我有以下代码，其中我尝试使用 Intent 检索从我的主要 Activity 发送的数据，并且在下一个 Activity 中我正在扩展一个 fragment 类(这很重要，因为我正在使用第三方库来合并动画图表)。我遇到的问题是我的应用程序运行时没有任何错误，但信息未显示在文本框中。扩展 fragment 类时“SetText”是否有不同的语法？
我创建线路 Activity 的代码( fragment 不允许完整代码:
dateButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dateButton.setText(date.toString());
// Creates an instance of current DateTime which represents the
// current date time.
DateTime dateTime = new DateTime();
DateTimeFormatter fmt = DateTimeFormat.forPattern("E d MMM yyyy" + "\n" + " h:mm a ");
String formattedtime = fmt.print(dateTime);
dateButton.setText(formattedtime);
// Plus some hours, minutes, and seconds to the original DateTime.
DateTimeFormatter fmt2 = DateTimeFormat.forPattern("E d MMM yyyy" + "\n" + " h:mm a ");
DateTime dateTime1 = dateTime.plusHours(timeadded);
String endtimecalc = fmt2.print(dateTime1);
TextView endtime = findViewById(endtimetextView);
endtime.setText(endtimecalc);
String spinnerSelection = String.valueOf(spinner.getSelectedItem());
String spinnerSelection2 = String.valueOf(spinner2.getSelectedItem());
String q = quantity.getText().toString();
String d = duration.getText().toString();
//INSERT DATA TO DATABASE
boolean isInserted = myDb.insertData(
spinnerSelection,
spinnerSelection2,
q,
d,
formattedtime,
endtimecalc);
if (isInserted == true)
Toast.makeText(CreateLine.this, "Data Inserted Successfully", Toast.LENGTH_LONG).show();
else
Toast.makeText(CreateLine.this, "Data not Inserted", Toast.LENGTH_LONG).show();
}
});
nextButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Cursor res = myDb.getAllData();
StringBuffer buffer0 = new StringBuffer();
StringBuffer buffer1 = new StringBuffer();
StringBuffer buffer2 = new StringBuffer();
StringBuffer buffer3 = new StringBuffer();
StringBuffer buffer4 = new StringBuffer();
StringBuffer buffer5 = new StringBuffer();
StringBuffer buffer6 = new StringBuffer();
if ( res != null && res.moveToFirst()) {
do {
buffer0.setLength(0);
buffer1.setLength(0);
buffer2.setLength(0);
buffer3.setLength(0);
buffer4.setLength(0);
buffer5.setLength(0);
buffer6.setLength(0);
String getid = res.getString(0);
String getlt = res.getString(1);
String getpt = res.getString(2);
String getqty = res.getString(3);
String getdur = res.getString(4);
String getst = res.getString(5);
String getet = res.getString(6);
buffer0.append(getid);
buffer1.append(getlt);
buffer2.append(getpt);
buffer3.append(getqty);
buffer4.append(getdur);
buffer5.append(getst);
buffer6.append(getet);
} while (res.moveToNext());
}
Intent TransferData = new Intent(CreateLine.this, LineDetails.class);
Bundle extras = new Bundle();
extras.putString("ID", buffer0.toString());
extras.putString("LineType", buffer1.toString());
extras.putString("PackageType", buffer2.toString());
extras.putString("Quantity", buffer3.toString());
extras.putString("Duration", buffer4.toString());
extras.putString("Starttime",buffer5.toString());
extras.putString("endtime", buffer6.toString());
TransferData.putExtras(extras);
setContentView(R.layout.line_details);
SamplerAdapter samplesAdapter = new SamplerAdapter(getSupportFragmentManager());
ViewPager samplesPager = (ViewPager) findViewById(R.id.samplesPager);
samplesPager.setAdapter(samplesAdapter);
}
});
}
}
我的接收线路详细信息中的代码:
public class LineDetails extends SampleFragment {
final private float[] mTrackBackWidth = {30f, 60f, 30f, 40f, 30f};
final private float[] mTrackWidth = {30f, 30f, 30f, 30f, 30f};
final private boolean[] mClockwise = {true, true, true, false, true};
final private boolean[] mRounded = {true, true, true, true, true};
final private boolean[] mPie = {false, false, false, false, true};
final private int[] mTotalAngle = {360, 360, 320, 260, 360};
final private int[] mRotateAngle = {0, 180, 180, 0, 270};
private int mBackIndex;
private int mSeries1Index;
private int mSeries2Index;
private int mStyleIndex;
SQLiteDatabase db;
DatabaseHelper databaseHelper;
Cursor cursor;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View myInflatedView = inflater.inflate(R.layout.line_details, container, false);
Intent ReceiveData = getActivity().getIntent();
Bundle extras = ReceiveData.getExtras();
String id = extras.getString("ID");
String linetype = extras.getString("LineType");
String packagetype = extras.getString("PackageType");
String Quantity = extras.getString("Quantity");
String Duration = extras.getString("Duration");
String Starttime = extras.getString("Starttime");
String endtime = extras.getString("endtime");
TextView LT = (TextView) myInflatedView.findViewById(R.id.textViewLT);
TextView PT = (TextView) myInflatedView.findViewById(R.id.textViewPT);
TextView QTY = (TextView) myInflatedView.findViewById(R.id.textViewQTY);
TextView DUR = (TextView) myInflatedView.findViewById(R.id.textViewDUR);
TextView ST = (TextView) myInflatedView.findViewById(R.id.textViewST);
TextView ET = (TextView) myInflatedView.findViewById(R.id.textViewET);
LT.setText(linetype);
PT.setText(packagetype);
QTY.setText(Quantity);
DUR.setText(Duration);
ST.setText(Starttime);
ET.setText(endtime);
return myInflatedView;
}
最佳答案
如果您有多个值，请使用 bundle 尝试此技术:
发送 Intent :
Intent intent = new Intent(MainActivity.this, Report_Fragment.class);
Bundle extras = new Bundle();
extras.putFloat("bmi",mybmi);
extras.putFloat("fats",myfat);
extras.putString("weight",myfinalweight);
extras.putString("coments",coments);
intent.putExtras(extras);
startActivity(intent);
在 fragment 中获取 Intent :
Intent intent = getActivity().getIntent();
Bundle extras = intent.getExtras();
Float bmi = extras.getFloat("bmi");
Float fats = extras.getFloat("fats");
String weight=extras.getString("weight");
String coments=extras.getString("coments");
用你的替换我的变量!
关于java - 从 Intent 中检索信息，然后将其设置到 Fragment 内的 TextView - Android，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/46704403/