position", 0);
}
}
您可以以相同的方式将文本传递给 bundle，并相应地使用这些值。
关于android - 如何将文本从 Activity(从 gridView 中选择的项目)发送到 fragment 并将文本发送到按钮，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42225007/