TableLayout 中的 TextView 数组

Posted 2023-02-24

【中文标题】TableLayout 中的 TextView 数组

【英文标题】：TextView arrays in TableLayout

【发布时间】：2013-10-13 04:15:10

【问题描述】：

我想做 4 列动态变化的数据行。我会用 LinearLayout 来做到这一点，但我找不到获得一组 4x10 文本视图的好方法。此 .java 引发了一个致命错误，该错误列在底部：

public class DebtList extends Activity 

Integer trigger = 5;
Double totalDebt = 0.00;

@TargetApi(Build.VERSION_CODES.HONEYCOMB)
@Override
protected void onCreate(Bundle savedInstanceState) 
    super.onCreate(savedInstanceState);
    setContentView(R.layout.debtlist);

    //Bundle extras = getIntent().getExtras();

    String[] debtNames = new String[10];
    Double[] debtAmount = new Double[10];
    Double[] debtRate = new Double[10];
    Double[] debtTerm = new Double[10];

    Integer stopper = trigger+1;

    TableLayout tl=(TableLayout)findViewById(R.id.debtlist);
    TableRow tr1 = new TableRow(this);
    TextView textview = new TextView(this);

    for(int i=0; i<stopper; i++)
    

        tr1.setLayoutParams(new LayoutParams( LayoutParams.FILL_PARENT,LayoutParams.WRAP_CONTENT));
        tr1.setId(i);

        textview.setText("" + i);
        tr1.addView(textview);
        tl.addView(tr1, new TableLayout.LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));

        tr1.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT));
        tr1.setId(i);

    

    trigger++;

我有一个（基本上）空白的 .XML 可以使用：

<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/debtlist"
    android:layout_
    android:layout_ >

</TableLayout>

我的 LogCat：

10-13 04:12:07.412: E/AndroidRuntime(799): FATAL EXCEPTION: main
10-13 04:12:07.412: E/AndroidRuntime(799): java.lang.ClassCastException: android.app.ActionBar$LayoutParams cannot be cast to android.widget.LinearLayout$LayoutParams
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.widget.LinearLayout.measureVertical(LinearLayout.java:587)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.widget.TableLayout.measureVertical(TableLayout.java:468)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.widget.TableLayout.onMeasure(TableLayout.java:431)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.view.View.measure(View.java:10828)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.widget.FrameLayout.onMeasure(FrameLayout.java:267)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.view.View.measure(View.java:10828)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.widget.LinearLayout.measureVertical(LinearLayout.java:764)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.widget.LinearLayout.onMeasure(LinearLayout.java:519)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.view.View.measure(View.java:10828)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4351)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.widget.FrameLayout.onMeasure(FrameLayout.java:267)
10-13 04:12:07.412: E/AndroidRuntime(799):  at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:1890)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.view.View.measure(View.java:10828)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.view.ViewRoot.performTraversals(ViewRoot.java:909)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.view.ViewRoot.handleMessage(ViewRoot.java:2003)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.os.Handler.dispatchMessage(Handler.java:99)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.os.Looper.loop(Looper.java:132)
10-13 04:12:07.412: E/AndroidRuntime(799):  at android.app.ActivityThread.main(ActivityThread.java:4025)
10-13 04:12:07.412: E/AndroidRuntime(799):  at java.lang.reflect.Method.invokeNative(Native Method)
10-13 04:12:07.412: E/AndroidRuntime(799):  at java.lang.reflect.Method.invoke(Method.java:491)
10-13 04:12:07.412: E/AndroidRuntime(799):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
10-13 04:12:07.412: E/AndroidRuntime(799):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
10-13 04:12:07.412: E/AndroidRuntime(799):  at dalvik.system.NativeStart.main(Native Method)

如果有人有任何更有效的方法来根据用户输入的数据量显示一组 4X1-10 的 TextView，请告诉我。

我也在使用 API 级别 12

【参考方案1】：

如日志：

ClassCastException: android.app.ActionBar$LayoutParams 不能被强制转换 到 android.widget.LinearLayout$LayoutParams

表示您正在导入 ActionBar.LayoutParams 以将 LayoutParams 设置为 TableLayout 和 Buttons，因此请使用 LinearLayout.LayoutParams 作为：

for(int i=0; i<stopper; i++)
    

     tr1.setLayoutParams(new LinearLayout.LayoutParams( LayoutParams.FILL_PARENT,
                                                     LayoutParams.WRAP_CONTENT));
        //.....
     tr1.setLayoutParams(new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,
                                                    LayoutParams.WRAP_CONTENT)));
     tr1.setId(i);

    

【讨论】：

仍然只有垂直或水平，这取决于我如何设置 LL。

【参考方案2】：

由于您正在使用表格布局并膨胀 ActionBar 线性布局的上下文，因此您会遇到类转换异常。

java.lang.ClassCastException：android.app.ActionBar$LayoutParams 无法转换为 android.widget.LinearLayout$LayoutParams

有没有办法每行 4 列 x 行？

为此使用自定义布局并使用它。

 for(int i=0; i<stopper; i++)
    

       // Inflate your row "template" and fill out the fields.
    TableRow row = (TableRow)LayoutInflater.from(context).inflate(R.layout.attrib_row,  null);
    ((TextView)row.findViewById(R.id.attrib_name)).setText(b.NAME);
    ((TextView)row.findViewById(R.id.attrib_value)).setText(b.VALUE);
    table.addView(row);