package com.example.ops.testapplication;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
private Button Button1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViews();
}
private void findViews(){
find_Simp(R.id.button1);
}
private void find_Simp(int v){
find(Button1,v);
setPic(Button1);
}
private void find(Button b, int v){
b = (Button) findViewById(v);
}
private void setPic(Button b){
b.setBackgroundResource(R.drawable.pic1_1_1);
}
}
解决方案
40
找到问题所在了
private Button Button1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViews();
}
private void findViews(){
find_Simp(R.id.button1);
}
private void find_Simp(int v){
find(Button1,v);
}
private void find(Button b, int v){
b = (Button) findViewById(v);
b.setBackgroundResource(R.drawable.pic1_1_1);
}
}
这样写就没问题说了你再另一方法里找到的button 和外面的button不是一个 java传值问题
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