[英]How can i display programmatically a textview next to a button in a RelativeLayout in Android?
[英]Android - Can I change the reference of a TextView with a button?
我有這個代碼
final String[] instructionsStrings = { "instruction 1",
"instruction 2",
"instruction 3",
"instruction 4"};
final int[] instructionIndex = {0};
ImageButton imageButtonNext = findViewById(R.id.imageButtonNext);
imageButtonNext.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (instructionIndex[0] < 3){
instructionIndex[0]++;
instructions.setText(instructionsStrings[instructionIndex[0]]);
}
}
});
它更改了數組中的文本視圖,但我也有一個 strings.xml 文件,我有這個字符串
<string name="instructions_1">instruction 1</string>
<string name="instructions_2">instruction 2</string>
<string name="instructions_3">instruction 3</string>
<string name="instructions_4">instruction 4</string>
我可以更改對 strings.xml 文件的引用而不是更改文本值嗎?
您應該使用String resources
初始化instructionsStrings()
。
您的最終代碼:
final String[] instructionsStrings = { getString(R.string.instruction_1),
getString(R.string.instruction_2),
getString(R.string.instruction_3),
getString(R.string.instruction_4)};
您可以在文檔中閱讀更多詳細信息
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