我正在尝试从 Android 应用程序上的 Spinner 获取值并将其转换为字符串,以便我可以将其作为 Bundle 中的数据项移至另一个 Activity 。我已经成功地使用 getText().toString(); 方法的组合来移动 EditText 值。我正在寻找相同的结果,但现在使用 Spinner 项目,但到目前为止还没有成功。
代码如下:
当用户在 onClick
方法中选择按钮时调用此方法:
public void commitData(){
Bundle bundle = new Bundle();
bundle.putString("key", txtBuildingName.getText().toString()); //Gets the TEXT that the TEXTVIEW was holding converts it to a String and adds to the Extras bundle
Bundle bundle1 = new Bundle();
bundle1.putString("key1", txtDescription.getText().toString()); // Same again
Bundle bundle2 = new Bundle();
bundle2.putString("key2", type.getItemAtPosition(type.getSelectedItemPosition()).toString());
Bundle bundle3 = new Bundle();
bundle3.putString("key3", project.getItemAtPosition(project.getSelectedItemPosition()).toString());
Intent newIntent = new Intent(this.getApplicationContext(), DataSummary.class);
newIntent.putExtras(bundle);
newIntent.putExtras(bundle1);
startActivityForResult(newIntent, 0);
}
我没有从项目中得到任何结果,并且使用 type.getItemAtPosition().getSelectedItemPosition()).toString(); 键入代码行,项目也是如此。
下面显示的是从输入表单接收并输出此数据的 Activity 的代码。
TextView 结果名称; Text查看结果描述; TextView结果类型; TextView结果项目;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_data_summary);
//Check if there is anything in the 'bundle' and if not produce message - AVOIDS NULLPOINTEREXCEPTION when navigating to Activity
Bundle bundle = this.getIntent().getExtras();
if (bundle != null){
String name = bundle.getString("key");
String description = bundle.getString("key1"); //gets data from DataEntry activity
String type = bundle.getString("key2");
String project = bundle.getString("key3");
resultName=(TextView)findViewById(R.id.resultName); //adds the TextViews to the activity
resultType=(TextView)findViewById(R.id.resultType);
resultDescription=(TextView)findViewById(R.id.resultDesc);
resultProject=(TextView)findViewById(R.id.resultProject);
resultName.setText(name); // Fills the textviews with imported data
resultType.setText(type);
resultDescription.setText(description);
resultProject.setText(project);
}
else
{
Toast.makeText(DataSummary.this,"Received no data yet!", Toast.LENGTH_LONG).show();
}
}
有人知道如何成功地从 Spinner 项目中收集数据吗?
最佳答案
为什么要传递不同的包?我猜,在您的接收 Activity 方面,您只获得了第一个 bundle 。
通过这些编辑尝试您的代码:
public void commitData(){
Bundle bundle = new Bundle();
bundle.putString("key", txtBuildingName.getText().toString()); //Gets the TEXT that the TEXTVIEW was holding converts it to a String and adds to the Extras bundle
bundle.putString("key1", txtDescription.getText().toString()); // Same again
bundle.putString("key2", type.getItemAtPosition(type.getSelectedItemPosition()).toString());
bundle.putString("key3", project.getItemAtPosition(project.getSelectedItemPosition()).toString());
关于java - 将 bundle 中的旋转器项目从一项 Activity 移动到另一项 Activity ,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/12426931/