Question

我正在开发一个Android项目

在MainActivity上创建一个方法，如下所示：

public void diagnose(View View) {

    System.out.println("%%%%%%%%%%%%%%%%% INSIDE DIAGNOSE %%%%%%%%%%%%%%");

    String PTCondition = " ";

    int row, col, count, percentageOfLikelihood, maxPercent = 0;

    //To store the name of each condition and its percentage of likelihood
    String[][] percentPerCondition = new String[8][];

    percentPerCondition[0][0] = "Rotator Cuff Strain";
    percentPerCondition[1][0] = "Coracoid Impingement";
    percentPerCondition[2][0] = "Supraspinatus Impingement";
    percentPerCondition[3][0] = "Bicipital Tendonitis";
    percentPerCondition[4][0] = "Glenohumeral Dislcation";
    percentPerCondition[5][0] = "Clavicular Fracture";
    percentPerCondition[6][0] = "Labral Tear";
    percentPerCondition[7][0] = "SubAcromial Bursitis";

    //Store binary sequence of Special Tests that correspond to the conditions above
    int[][] STValuesPercondition = new int[][] {
        {
            1, 0, 1, 0, 1
        }, {
            0, 1, 0, 1, 1
        }, {
            0, 1, 1, 0, 0
        }, {
            1, 1, 0, 0, 1
        }, {
            0, 0, 1, 1, 1
        }, {
            1, 1, 0, 1, 0
        }, {
            1, 0, 1, 1, 0
        }, {
            0, 1, 1, 1, 0
        }
    };

    //Compare the binary sequence in PTFindings to all conditions
    for (row = 0; row < STValuesPercondition.length; row++) {
        count = 0;
        for (col = 0; col < STValuesPercondition.length; col++) {
            if (STValuesPercondition[row][col] == PTFindings[row]) count++;
        }

        //Calculate percentage of likelihood
        percentageOfLikelihood = (count / 5) * 100;
        if (percentageOfLikelihood > maxPercent) {
            maxPercent = percentageOfLikelihood;
            PTCondition = percentPerCondition[row][0];
        }

        System.out.println("&&&&&&& Inside diagnosis: " + PTCondition);
        //Store percentage as a String in the percentPerCondition 2D array; may need it later
        percentPerCondition[row][1] = Integer.toString(percentageOfLikelihood);
    }

    //Point to the TextView where data to be displayed - in layout file (displaydx)
    DxTextView = (TextView) findViewById(R.id.dx1);

    //Populate the textView with the data from
    DxTextView.setText(PTCondition);

    //Display the PTCondition on the activity
    String passPTCondition = "";

    Intent i = new Intent(getApplicationContext(), DisplayDxActivity.class);
    i.putExtra(passPTCondition, PTCondition);
    startActivity(i);

} //public void diagnose(View View)

这是我的布局文件;看起来这个方法（诊断（View View））没有被调用。我的diagnose（）方法在onCreate（）中定义点击诊断时没有任何反应？ !!!!

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Generate Possible Diagnoses"
    android:id="@+id/SubmitButton"
    android:textColor="#ffff6949"
    android:background="#ffffffff"
    android:textStyle="bold"
    android:onClick="diagnose" />

<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceSmall"
    android:id="@+id/dx1"
    android:layout_gravity="center_horizontal" />

Answer 1

除了视图参数名称中的代码约定错误外，您的代码似乎是正确的。

确保使用onCreate方法夸大布局，并调用diagnose方法。

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.your_main_layout);
    // Where your_main_layout is the one who has the android:onClick="diagnose"
    // Rest of the code...
}

以防万一，说{4}已在API级别4中引入，因此请确保您的API目标符合该目标。

编辑：

作为另一项测试，您可以将android:onClick侦听器添加到您的活动中，并通过View id将所有onClick事件添加到您的MainActivity.java中来获取所有onClick事件：

View.OnClickListener

@Mike已经检测到@Coeus，将public class MainActivity extends Activity implements View.OnClickListener { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.your_main_layout); findViewById(R.id.SubmitButton).setOnClickListener(this); } .... @Override public void onClick(View v) { switch (v.getId()) { case R.id.SubmitButton: diagnose(v); break; default: break; } }方法移出diagnose并使其成为MainActivity类方法。否则，当Android查找使用反射在布局中找到的onCreate方法时，它将找不到任何内容。

我对onClick事件方法的方法没有做任何事情

1 个答案: