我試圖以LinearLayout編程方式（在循環中）將兩個文本視圖添加到 a 中，然后依次將其添加到LinearLayout布局文件中定義的 a 中。代碼運行時沒有錯誤，并且在評估 getChildCount 時我得到了預期值，但設備上絕對沒有渲染任何內容。XML：<LinearLayout android:id="@+id/llNotes" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginStart="1dp" android:layout_marginLeft="1dp" android:layout_marginEnd="1dp" android:layout_marginRight="1dp" android:layout_marginBottom="@dimen/activity_vertical_margin_quarter" android:background="@drawable/rounded_bottom_corners" android:orientation="vertical" android:paddingTop="@dimen/activity_vertical_margin_half" android:paddingBottom="@dimen/activity_vertical_margin" />爪哇：for (Note MyNote : foo.GetNotes()) { LinearLayout llNoteParent = new LinearLayout(this); TextView tvNoteHeader = new TextView(this); TextView tvNoteValue = new TextView(this); LinearLayout.LayoutParams llParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT); llParams.gravity = Gravity.CENTER_HORIZONTAL; llNoteParent.setLayoutParams(llParams); llNoteParent.setOrientation(LinearLayout.HORIZONTAL); llNoteParent.setBackgroundColor(ContextCompat.getColor(this, R.color.white)); llNoteParent.setPadding(R.dimen.activity_horizontal_margin, R.dimen.activity_vertical_margin_half, R.dimen.activity_horizontal_margin, R.dimen.activity_horizontal_margin); }
2 回答
一只萌萌小番薯
TA貢獻1795條經驗 獲得超7個贊
您無法將帶有 dp 的數字傳遞到 setPadding 方法中
setPadding(R.dimen.activity_horizontal_margin, R.dimen.activity_vertical_margin_half, R.dimen.activity_horizontal_margin, R.dimen.activity_horizontal_margin);
您需要將整數傳遞給 setPadding 方法。
1-嘗試這樣的事情
llNoteParent.setPadding(20,20,20,20);
tvNoteHeader.setPadding(20,20,20,20);
2-或用戶integer.xml
for (Note MyNote : foo.GetNotes()) {
LinearLayout llNoteParent = new LinearLayout(this);
TextView tvNoteHeader = new TextView(this);
TextView tvNoteValue = new TextView(this);
LinearLayout.LayoutParams llParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
llParams.gravity = Gravity.CENTER_HORIZONTAL;
llNoteParent.setLayoutParams(llParams);
llNoteParent.setOrientation(LinearLayout.HORIZONTAL);
llNoteParent.setBackgroundColor(ContextCompat.getColor(this, R.color.white));
llNoteParent.setPadding(R.integer.activity_horizontal_margin, R.integer.activity_vertical_margin_half, R.integer.activity_horizontal_margin, R.integer.activity_horizontal_margin);
LinearLayout.LayoutParams tvNoteHeaderParams = new LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.MATCH_PARENT);
tvNoteHeaderParams.weight = 1;
tvNoteHeader.setLayoutParams(tvNoteHeaderParams);
tvNoteHeader.setPadding(R.integer.activity_vertical_margin_half, R.integer.activity_vertical_margin_half, R.integer.activity_vertical_margin_half, R.integer.activity_vertical_margin_half);
tvNoteHeader.setBackground(getDrawable(R.drawable.left_text_field));
tvNoteHeader.setGravity(Gravity.CENTER);
tvNoteHeader.setText(MyNote.GetAbbreviatedText());
LinearLayout.LayoutParams tvNoteValueParams = new LinearLayout.LayoutParams(0, LinearLayout.LayoutParams.WRAP_CONTENT);
tvNoteValueParams.weight = 1;
tvNoteValue.setLayoutParams(tvNoteValueParams);
tvNoteValue.setPadding(R.integer.activity_vertical_margin_half, R.integer.activity_vertical_margin_half, R.integer.activity_vertical_margin_half, R.integer.activity_vertical_margin_half);
tvNoteValue.setBackground(getDrawable(R.drawable.right_text_field));
tvNoteValue.setText(MyNote.GetText());
llNoteParent.addView(tvNoteHeader);
llNoteParent.addView(tvNoteValue);
llNotes.addView(llNoteParent);
}
注意：將值添加到integer.xml文件的values 中。
慕容3067478
TA貢獻1773條經驗 獲得超3個贊
你必須使用，
float horizontalMargin = getResources() .getDimension(R.dimen.R.dimen.activity_horizontal_margin); float verticleMargin = getResources() .getDimension(R.dimen.R.dimen.activity_vertical_margin_half);
設置填充后，
llNoteParent.setPadding(horizontalMargin,verticleMargin, horizontalMargin, horizontalMargin); tvNoteHeader.setPadding(verticleMargin, verticleMargin, verticleMargin, verticleMargin); tvNoteValue.setPadding(verticleMargin, verticleMargin, verticleMargin, verticleMargin);
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